СПОСОБ ОБЕСПЕЧЕНИЯ ИСКУССТВЕННОГО ОХЛАЖДЕНИЯ

Изобретение относится к системам охлаждения теплоизолированных камер. Способ охлаждения теплоизолированной камеры производится посредством парокомпрессионной холодильной машины с многокомпонентным холодильным агентом. При этом получение искусственного холода осуществляется в широком диапазоне от температуры окружающей среды до низких температур. Использование изобретения позволит обеспечить охлаждение камеры до низких температур. 9 з.п. ф-лы, 5 ил.

РАБОЧАЯ ЖИДКОСТЬ ДЛЯ ТЕПЛОВОГО ЦИКЛА, КОМПОЗИЦИЯ ДЛЯ СИСТЕМЫ ТЕПЛОВОГО ЦИКЛА И СИСТЕМА ТЕПЛОВОГО ЦИКЛА

Изобретение обеспечивает рабочую текучую среду теплового цикла, имеющую низкий потенциал глобального потепления, которая может заменить R410A, композицию для системы теплового цикла, включающую рабочую текучую среду, и систему теплового цикла, использующую данную композицию. Описана рабочая текучая среда для теплового цикла, которая содержит трифторэтилен и 2,3,3,3-тетрафторпропилен, где общая доля трифторэтилена и 2,3,3,3- тетрафторпропилена в расчете на общее количество рабочей текучей среды составляет от 70 масс.% до 100 масс. %, а доля трифторэтилена в расчете на общее количество трифторэтилена и 2,3,3,3-тетрафторпропилен составляет от 35 масс.% до 95 масс. %. Также описаны композиция для системы теплового цикла и система теплового цикла. Технический результат: предложена рабочая текучая среда для теплового цикла с хорошими эксплуатационными характеристиками при одновременном подавлении влияния на глобальное потепление. 3 н. и 12 з.п. ф-лы, 8 ил., 12 табл.

КОМПОЗИЦИЯ И СОДЕРЖАЩИЕ ЕЕ ТЕПЛОНОСИТЕЛЬ, ХЛАДАГЕНТ, ПЕНООБРАЗОВАТЕЛЬ И РАСПЫЛЯЕМАЯ КОМПОЗИЦИЯ

Изобретение относится к близкой к азеотропной композиции, применимой, в частности, в качестве хладагента, пропеллента, пенообразователя и теплоносителя, содержащей транс-1,3,3,3-пентафторпропан (TpaнcHFO-1234ze) и соединение, которое выбирают из группы, состоящей из 1,1-дифторэтана («HFC-152a»), 1,1,1,2,3,3,3-гептафторпропана («CHFC-227ea»), 1,1,1,2-тетрафторэтана («HFC-134a»), 1,1,1,2,2-пентафторэтана («HFC-125»). Изобретение также относится к способам применения близкой к азеотропной композиции. Технический результат - композиции с низким потенциалом в истощении озонового слоя. 16 н. и 37 з.п. ф-лы, 4 табл.

ТЕПЛОПЕРЕДАЮЩИЕ КОМПОЗИЦИИ, СОДЕРЖАЩИЕ ФТОРАЛКЕНЫ, И СПОСОБ ПЕРЕДАЧИ ТЕПЛА

Изобретение относится к теплопередающим композициям для использования в системах кондиционирования воздуха, включающим, по меньшей мере, один фторалкен формулы II: ! ! где каждый из R независимо означает Cl, F, Br, I или Н; R' означает (СR2)nY; Y означает СF3; и n равно 0 или 1, и где, по меньшей мере, один R у ненасыщенного концевого углерода не является F; и, по меньшей мере, один адьювант. Причем названный фторалкен имеет потенциал глобального потепления (ПГП) не более чем приблизительно 150, количество фторалкена формулы II составляет не менее 50% от веса композиции. Адьювант выбран из группы, состоящей из смазочных материалов, агентов совместимости, поверхностно-активных веществ, солюбилизирующих агентов или комбинации двух или более этих адьювантов. Также изобретение относится к способу передачи тепла к или от воздуха, включающему принудительный фазовый переход у фторалкена формулы II в теплопередающей композиции. Технический результат - снижение термодинамического кпд хладагента ...

ОХЛАЖДАЮЩАЯ КОМПОЗИЦИЯ, ВКЛЮЧАЮЩАЯ ДИФТОРМЕТАН (HFC32) B 2,3,3,3- ТЕТРАФТОРПРОПИЛЕН (HFO1234YF)

Изобретение относится к охлаждающей композиции для применения в холодильной установке, обеспеченной мерой противодействия для предотвращения тепловых потерь вследствие температурного скольжения в теплообменнике. Охлаждающая композиция включает от 30 до 50 масс.% дифторметана (HFC32) и от 70 до 50 масс.% 2,3,3,3-тетрафторпропилена (HFO1234yf). Композиция дополнительно может включать ингибитор полимеризации, стабилизатор, фреон. Охлаждающая композиция имеет низкое значение GWP (прямое воздействие на глобальное потепление является низким) и хорошую энергоэффективность (косвенное воздействие на глобальное потепление является низким). 7 з.п. ф-лы, 1 табл., 1 пр.

Энергохолодильная система для режима полной изоляции специального фортификационного сооружения

Изобретение относится к области теплоэнергетики и может быть использовано в качестве энергохолодильной системы для объектов, функционирующих без связи с атмосферой, например для специальных фортификационных сооружений (СФС). Энергохолодильная система содержит автономную электростанцию, включающую в себя двигатель и электрогенератор, холодильную машину, емкость с горючим, емкость с окислителем, хранилище холодной технической воды, хранилище нагретой технической воды. Система снабжена смесевой емкостью для хранения утепленной воды, емкостью для хранения сухого нейтрализующего вещества, соединенной с емкостью-дозатором для приготовления водного нейтрализующего раствора, контактным теплообменником для очистки отработанных газов двигателя, линией слива химически грязного водного нейтрализующего раствора с циркуляционным насосом из контактного теплообменника в хранилище химически грязного водного нейтрализующего раствора, в качестве которого используется хранилище нагретой технической воды, а ...

СПОСОБ КРИОГЕННОГО ФРАКЦИОНИРОВАНИЯ С САМООХЛАЖДЕНИЕМ И ОЧИСТКИ ГАЗА И ТЕПЛООБМЕННИК ДЛЯ ОСУЩЕСТВЛЕНИЯ ЭТОГО СПОСОБА

Способ предназначен для криогенного фракционирования (при самоохлаждении) и очистки и совместно с теплообменником для его осуществления относится к холодильной технике. Газовый поток обрабатывают в теплообменнике, образующем единый узел: он частично конденсируется при охлаждении в контурах С1 и С5, несконденсировавшуюся газовую фазу нагревают в контуре С2. Необходимый холод получают от конденсатов, которые после переохлаждения в контуре С3 и дросселирования через клапан V1 испаряются в контуре С4. Процесс может осуществляться в теплообменнике, состоящем из множества каналов в каждом контуре. Способ позволяет эффективно очищать газовый поток из нескольких конденсируемых компонентов при охлаждении. 2 с. и 8 з.п. ф-лы, 2 ил., 8 табл.

КОНДИЦИОНЕР ВОЗДУХА

Настоящее изобретение относится к кондиционеру воздуха. Кондиционер воздуха включает в себя: контур (70) хладагента, содержащий компрессор (1), конденсатор (5), расширительный клапан (4) и испаритель (3) и выполненный с возможностью циркуляции хладагента; датчик (21) температуры всасывания, выполненный с возможностью измерения температуры всасывания хладагента, всасываемого в компрессор (1); и датчик (11) температуры наружного воздуха, выполненный с возможностью измерения температуры наружного воздуха. Хладагент включает по меньшей мере один из R290 и R1270. В режиме обогрева, когда величина, полученная посредством вычитания температуры наружного воздуха из температуры всасывания, меньше -2,0°С, степень открытия расширительного клапана (4) уменьшенная; а когда упомянутая величина больше +0,6°С, степень открытия расширительного клапана (4) увеличенная. Технический результат заключается в создании кондиционера воздуха, в котором можно использовать в качестве хладагента НС хладагент с низким ...

УСТРОЙСТВО ХОЛОДИЛЬНОГО ЦИКЛА

Изобретение относится к холодильной технике. Устройство для осуществления холодильного цикла включает первый клапан переключения потока, включающий первое-четвертое отверстия, второй клапан переключения потока и третий клапан переключения потока, включающие пятое-седьмое отверстия, компрессор, выпускное отверстие которого соединено с первым отверстием, первую трубу высокого давления, обеспечивающую соединение между выпускной трубой и пятыми отверстиями, перепускной расширительный клапан, расположенный на участке первой трубы высокого давления, первый наружный теплообменник, соединенный с седьмым отверстием второго клапана переключения потока, второй наружный теплообменник, соединенный с седьмым отверстием третьего клапана переключения потока, и контроллер. Контроллер выполнен с возможностью осуществления процесса гарантирования дифференциального давления при переключении второго клапана переключения потока или третьего клапана переключения потока. Контроллер выполнен так, чтобы устанавливать ...

Устройство поддержания температурного режима потребителя и способ его работы

Изобретение относится к теплотехнике, а именно к системам регулирования теплового режима различных установок. Устройство поддержания температурного режима потребителя содержит первый и второй контуры циркуляции охлаждающей жидкости и контур холодильной машины. Первый контур циркуляции включает насос (1), жидкостно-воздушный теплообменник (4) с одним вентилятором (7), датчики температуры (9, 10), запорные элементы (5, 6). Второй контур циркуляции включает насос (11). Контур холодильной машины включает компрессор (8), конденсатор (12), дроссель (13) и испаритель (2). Испаритель (2) является общим элементом для контура холодильной машины и первого контура, конденсатор (12) - для контура холодильной машины и второго контура, а теплообменник (4) - для первого и второго контуров. Насос (1) первого контура соединен с потребителем (3) через испаритель (2) и нагреватель (14), установленные таким образом, что выход испарителя (2) соединен со входом нагревателя (14), а выход нагревателя (14) соединен ...

Холодильная машина и способ её работы

Изобретение относится к области холодильной техники, а именно, к компрессионным холодильным машинам машины с нереверсивным циклом и способам их работы. Холодильная машина содержит охлаждаемый компрессор и связанный с потребителем теплообменник, объединённые в единый замкнутый холодильный цикл. Внутренняя полость теплообменника соединена с камерой всасывания компрессора. Камера нагнетания компрессора оснащена газораспределительным устройством нагнетания принудительного действия и соединена трубопроводом непосредственно с внутренней полостью указанного теплообменника. Способ работы холодильной машины заключается в передаче посредством теплообменника тепла от потребителя к хладагенту, всасывании паров хладагента в компрессор, сжатии хладагента в компрессоре с одновременным отводом образованного тепла, расширении сжатого хладагента и его последующем направлении к указанному теплообменнику. Расширение хладагента осуществляют путём его выхлопа через газораспределительное устройство нагнетания ...

Сооружение с автоматизированной системой управления контроля потока и температурного режима технической воды

Изобретение относится к области эксплуатации систем жизнеобеспечения с использованием специализированных устройств вычислительной техники. Технический результат заключается в обеспечении функциональной возможности регулирования потока и температуры технической воды, а также обеспечении функциональной возможности вывода получаемой информации о показателях потока и температуры технической воды персоналу сооружения. Сооружение с автоматизированной системой управления контроля потока и температурного режима технической воды, расположенное под землей и предназначенное для работы без связи с атмосферным воздухом. Технический результат достигается благодаря тому, что сооружение оснащено автоматизированной системой управления контроля потока и температурного режима технической воды, которая, в свою очередь, поделена на 6 участков, каждый из участков оборудован датчиками протечки воды, накладными преобразователями температуры, аппаратами получения данных и аппаратами генерации отчетов, причем первым ...

Холодильная установка рефрижераторного контейнера

Устройство относится к холодильной технике и может быть использовано для обеспечения необходимого температурного режима в грузовом объеме рефрижераторного контейнера. Холодильная установка рефрижераторного контейнера содержит компрессор, соединенный с конденсатором, ресивер, установленный за конденсатором и соединенный с терморасширительным вентилем, испаритель-воздухоохладитель, регенеративный теплообменник, обеспечивающий теплообмен между парами хладагента, поступающими из испарителя, и жидким хладагентом, поступающим из конденсатора, фильтр-осушитель и индикатор влагосодержания, последовательно размещенные после ресивера, блок управления и датчики температуры. Установка дополнительно содержит радиатор, соединенный с конденсатором, теплообменник, соединенный с радиатором, жидкостный насос, подающий хладоноситель от радиатора в дополнительный теплообменник и конденсатор, электромагнитные вентили, установленные с возможностью соединения теплообменника с радиатором и насосом, сильфон, установленный ...

КОМПОЗИЦИИ, СОДЕРЖАЩИЕ ФТОРЗАМЕЩЕННЫЕ ОЛЕФИНЫ

... 1. Теплопередающая композиция, включающая, по меньшей мере, один фторалкен формулы I где Х означает ненасыщенный, замещенный или незамещенный С2- или С3-алкильный радикал, R независимо означает Cl, F, Br, I или Н и z равен 1-3, причем эта теплопередающая композиция имеет потенциал глобального потепления (ПГП) не выше приблизительно 150. 2. Теплопередающая композиция по п.1, в которой названный, по меньшей мере, один фторалкен является соединением формулы II где каждый из R независимо означает Cl, F, Br, I или Н; R' означает (CR2)nY; Y означает CRF2; и n равно 0 или 1. 3. Теплопередающая композиция по п.2, где Y означает CF3. 4. Теплопередающая композиция по п.3, где, по меньшей мере, один R у ненасыщенного концевого углерода не является F. 5. Теплопередающая композиция по п.4, где, по меньшей мере, один R у ненасыщенного концевого углерода является водородом. 6. Теплопередающая композиция по п.2, где n равно 0. 7. Теплопередающая композиция по п.2, где Y означает CF3 и n равно 0. 8. Теплопередающая ...

Холодильная машина

Изобретение относится к холодильной технике, в частности к компрессорным холодильным агрегатам, в том числе для тепловых насосов и кондиционеров. Холодильная машина содержит замкнутый контур, в который включены компрессор, конденсатор, выполненный в виде спирального змеевика из плоской трубки, установленного с натягом во внутренней полости цилиндрического баллона, трубопровод с терморегулирующим вентилем, соединяющий конденсатор и змеевиковый испаритель, обратный трубопровод, соединяющий змеевик испарителя и конденсатор. При этом вход обратного трубопровода в конденсатор выполнен касательно к внутренней поверхности баллона конденсатора. Техническим результатом является увеличение КПД и снижение расхода электроэнергии. 3 ил.

КОМПОЗИЦИИ, СОДЕРЖАЩИЕ ФТОРЗАМЕЩЕННЫЕ ОЛЕФИНЫ

... 1. Вспениваемая композиция, включающая, по меньшей мере, один формирующий пену компонент и вспенивающий агент, содержащий, по меньшей мере, один фторалкен формулы II: ! ! где каждый R независимо означает Cl, F, Br, I или Н; ! R′ означает (CR2)nY; ! Y означает CF3; ! и n равно 0 или 1, и где, по меньшей мере, один R у ненасыщенного концевого углерода является Н и, по меньшей мере, один из остающихся R представляет собой F, причем названный фторалкен имеет потенциал глобального потепления (ПГП) не более чем приблизительно 150. ! 2. Композиция по п.1, в которой вспенивающий агент имеет ПГП не более чем приблизительно 100. ! 3. Композиция по п.1, в которой вспенивающий агент имеет потенциал истощения озонового слоя (ПИОС) не более чем приблизительно 0,05. ! 4. Композиция по п.1, в которой, по меньшей мере, один заместитель у ненасыщенного концевого углерода фторалкена представляет собой F. ! 5. Композиция по п.1, в которой образующий пену компонент содержит, по меньшей мере, полиол. ! 6. Композиция ...

СПОСОБ И СИСТЕМА ОХЛАЖДЕНИЯ БОРТОВОГО ОБОРУДОВАНИЯ ЛЕТАТЕЛЬНОГО АППАРАТА

СИСТЕМА ДЛЯ ВЫПОЛНЕНИЯ КОМПРЕССИОННОГО ХОЛОДИЛЬНОГО ЦИКЛА, ИСПОЛЬЗУЮЩАЯ ВОДУ В КАЧЕСТВЕ ХЛАДАГЕНТА

... 1. Система для выполнения парокомпрессионного холодильного цикла с использованием воды в качестве хладагента, содержащая:испаритель, выпускающий водяной пар с первой температурой водяного пара и с первым давлением водяного пара;конденсатор, выпускающий воду в жидком состоянии, имеющую вторую температуру, превышающую первую температуру, и второе давление, превышающее первое давление; икомпрессор, функционально расположенный ниже испарителя и выше конденсатора по течению хладагента и предназначенный сжимать водяной пар, тем самым повышая температуру этого водяного пара от указанной первой температуры и повышая давление этого водяного пара от указанного первого давления в соотношении, по меньшей мере, 7:1.2. Система по п.1, отличающаяся тем, что удельный объем водяного пара на входе компрессора составляет приблизительно 149-155 м/кг.3. Система по п.1, отличающаяся тем, что давление водяного пара повышается в соотношении, по меньшей мере, 8:1.4. Система по п.1, отличающаяся тем, что давление ...

БЛИЗКАЯ К АЗЕОТРОПНЫМ КОМПОЗИЦИЯ И ЕЕ ПРИМЕНЕНИЕ

... 1. Близкая к азеотропной композиция, содержащая эффективные количества транс-1,3,3,3-пентафторпропана (TpaHcHFO-1234ze) и соединение, которое выбирают из группы, состоящей из 1,1-дифторэтана («HFC-152a»), 1,1,1,2,3,3,3-гептафторпропана («CHFC-227ea»), 1,1,1,2, -тетрафторэтана («HFC-134a»), 1,1,1,2,2-пентафторэтана («HFC-125») и комбинации двух или более этих соединений. 2. Близкая к азеотропной композиция по п.1, содержащая эффективные количества трансHFO-1234ze и соединение, которое выбирают из группы, состоящей из 1,1-дифторэтана («HFC-152a»), 1,1,1,2,3,3,3-гептафторпропана («HFC-227ea»), 1,1,1,2,-тетрафторэтана («HFC-134a») и 1,1, 1,2,2-пентафторэтана («HFC-125»). 3. Близкая к азеотропной композиция по п.1, содержащая до примерно 75 мас.% трансHFO-1234ze и остальное HFC-134a. 4. Близкая к азеотропной композиция по п.1, содержащая до примерно 60 мас.% трансHFO-1234ze и остальное HFC-134a. 5. Близкая к азеотропной композиция по п.1, содержащая до примерно 40 мас.% трансHFO-1234ze и остальное ...

Vorrichtung mit Kühlkreislauf

Kühlsystem und Verfahren zum Betreiben eines Kühlsystems

Kühlsystem mit einem Kältemittelkreislauf zum zyklischen Transportieren von Kältemittel von zumindest einer Kompressoreinheit zum Komprimieren gasförmigen Kältemittels zu einer Kondensiereinheit zum Kondensieren gasförmigen Kältemittels in flüssiges Kältemittel, von der Kondensiereinheit zu einer Verdampfereinheit zum Verdampfen des flüssigen Kältemittels in gasförmiges Kältemittel, und von der Verdampfereinheit zurück zu der Kompressoreinheit, und einem Schmierkreislauf mit zumindest einer Versorgungsleitung für schmierendes Kältemittel zum Bereitstellen von Kältemittel als Schmiermittel an einer Lageranordnung, wobei die zumindest eine Versorgungsleitung für schmierendes Kältemittel von dem Kältemittelkreislauf an der Kondensiereinheit abzweigt, um Kältemittel an der Lageranordnung bereitzustellen, und mit dem Kältemittelkreislauf an der Verdampfereinheit wiedervereinigt ist, um Kältemittel aus der Lageranordnung in den Kältemittelkreislauf zurückzuführen.

Fahrzeugklimaanlagensystem

Bereitgestellt ist ein Klimaanlagensystem für ein Fahrzeug. Das Klimaanlagensystem für ein Fahrzeug weist einen Kompressor, einen Integralkondensator, in dem ein Wasserkühlbereich und ein Luftkühlbereich miteinander integral ausgebildet sind, ein Expansionsventil, und einen Verdampfer auf, wobei der Wasserkühlbereich und der Luftkühlbereich des Integralkondensators auf einer Platte gebildet sind, sodass bestehende Luftkühl- und Wasserkühlkondensatoren durch einmaliges Lötverbinden integral miteinander ausgebildet werden können, wodurch eine Baugruppengröße reduziert werden kann und Montage- und Fertigungsprozesse vereinfacht werden können.

Kältekreislauf-Vorrichtung

Eine Kältekreislauf-Vorrichtung umfasst: eine Pumpe (11) auf der Seite mit einer niedrigen Temperatur, die ein Wärmemedium auf der Seite mit einer niedrigen Temperatur ansaugt und ablässt; einen Kompressor (21), der ein Kältemittel ansaugt, komprimiert und ablässt; eine Wärmeabstrahlungs-Vorrichtung (15), die Warme aus einem Kältemittel mit einem hohen Druck abführt, das aus dem Kompressor (21) abgelassen wird; eine Dekompressions-Vorrichtung (23c, 65b), die das Kältemittel mit einem hohen Druck dekomprimiert, aus dem Wärme mittels der Wärmeabstrahlungs-Vorrichtung (13) abgeführt wurde; einen inneren Wärmetauscher (24), der Wärme zwischen dem Kältemittel mit einem hohen Druck, das aus der Wärmeabstrahlungs-Vorrichtung (15) heraus strömt, und dem Kältemittel mit einem niedrigen Druck austauscht, das aus einem Wärmemedium-Kühler (14) heraus strömt; einen Erfassungsabschnitt (23a) für die Temperatur des Kältemittels mit einem niedrigen Druck, der eine Temperatur in Verbindung mit einer Temperatur ...

DRUCKLUFTTROCKNER

Kältemittelverdampfer mit gleichmässiger Temperatur der Ausblasluft

Vorrichtung zum Kuehlen von Getraenken

Kompressions-Kuehlschrank,insbesondere fuer den Haushalt

Wassergekühlte Konstanttemperatur-Flüssigkeitszirkuliervorrichtung und Verfahren zur Steuerung der Temperatur der zirkulierenden Flüssigkeit

Die Erfindung ist auf eine wassergekühlte Konstanttemperatur-Flüssigkeitszirkuliervorrichtung gerichtet, bei welcher die Stabilität der Temperatur einer zirkulierenden Flüssigkeit durch Optimierung eines Strömungskanals für das Radiatorwasser verbessert werden kann, und auf ein Verfahren zur Steuerung der Temperatur der zirkulierenden Flüssigkeit in der Vorrichtung. In einer wassergekühlten Konstanttemperatur-Flüssigkeitszirkuliervorrichtung ist ein Wärmetauschbereich des Radiatorrohres, in dem die Strömungsmenge des Radiatorwassers gesteuert wird, an einem Tank angebracht, eine Pumpe ist in einer Leitung vorgesehen, um die zirkulierende Flüssigkeit in dem Tank durch die externe Vorrichtung zu zirkulieren, und eine Konstanttemperaturzirkulationsflüssigkeit wird durch die Pumpe in die Leitung in der externen Vorrichtung gefördert. Ein elektrisches Proportionalventil zur Steuerung der Strömungsmenge des Radiatorwassers, das dem Wärmetauschbereich des Radiatorrohres zugeführt wird, und ein ...

Leistungsregelung an Kuehleinrichtungen

Improved automatic switching device for measuring the gas underpressure in refrigerators of the motor-compressor type

... 994, 004. Pressure gauges. USTAV PRE ROZVOJ STROJARSKEHO SPOTREBNEEO TOVARU. Nov. 20, 1963 [Nov. 21, 1962], No. 45871/63. Heading G1L. An automatic switching device for measuring gas under pressure in a refrigerator of the motor compressor type has two hollow arms 1, 2 one arm 1 of which has an enlarged bottom part and an open upper end which is connected to the motor compressor and the other arm 2 of which is evacuated and carries a displaceable sleeve containing an incandescent lamp 4 and a photo-electric cell 5, the arrangement being such that the sleeve with the lamp 4 and cell 5 is adjustable along a guideway 8 parallel to the arm 2, at restriction 6 is provided to damp movement of the mercury 3. When the path of the light rays is interrupted by the mercury 3 the filling mechanism operates but as soon as the pressure in the container 1 falls the light rays will no longer be interrupted and the filling mechanism is stopped.

Air conditioner

When a first heat exchanger, namely a heat-source-side heat exchanger (12), is acting as a condenser, this air conditioner is controlled such that, as a refrigerant flows through a first bypass pipe (4a) to an inlet-side pipe for a compressor (10) via throttling devices (14a and 14d), said refrigerant also flows through a second bypass pipe (4b) via one of the throttling devices (14b) and is introduced into a compression chamber via an injection port. When the heat-source-side heat exchanger (12) is acting as an evaporator, the air conditioner is controlled such that the refrigerant flows through the second bypass pipe (4b) via the aforementioned throttling device (14b) and is introduced into the compression chamber via the injection port and the other throttling device (14d) is either closed completely or closed down such that almost no refrigerant flows therethrough.

Electrochemical refrigeration systems and appliances

Improvements in or relating to methods of producing refrigeration and to refrigerating systems

... 489,647. Refrigerating. BORGWARNER CORPORATION. Dec. 28, 1936, No. 35527. Convention date, Dec. 30, 1935. [Class 29] Compression systems.-A mixture of refrigerants of different boiling-points is evaporated in stages in an evaporator having an ice-making coil section 32 connected to a header 31 and an air-cooling tubular section 28, 38 supplied from another header 30 communicating with the first by conduits 43 at different levels, the two sections being at the same suction pressure. It is stated that the more volatile refrigerant evaporates mainly in the ice-making section at a lower temperature than the remainder in the other section. The ice-making coils and headers are located within a metal-walled compartment 24 and the air-cooling section, comprising straight finned tubes between sub-headers.34, 36, in the storage space of a cabinet. The system includes a float valve 17 controlling the flow of refrigerant from a receiver 15, and a thermal switch 20 controlling the motor 10 of the compressor ...

Electrochemical compressor refrigeration apparatus with integral leak detection system

Beverage cooling

Refrigeration cycle device, equipment, and refrigeration cycle method

APPARATUS TO PROVIDE TEMPERATURE CONTROL AND CIRCULATION OF LIQUID

A constant temperature liquid circulating apparatus has a constant temperature liquid circuit section 93 in which a liquid is supplied and returned from a load 2, a refrigerating circuit section 92 and a control section 94. The refrigerating circuit section provides cooling or heating and has a main circuit which comprises a compressor 7 having its rotational speed controlled by an inverter power source, a condenser 8, an evaporator 10 and a first electronic expansion valve 56 in series connection, and a hot gas circuit 58 which bypasses the condenser and first electronic expansion valve. The bypass line 58 has a second electronic expansion valve 59 and supplies a portion of the high temperature refrigerant discharged from the compressor to the evaporator. The constant temperature liquid circuit has a tank 24, a heat exchanger 25 to heat or cool the liquid returned from the load 2, at least one temperature sensor 37 to detect the liquid temperature, and circulating means to supply the temperature ...

Purging non-condensible gases from a refrigeration unit

The presence of an undesirable quantity of noncondensible gases in a refrigeration unit is inferred as a function of both the vapour pressure (44) and temperature (40) at a selected point in the refrigeration unit where the noncondensible gases tend to gather, e.g. the accumulator (16). Purging of these noncondensible gases, which contaminate the refrigerant, via the valve 36 is responsive to a comparison in a programmable controller (50) of the actual vapour pressure measured at the selected point, and the known pressure of uncontaminated refrigerant at the temperature existing at the selected point. ...

AIR CONDITIONING APPARATUS

Refrigeration system utilizing an expansion jet compressor

A closed loop vapor cycle refrigeration system having an enthalpy-expander-jet-compressor (100) is disclosed. A portion of the liquid refrigerant in the system is expanded into gas in the enthalpy expander (114). The expanded gas (122) is used to operate a compressor (144) coupled to the evaporator outlet (65). The compressor (144) compresses the low pressure gas from the evaporator (50) and discharges the compressed gas either to a primary compressor (14) or to the condenser (28). A novel enthalpy-expander-jet-compressor (100) is also disclosed for use in the refrigeration system. ...

Dehumidifier

A dehumidifier provides ducted dry air at a specific location, the air passing only once through the dehumidifier which comprises a cabinet (1) defining an airtight plenum chamber and containing a refrigeration compressor (3), an evaporator (4) co-operating with an air inlet aperture, a condenser (5) co- operating with an air outlet aperture and a fan (6) to draw air into the plenum chamber through the inlet aperture and to expel air through the outlet aperture. The dehumidifier may include a damper (20) at the air outlet aperture to permit the performance to be increased in hot and/or humid ambient atmospheres. The dehumidifier may also include a refrigerant to fluid heat exchanger (22) to extract heat from the refrigerant gas flowing in a tube (9) leading the gas from the compressor (3) to the condenser (5), thereby to allow the dehumidifier to supply air at a very low dew point and at a low temperature. ...

Freezing apparatus for liquids

... 963,170. Ice-making. E. WILBUSHEWICH. Nov. 28, 1962 [Feb. 7, 1962], No. 45039/62. Heading F4H. In ice-making apparatus comprising moulds 1 having internal depending evaporators 2 and jacket evaporators 5 the evaporators are connected in series, evaporators 5 are connectible either to receive liquid refrigerant supplied by a pump 30 or to discharge liquid refrigerant to a receiver 17 and evaporators 2 are connectible either to discharge partly vaporized refrigerant to a separator 19 or to receive hot gaseous refrigerant from a line 14. Liquid refrigerant is supplied from a pressure reducing valve (not shown) through a line 13 to the lower part 18 of the separator 19 whence it is supplied to a header 32 by the pump 30, gaseous refrigerant containing entrained liquid being returned from the evaporators through line 21 to the upper part 20 of the separator 19 to which a suction line 15 is connected. Four batteries of moulds B1-B4 are shown, the moulds of battery B1 being connected for freezing ...

THERMODYNAMIC CYCLE FOR COOLING A WORKING FLUID

Air conditioner and air conditioning system

The present invention is provided with: a refrigerant circuit that has a compressor, an exterior heat exchanger, an expansion valve, and an interior heat exchanger connected via refrigerant piping and forms a refrigerating cycle; and a control means that, by controlling the refrigerating cycle on the basis of a sensible heat capacity or latent heat capacity obtained from the cooling capacity of the refrigerant circuit and the cooling load of the refrigerant circuit, causes heat exchange to occur in the interior heat exchanger, controlling discharge air temperature. Therein, the control means has a capacity determination means that determines the cooling capacity of the refrigerant circuit on the basis of the sensible heat capacity or latent heat capacity, and a control selection means that selects, on the basis of the determination result of the capacity determination means, a superheating degree control for controlling the degree of superheating, or an evaporation temperature control for ...

Cooling instrumentation in an underground environment

An apparatus and method are disclosed for actively cooling instrumentation (170), such as electronic circuits, in a downhole tool. This apparatus includes a compressor (130), condenser (140) and expansion valve (150) connected in circuit to an evaporator (160) or heat exchanger. The evaporator/heat exchanger includes an inner container (200) positioned about the instrumentation (170), and an outer chamber (220) positioned about the inner container. A cooling fluid absorbs heat from the instrumentation as it passes through the inner container. The fluid then passes into the outer container where it may absorb heat from the wellbore. The heated fluid is then pressurized via the compressor, condensed into liquid via the condenser and selectively released back into the internal container upon cooling via the expansion valve. The fluid continuously circulates through the system whereby the instrumentation is insulated from heat and/or cooled. The downhole tool may be as wireline tool or a drilling ...

Electrochemical refrigeration systems and appliances

A refrigeration system comprises a condenser 102, an evaporator 104, a compressor 106 comprising an electrochemical cell 112 and uses a refrigerant comprising a working fluid and an electrochemically active fluid. A phase separator 130 downstream of the compressor 106 comprises an inlet 132, a first outlet 134 to exhaust the working fluid through the evaporator 104, and a second outlet 136 to exhaust the electrochemically active fluid such that it bypasses the evaporator 104. The electrochemically active fluid exhausted from the second outlet 136 is combined with the working fluid exhausted from the first outlet 134, downstream of an energy recovery cell 150. The working fluid may be water and the electrochemically active fluid may be hydrogen. The energy recovery cell 150 may comprise a platinum anode (152, Fig. 8) and cathode (154, Fig. 8), and a woven polymer electrolyte (156, Fig. 8). There may be an expansion device 108 between the phase separator 130 and the evaporator 104. An appliance ...

Operation control device and method for operation control

Improvements in and relating to compression refrigerating machines

... 193,070. Buch, P. H., and Groff, H. M.Aug. 15, 1921. Fluid-actuated valves.-The expansion valve 6, Fig. 5, of a compression refrigerating machine wherein the refrigerant evaporates directly into a liquid to be used as a cooling-medium is controlled by bellows members 8, 12 in communication respectively with the low and high pressure parts of the system, the bellows 8 opening directly into the vapour space of the evaporator while the bellows 12 communicates through a pipe 14 with the delivery pipe a ot the condenser. Normally, the contraction of the bellows 8 due to the suction of the compressor overcomes a spring 11 tending to close the valve. In the event of obstruction of the valve the bellows 12 expands against the action of springs 15, Fig. 6, and through a cross-rod 13 assists the action of the bellows 8.

Refrigeration device and controller for refrigeration device

Refrigeration system and control device

A control device includes a compressor control unit that operates both of a first compressor and a second compressor when a first frequency ratio is greater than or equal to a preset threshold value and operates one of the first compressor and the second compressor when the first frequency ratio is less than the threshold value, where the first frequency ratio is a value obtained by dividing the sum of the operation frequency of the first compressor and the operation frequency of the second compressor by a preset first rated frequency. The threshold value is determined on the basis of the outside air temperature, the temperature of a heat medium flowing in a heat medium circuit, or the output of a pump.

Cooling of an oil circuit of a turbomachine

The invention relates to a turbomachine such as a turbojet engine or a turboprop engine of an aircraft, comprising at least one oil circuit (8) and cooling means (19) comprising a refrigerant circuit (20) provided with a first heat exchanger (21) capable of exchanging heat between the refrigerant and the air and forming a condenser, a second heat exchanger (22) capable of exchanging heat between the refrigerant and the oil of the oil circuit and forming an evaporator, an expander (23) mounted downstream from the first exchanger (21) and upstream from the second exchanger (22), in the direction in which the refrigerant circulates, and a compressor (24) mounted downstream from the second exchanger (22) and upstream from the first exchanger (21).

Refrigeration cycle device and abnormality detection system for refrigeration cycle device

A refrigeration cycle device 101 is provided with: a refrigeration cycle in which a compressor 1, an outdoor heat exchanger 3, expansion valves 14a, 14b, and indoor heat exchangers 15a, 15b are connected by coolant piping, and in which a coolant is circulated; a heat source unit 304 housing the outdoor heat exchanger 3; utilization units 303a, 303b housing the indoor heat exchangers 15a, 15b; and a control device 107 for controlling at least the operation and stoppage of the refrigeration cycle. The control device 107 detects abnormalities in the refrigeration cycle on the basis of the temperature or the pressure of the refrigeration cycle during a refrigeration cycle stoppage period.

Chilling unit and water-circulating temperature-adjustment system

A chilling unit and a water-circulating temperature-adjustment system are provided with: a refrigerant circuit including a compressor, a pair of air-side heat exchangers, an expansion valve, and a heat medium-side heat exchanger which are connected by piping to circulate refrigerant; piping for circulating heat medium; a flow passageway switching device for switching the circulation path of refrigerant; a temperature sensor; pressure sensors; and a control device. The control device controls the compressor on the basis of a target exit temperature that is set in advance, a heat medium temperature measured by means of the temperature sensor, and a pressure difference of the heat medium measured by means of the pressure sensors. If the load of a load-side apparatus becomes a low load less than or equal to a lowest capacity of the compressor, start-stop avoidance control is implemented in a state in which the lowest capacity operation of the compressor is maintained, and one of the pair of ...

Improvements in compressors of refrigerating systems

... 370,581. Refrigerating compressors. WEST, F. R., 10015, Grandville Avenue, Detroit, Michigan, U.S.A. Feb. 21, 1931, No. 5491. Convention date, Feb. 24, 1930. [Class 8 (i).] A compressor for sealed refrigerating systems comprises a cylinder body 8 reciprocated by an eccentric 13 over stationary pistons 3. The pistons are mounted on a post 2 by a wristpin and block structure 4, and the cylinder body has a cylindrical extension 9 to which and to the base of the post a bellows 16 is soldered to form a seal. The extension is pivotally supported from bearings 12 on the casing 1. A refrigerant inlet 6 extends through the post to the bottom of the wristpin. The compressed refrigerant is led through conduits 19 to a flexible conduit 20 secured to the casing 1 and leading to the refrigerating circuit. The parts are immersed in liquid which fills the casing.

Refrigeration cycle apparatus and air-conditioning apparatus

Outdoor unit

REFRIGERATION APPARATUS

Refrigeration cycle device and air conditioning device

The purpose of the present invention is to prevent lowering of oil concentration and oil exhaustion in a compressor if refrigeration oil incompatible with a refrigerant is used. This refrigeration cycle device is equipped with: a refrigerant circuit; and a bypass path 9 which branches between a compressor 1 and a four-way valve 2 and is connected to an accumulator 700. The interior of the accumulator 700 is provided with an inflow pipe 720 which has a plurality of oil returning mechanisms 710a, 710b of varying heights and is connected to the compressor 1. The refrigeration oil has a characteristic incompatible with the refrigerant. The outlet 9a of the bypass path 9 within the accumulator 700 is provided at a position between the oil returning mechanism 710a located in the lowest position and the oil returning mechanism 710b located in the highest position among the plurality of oil returning mechanisms 710a, 710b.

Method and apparatus for purging non-condensing gases from a refrigeration unit

REFRIGERATION SYSTEM WITH CAPACITY CONTROL

... 1486101 Refrigerating WESTINGHOUSE ELECTRIC CORP 6 Jan 1975 [18 Jan 1974] 376/75 Heading F4H [Also in Division F2] A variable capacity refrigeration system comprises at least one unloadable compressor means 14 and at least one always loaded compressor means 12 which have separate gas discharge lines 18, 16 respectively connected to separate condenser coil surfaces 24, 22, of a condenser 20 the line 18 being closable by a valve arrangement 28 in response to an unloaded condition of the compressor means 14. As particularly described the compressor means are parts in a 50% unloadable multicylinder compressor 10 of the hermetically sealed shell type connected by the lines 16, 18 to the split condenser coil 20. The valve arrangement as shown comprises a solenoid valve 28 controlled by a controller 56 which is responsive to the suction pressure in the common gas suction line 50 leading from the evaporator or load 48 to the compressor. The solenoid valve may be replaced by a pilot type valve having ...

APPARATUS FOR AND METHODS OF TRANSFERRING HEAT BETWEEN BODIES OF FLUID OR OTHER SUBSTANCE

Refrigeration device

Refrigeration cycle device

Air-conditioning device

Group cast solid production of cold.

STIRLING DEVICE

BLOCKHEIZKRAFTWERK

REFRIGERANT CYCLE

COOLING CIRCUIT DEVICE

EQUIPMENT WITH REFRIGERANT CYCLE

REGULATION OF COMPRESSION REFRIGERANT PLANTS.

MODULAR COOLING SYSTEM.

LOAD-SENSITIVE VERY LOW-TEMPERATURE COOLING CIRCUIT

System and Method for Cooling a Computer Processor

A system for cooling one or more computer processors is provided. The system includes a server chassis and one or more server nodes. The server chassis is selectively mountable to a server rack. The one or more server nodes each include a body, at least one of the one or more computer processors, and a refrigeration circuit. The body is selectively mountable to the server chassis. The at least one of the one or more computer processors is disposed on-board the body. The refrigeration circuit is for cooling the at least one computer processor and includes an evaporator and a compressor disposed on-board the body. a 12 g) 3R 44f ...

Refrigerant amount determination method and refrigerant amount determination device

Provided is a refrigerant amount determination method and refrigerant amount determination device capable of ascertaining an appropriate refrigerant filling amount according to the length of refrigerant connection piping in a refrigeration device having a refrigerant circuit in which a gas-liquid two-phase refrigerant flows in liquid-side refrigerant connection piping. This method determines the amount of refrigerant to be filled in a refrigeration device comprising a refrigerant circuit (10) having connected therein: a compressor (21); an outdoor heat exchanger (22) which functions as a condenser; an outdoor expansion valve (28); indoor heat exchangers (41a, 41b) which function as evaporators; liquid-side refrigerant connection piping (5) which sends, to the indoor heat exchangers (41a, 41b), refrigerant decompressed at the outdoor expansion valve (28) after passing through the outdoor heat exchanger (22); and gas-side refrigerant connection piping (6) which sends, to an intake side of ...

Gaseous fluid compression with alternating refrigeration and mechanical compression

A gaseous compression system (10) for compressing a gas from an initial pressure to an exit pressure with a first, blower compression bank (20) and a second, mechanical compression bank (30). Each compression bank has plural stages of gaseous compression with a gaseous fluid compressor (12, 22, 28, 34, 42, 46) and a heat pump intercooler (16, 24, 30, 36, 44, 48). The heat pump intercooler (16, 24, 30, 36, 44, 48) comprises a cascading heat pump intercooler (16, 24, 30, 36, 44, 48) with a high temperature section (56), a medium temperature section (58), and a low temperature section (60), each temperature section with an intercooler core (66). Each stage of the blower compression bank (20) has a high-pressure blower (12, 22, 28, 34), and each stage of the mechanical compressor bank (30) has a mechanical compressor (42, 46).

Refrigerant amount estimation device, method, and program

The present invention facilitates determination of the amount of refrigerant. Provided is a refrigerant amount estimation device which estimates the amount of refrigerant in an air conditioner in which a compressor, a heat source side heat exchanger, a supercooling heat exchanger, a pressure reducing valve, and a use side heat exchanger are connected by pipes and the supercooling heat exchanger exchanges heat between the refrigerant that has passed through a supercooling bypass expansion valve and the refrigerant in a mainstream circuit, the supercooling bypass expansion valve being disposed in a bypass circuit that is connected to the suction-side pipe of the compressor from between the heat source side heat exchanger and the supercooling heat exchanger or between the pressure reducing valve and the supercooling heat exchanger. The refrigerant amount estimation device comprises: an acquisition unit that acquires the state of the refrigerant in a first pipe between the pressure reducing ...

Heat exchanger and refrigeration device

In order to improve the heat exchanging efficiency of a heat exchanger provided with a windward side heat exchange part and leeward side heat exchange part, the windward side heat exchange part (51) is disposed on the windward side with respect to a blowing direction indicated by the arrow (Ar1). The leeward heat exchange part (61) is disposed on the leeward side of the windward side heat exchange part (51). When functioning as an evaporator, a gas outlet pipe (55) is a windward side refrigerant outlet provided in one end side of a windward side flat pipe of the windward side heat exchange part (51), and a gas outlet pipe (65) is a leeward side refrigerant outlet provided in one end side of a leeward side flat pipe of the leeward side heat exchange part (61). A first resistance against the refrigerant flowing toward the windward side heat exchange part (51) and a second resistance against the refrigerant flowing toward the leeward side heat exchange part (61) are adjusted so that the degree ...

MULTI-TYPE AIR CONDITIONER SYSTEM WITH OIL CONTROL FOR PARALLEL OPERATED COMPRESSOR THEREIN

ENERGY EFFICIENT AIR CONDITIONING SYSTEM WITH VARIABLE SPEED COMPRESSOR

MODULAR REFRIGERATION SYSTEM

Refrigeration apparatus

REFRIGERATION APPARATUS A refrigeration apparatus (1) comprises a compressor (2), a condenser (4, 6), an expansion mechanism (5), and an evaporator (6, 4). A refrigerant containing R32, and refrigerator oil for lubricating the compressor (2) are used in the refrigeration apparatus (1). An acid scavenger added in an amount of 1.0 wt% to 5.0 wt% is blended in the refrigerator oil.

Coolant-containing composition, use for same, refrigerator having same, and method for operating refrigerator

The present invention addresses the problem of providing a mixed coolant which exhibits four types of performance which consist of a refrigerating capability and performance coefficient which are identical to those of R410A, a sufficiently low GWP, and mild flammability (class 2L) according to ASHRAE standards. The present invention solves the problem by providing a coolant-containing composition, wherein: the coolant thereof contains trans-1,2-difluoroethylene (HFO-1132(E)) and trifluoroethylene (HFO-1123) in a manner such that the total thereof constitutes 99.5 mass% or more of the total mass of the coolant; and the coolant contains the HFO-1132(E) in an amount which constitutes 62.5-72.5 mass% of the total mass of the coolant.

Hybrid vapor compression-absorption cycle

Compression system with multiple inlet streams

Freezing device construction method and freezing device

Air conditioner

Refrigeration system

A compressor (20) and an expander (30) are installed in the refrigerant circuit (11) of an air conditioner (10). In the compressor (20), the refrigerant compressed by a compressing mechanism (21) is discharged into the internal space of a compressor casing (24). In the compressor (20), the refrigerator oil collected in the bottom of the compressor casing (24) is supplied to the compressing mechanism (21). The refrigerator oil collected in the bottom of the compressor casing (24) is introduced directly into the expanding mechanism (31) of the expander (30) through an oil supply pipe (41).

Refrigeration system

Refrigeration system with bypass subcooling and component size de-optimization

Compression system with multiple inlet streams

Refrigeration apparatus

Disclosed is a refrigerating apparatus wherein a power module (61) is attached in contact with a refrigerant cooler (81), and the power module is cooled by having a refrigerant dissipate heat, said refrigerant circulating inside of the refrigerant cooler (81). At that time, a controller (60) outputs drive signals to a drive circuit (31), and controls to reduce the number of times the switching is performed by a switching element (37).

Air conditioning system

Indoor unit for air conditioner

Air conditioning apparatus

Enclosed compressor

Subcooling apparatus

A quick cooling air conditioning system

IMPROVING REFRIGERATING CAPACITY

REFRIGERATION SYSTEM

Универсальная судовая холодильная установка

Полезная модель может быть использована в системе рефрижерации судов. Целью полезной модели является унификация, упрощение и снижение эксплуатационных затрат на техобслуживание судовых холодильных установок для высокотемпературных и низкотемпературных провизионных кладовых. Для этого низкотемпературный компрессор снабжен электродвигателем с повышенной мощностью, после испарителя параллельно установлены регуляторы давления «до себя» с уставками высокотемпературного и низкотемпературного режимов работы установки. На линии впрыска жидкой фазы в компрессор и низкотемпературного регулятора давления установлены запорные клапаны. 2 з.п. ф-лы, 1 ил. Ц 1 174435 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) (11) за аз (13) (51) МПК Е25В 1/00 (2006.0Т) Вб3/ 2/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2016139734, 10.10.2016 (24) Дата начала отсчета срока действия патента: 10.10.2016 Дата регистрации: 12.10.2017 Приоритет(ы): (22) Дата подачи заявки: 10.10.2016 (45) Опубликовано: 12.10.2017 Бюл. № 29 Адрес для переписки: 644105, г. Омск-105, ул. 22 Партсъезда, 97, корп. 1, ООО НТК "Криогенная техника", отд. 193 (72) Автор(ы): Милютин Юрий Викторович (КО), Мифтахов Рафик Мугалимович (КО), Панютич Андрей Александрович (КО) (73) Патентообладатель(и): Общество с ограниченной ответственностью "Научно-технический комплекс "Криогенная техника" (КО) (56) Список документов, цитированных в отчете о поиске: КО 2362095 СТ, 20.07.2009. ЗЧ 1749646 АТ, 23.07.1992. 5Ц 1254256 АТ, 30.08.1986. 0$ 0007028494 В2, 18.04.2006. (54) УНИВЕРСАЛЬНАЯ СУДОВАЯ ХОЛОДИЛЬНАЯ УСТАНОВКА (57) Реферат: Полезная модель может быть использована в системе рефрижерации судов. Целью полезной модели является унификация, упрощение и снижение эксплуатационных затрат на техобслуживание судовых холодильных установок для высокотемпературных и низкотемпературных провизионных кладовых. Для этого низкотемпературный компрессор Стр.: 1 снабжен электродвигателем с ...

Oil separation means and refrigeration device equipped with the same

An object is to provide centrifugal-separation oil separation means capable of improved cyclone efficiency and a refrigeration device equipped with the same. The oil separation means includes an outer cylinder ( 2 ) that extends in an axial direction; an inner cylinder ( 3 ) that passes through the interior of the outer cylinder ( 2 ) in the axial direction; a pair of end plates ( 4 a, 4 b ) provided at both ends of the outer cylinder ( 2 ) in the axial direction; an inlet port ( 5 ) that is connected to the outer cylinder ( 2 ) near one of the end plates ( 4 a ) and that introduces an oil-containing fluid discharged from a compressor into a space ( 7 ) formed between the outer cylinder ( 2 ) and the inner cylinder ( 3 ) so as to swirl about the axis; an outlet port ( 6 ) that is connected to the outer cylinder ( 2 ) near the other end plate ( 4 b ) and that expels the fluid, from which the oil has been centrifugally separated, out of the space ( 7 ); and an oil discharge port, provided in the outer cylinder ( 2 ), for discharging the separated oil out of the space ( 7 ), wherein a partition plate ( 8, 9 ) that extends over at least part of a cross-section perpendicular to the axial direction to partition the space ( 7 ) in the axial direction is provided in the space ( 7 ).

REFRIGERANT STORAGE IN SECONDARY LOOP REFRIGERATION SYSTEMS

A process and system for storing and recovering a secondary refrigerant such as carbon dioxide in a secondary loop refrigeration system after a shutdown of the primary refrigeration system using ionic liquids is described. The process eliminates the release of the secondary refrigerant into the environment and the need to recharge the secondary loop after a shutdown of the primary refrigeration system. 1. In a secondary loop refrigeration system that comprises a primary refrigeration loop containing a primary refrigerant , a secondary refrigeration loop containing a secondary refrigerant , and a heat exchanger contacted by both the primary and secondary refrigeration loops , a method of storing secondary refrigerant , comprising (a) flowing at least a portion of the secondary refrigerant from the secondary loop to an auxiliary container; and (b) absorbing at least a portion of the flowed secondary refrigerant with an ionic liquid in the auxiliary container to form a mixture thereof.2. A method according to further comprising a step of separating the second refrigerant from an ionic liquid claim 1 , and flowing the separated secondary refrigerant from the auxiliary container back into the secondary loop.3. A method according to wherein separating the secondary refrigerant from an ionic liquid comprises heating the mixture of the ionic liquid and absorbed secondary refrigerant.4. A method according to further comprising a step of compressing the primary refrigerant.5. A method according to further comprising a step of absorbing the prim ref in an ionic liquid.6. A method according to wherein the secondary refrigerant comprises carbon dioxide.8. A method according to wherein an ionic liquid comprises an anion selected from one or more members of the group consisting of: [CHCO] claim 1 , [HSO] claim 1 , [CHOSO] claim 1 , [CHOSO] claim 1 , [AlCl] claim 1 , [CO] claim 1 , [HCO] claim 1 , [NO] claim 1 , [NO] claim 1 , [SO] claim 1 , [PO] claim 1 , [HPO] claim 1 , [HPO] ...

COOLING SYSTEM AND COOLING METHOD

A cooling system for cooling a superconducting device by a low-temperature fluid is provided. A flow generator for producing a flow in the low-temperature fluid is provided in the cooling system. The low-temperature fluid flowing through the superconducting device is heated. The flow generator is used to produce a flow in the heated low-temperature fluid. The low-temperature fluid is cooled and supplied to the superconducting device. 1. A cooling system for cooling a superconducting device by a low-temperature fluid , comprising:a coolant circuit comprising a coolant outlet configured to supply a low-temperature fluid to the superconducting device, a coolant inlet configured to receive the fluid flowing through the superconducting device, and a coolant line configured to connect the inlet and the outlet;a low-temperature chamber configured to accommodate a first part of the coolant line upstream of the coolant outlet, a first heat exchanger configured to cool the fluid flowing in the first part toward the coolant outlet, a second part of the coolant line downstream of the coolant inlet, and a second heat exchanger configured to heat the fluid flowing in the second part; anda flow generator provided outside the low-temperature chamber and located in a third part of the coolant line connecting the first part and the second part, the flow generator being configured to generate a flow in the coolant line.2. The cooling system according to claim 1 , wherein the second heat exchanger heats the low-temperature fluid to a guaranteed operating temperature range of the flow generator.3. The cooling system according to claim 2 , wherein the guaranteed operating temperature range includes a room temperature claim 2 , and the flow generator is located in a room temperature environment.4. The cooling system according to claim 1 , wherein the second heat exchanger heats the fluid flowing in the second part claim 1 , by using the fluid fed from the flow generator to the first heat ...

COOLING SYSTEM AND METHOD FOR OPERATING A COOLING SYSTEM

A cooling system for cooling food on board an aircraft includes a cooling circuit adapted to supply cooling energy to at least one cooling station, a refrigerant circulating in the cooling circuit selected such that it is convertible at least partially from the liquid to the gaseous state of aggregation on releasing its cooling energy to the at least one cooling station and subsequently convertible back at least partially to the liquid state of aggregation again by an appropriate pressure and temperature control in the cooling circuit, and a refrigerant container including a receiving space arranged in an interior space of the refrigerant container which receives the refrigerant circulating in the cooling circuit, the receiving space of the refrigerant container connected to the cooling circuit by a flow line for discharging the refrigerant from the receiving space and by a return line for returning the refrigerant into the receiving space. 1. Cooling system for cooling food on board an aircraft , comprising:a cooling circuit adapted to supply cooling energy to at least one cooling station, a refrigerant circulating in the cooling circuit being selected such that it is convertible at least partially from the liquid to the gaseous state of aggregation on releasing its cooling energy to the at least one cooling station and subsequently convertible back at least partially to the liquid state of aggregation again by an appropriate pressure and temperature control in the cooling circuit; anda refrigerant container which comprises a receiving space arranged in an interior space of the refrigerant container and intended for receiving the refrigerant circulating in the cooling circuit, the receiving space of the refrigerant container being connected to the cooling circuit by a flow line for discharging the refrigerant from the receiving space and by a return line for returning the refrigerant into the receiving space wherein there is arranged in the receiving space of the ...

REFRIGERANT CIRCUIT WITH INTEGRATED MULTI-MODE THERMAL ENERGY STORAGE

Disclosed is a method and device for a refrigerant-based thermal energy storage and cooling system with integrated multi-mode refrigerant loops. The disclosed embodiments provide a refrigerant-based thermal storage system with increased versatility, reliability, lower cost components, reduced power consumption and ease of installation. 1. An integrated refrigerant-based thermal energy storage and cooling system comprising: a condensing unit, said condensing unit comprising a compressor and a condenser;', 'a thermal energy storage module containing a thermal storage media and a primary heat exchanger that facilitates heat transfer from said refrigerant to said thermal storage media in a charge mode, and said primary heat exchanger that facilitates heat transfer from said thermal storage media to cool said refrigerant in a discharge mode;', 'a storage expansion device connected downstream of said condensing unit and upstream of said thermal energy storage module;', 'an evaporator expansion device connected downstream of said condensing unit and said thermal energy storage module;', 'an evaporator connected downstream of said evaporator expansion device; and,', 'a valve system that facilitates flow of refrigerant to said storage module from said compressor or said condenser or said storage expansion device or said evaporator, said valve system that facilitates flow of refrigerant from said storage module to said compressor or said condenser or said evaporator expansion device., 'a refrigerant loop containing a refrigerant comprising2. The system of further comprising:a refrigerant management vessel in fluid communication with, and located downstream of said condenser.3. The system of wherein said storage expansion device is chosen from the group consisting of a thermal expansion valve claim 1 , an electronic expansion valve claim 1 , a static orifice claim 1 , a capillary tube claim 1 , and a mixed-phase regulator.4. The system of wherein said evaporator expansion ...

REFRIGERATION SYSTEM CONTROLLED BY REFRIGERANT QUALITY WITHIN EVAPORATOR

A method of controlling a refrigeration system having a refrigerant disposed within a circulation loop with a compressor, a condenser and an evaporator, wherein the method includes the steps of (a) compressing the refrigerant within the compressor and cooling the refrigerant within the condenser; (b) flowing the refrigerant to the evaporator; (c) reducing the pressure of the refrigerant within the evaporator; (d) flowing refrigerant from an outlet opening of the evaporator to the compressor; (e) repeating steps (a)-(d); and (f) controlling the flow of refrigerant to the evaporator in step (b) based upon the condition of the refrigerant within the evaporator upstream of the outlet opening. 1. A method of controlling a refrigeration system , wherein the refrigeration system comprises a refrigerant disposed within a fluid-tight circulation loop including a compressor , a condenser and an evaporator , the refrigerant being capable of existing in a liquified state , a gaseous state and a two-phase state comprising both refrigerant in the liquified state and refrigerant in the gaseous state , the evaporator having an upstream section with an inlet opening and a downstream section with an outlet opening , the method comprising:(a) compressing refrigerant in a gaseous state within the compressor and cooling the refrigerant within the condenser to yield refrigerant in a liquified state;(b) flowing the refrigerant in a liquified state into the evaporator;(c) reducing the pressure of the refrigerant within the evaporator to yield refrigerant in a two-phase state;(d) reducing the pressure of the refrigerant in a two-phase state within the evaporator to yield a refrigerant in a gaseous state;(e) flowing refrigerant in a gaseous state from the evaporator to the compressor;(f) repeating steps (a)-(e); and(g) controlling the flow of refrigerant in a liquid state to the evaporator in step (b) based upon the condition of the refrigerant within the evaporator upstream of the outlet ...

COMPRESSOR AND REFRIGERATION CYCLE DEVICE USING SAME

According to a compressor and a refrigeration cycle device using same of the present invention, a refrigerant and refrigeration oil are sealed in an container , the refrigerant is a hydrofluoroolefin having double bond of carbon in its composition or a mixture of hydrofluoroolefin as a base component and hydrofluorocarbon having no double bond, and at least one of benzotriazole, dialkyl dithiophosphoric acid zinc, dialkyl selenium, metal phenate, and organic nitrogen compound is included in the refrigeration oil , and it is an object to suppress the decomposition and polymerization of refrigeration oil and a refrigerant, and to secure reliability of the compressor and the refrigeration cycle device. 1. A compressor wherein a refrigerant and refrigeration oil are sealed , the refrigerant is a hydrofluoroolefin having double bond of carbon in its composition or a mixture of hydrofluoroolefin as a base component and hydrofluorocarbon having no double bond , and at least one of benzotriazole , dialkyl dithiophosphoric acid zinc , dialkyl selenium , metal phenate , and organic nitrogen compound is included in the refrigeration oil.2. The compressor according to claim 1 , wherein an amine-based antioxidant is included in the refrigeration oil.3. The compressor according to claim 2 , wherein the amine-based antioxidant is at least one of phenyl-alpha-naphthylamine and dialkyl diphenyl amine.4. The compressor according to claim 1 , wherein a phenol-based antioxidant is included in the refrigeration oil.5. The compressor according to claim 4 , wherein the phenol-based antioxidant is at least one of 2 claim 4 , 6-ditertiary-butyl-p-cresol (DBPC) claim 4 , 3-arylbenzofuran-2-one (intramolecule cyclic ester of hydroxycarboxylic acid).6. The compressor according to claim 1 , wherein a sulfur claim 1 , phosphorus-based antioxidant is included in the refrigeration oil.7. The compressor according to claim 6 , wherein the sulfur claim 6 , phosphorus-based antioxidant is at least one ...

HIGH CAPACITY CHILLER COMPRESSOR

A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section. 1. A method for operation of a high capacity chiller system comprising:providing a centrifugal compressor assembly for compression of a refrigerant in a refrigeration loop, said refrigeration loop including an evaporator section containing a refrigerant gas and a condenser section containing a refrigerant liquid, said centrifugal compressor including a rotor assembly operatively coupled with a stator assembly, said rotor assembly including structure that defines a flow passage therethrough, said centrifugal compressor including a mixer assembly operatively coupled with said evaporator section, said condenser section and said rotor assembly;transferring said refrigerant liquid from said condenser section to said mixer assembly;transferring said refrigerant gas from said evaporator section to said mixer assembly;using said mixer assembly to mix said refrigerant liquid with said refrigerant gas from said steps of transferring to produce a two-phase refrigerant mixture; androuting said gas-liquid refrigerant mixture through said flow passage of said rotor assembly to provide two-phase cooling of said rotor assembly.2. The method of claim 1 , wherein said centrifugal compressor assembly provided in said step of providing further comprises said stator assembly being operatively coupled with said condenser section ...

Method and apparatus for cooling

A method of calculating net sensible cooling capacity of a cooling unit includes measuring a discharge pressure from of fluid from a compressor and a suction pressure from an evaporator, calculating a condensing temperature of fluid flowing from the compressor and an evaporating temperature of fluid flowing from the evaporator, calculating a mass flow rate of fluid flowing from the compressor, calculating enthalpy of fluid flowing from the compressor, of fluid flowing from the thermal expansion valve, and of fluid flowing from the evaporator, calculating a mass flow rate of fluid flowing through the hot gas bypass valve, and calculating net sensible cooling capacity. Embodiments of cooling units and other methods are further disclosed.

HEAT TRANSFER COMPOSITIONS AND METHODS

Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) HFC-32; (b) HFC-125; (c) HFO-1234yf and/or HFO-1234ze; (d) HFC-134a. In certain non-limiting aspects, such refrigerants may be used as a replacement for R-404A. 1. A heat transfer composition comprising: (a) from about 10% to about 35% by weight of HFC-32; (b) from about 10% to about 35% by weight of HFC-125; (c) from about 0% to about 30% by weight of HFO-1234yf and from greater than 0% to about 30% by weight of HFO-1234ze; (d) from about 10% to about 35% by weight of HFC-134a , with the weight percent being based on the total of the components (a)-(d) in the composition.2. The heat transfer composition of wherein said HFO-1234ze comprises trans-HFO-1234ze.3. The heat transfer composition of comprising from greater than 15% to about 30% by weight of HFC-32.4. The heat transfer composition of comprising from greater than 20% to about 30% by weight of HFC-32.5. The heat transfer composition of comprising from greater than 10% to about 30% by weight of HFC-125.6. The heat transfer composition of comprising from greater than 20% to about 30% by weight of HFC-125.7. The heat transfer composition of having a weight ratio of HFC-32:HFC-125 of from about 0.9:1.2 to about 1.2:0.9.8. The heat transfer composition of comprising from greater than 0% to about 25% by weight of HFO-1234yf.9. The heat transfer composition of comprising from greater than 0% to about 22% by weight of HFO-1234yf.10. The heat transfer composition of comprising from about 1% to about 30% by weight of HFO-1234ze.11. The heat transfer composition of comprising from about 5% to about 30% by weight of HFO-1234ze.12. The heat transfer composition of comprising from greater than 0% to about 25% by weight of HFO-1234yf and from about 1% to about 30% by weight of HFO-1234ze.13. The heat transfer composition of comprising from greater than 0% to about 22% by weight of HFO-1234yf and from about 5% to about 30% ...

SYSTEM AND METHOD FOR LIQUID-SUCTION HEAT EXCHANGE THERMAL ENERGY STORAGE

Disclosed is a method and device for a thermal energy storage liquid-suction heat exchanger (TES-LSHX) for air conditioning and refrigeration (AC/R) applications. The disclosed embodiments allow energy to be stored and aggregated over one period of time, and dispatched at a later period of time, to improve AC/R system efficiency during desired conditions. Not only are the benefits of LSHX stored and aggregated for later use, but when dispatched, the discharge rate can exceed the charge rate thereby further enhancing the benefit of demand reduction to utilities. The disclosed embodiments allow great flexibility and can be incorporated into OEM AC/R system designs, and/or bundled with condensing units or evaporator coils. These TES-LSHX systems can be retrofit with existing systems by installing the product at any point along the existing AC/R system's line set. 1. An integrated refrigerant-based thermal energy storage and cooling system comprising: a condensing unit, said condensing unit comprising a compressor and a condenser;', 'an expansion device connected downstream of said condensing unit;', 'an evaporator connected downstream of said expansion device;, 'a refrigerant loop containing a refrigerant comprising a thermal storage media contained therein;', 'a liquid heat exchanger between said condenser and said expansion device, that facilitates heat transfer between a refrigerant and said thermal storage media;', 'a suction heat exchanger between said evaporator and said compressor that facilitates heat transfer between said refrigerant and said thermal storage media; and,', 'a first valve that facilitates flow of refrigerant from said condenser to said thermal energy storage module or said expansion device., 'a thermal energy storage module comprising2. The system of further comprising:a second valve that facilitates flow of refrigerant from said evaporator to said thermal energy storage module or said compressor.3. The system of further comprising:a refrigerant ...

Multi-Compressor Refrigeration System and Method for Operating It

A refrigeration system () has a first compressor () and a second compressor (). The second compressor has at least a first condition t least partially in parallel with the first compressor along a refrigerant flowpath. A heat rejection heat exchanger () is downstream of the first and second compressors along the refrigerant flowpath. An expansion device () is downstream of the heat rejection heat exchanger along the refrigerant flowpath. A heat absorption heat exchanger () is downstream of the expansion device along the refrigerant flowpath. The first compressor is a variable speed compressor coupled to a variable speed drive (). The second compressor is a fixed speed compressor. 2. (canceled)3. The system of wherein:the second compressor has a larger displacement per revolution than a displacement per revolution of the first compressor.4. The system of wherein:the first compressor and the second compressor are reciprocating compressors.534. The system of in operational condition with the second compressor connected directly to a line voltage () and the first compressor connected to the line voltage via its variable speed drive.6200. A transport system () comprising:{'b': '20', 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the refrigeration system () of ; and'}{'b': 201', '202, 'a refrigerated container () having an interior () containing or in air flow communication with the heat absorption heat exchanger.'}7. (canceled)8. The system of wherein:a displacement per revolution of the second compressor is 110-350% of a displacement per revolution of the first compressor.9. The system of wherein:the first compressor has an induction motor or a permanent magnet motor; andthe second compressor has an induction motor.10. The system of further comprising a controller configured to:{'b': '310', 'at high required capacity (upper range), operate () both the first compressor and the second compressor, the second compressor being operated at a fixed speed; and'}{'b': '318', ...

REFRIGERATION SYSTEM

A refrigeration system using CO2 as a refrigerant includes a receiver having a liquid outlet connected to expansion valves, which are connected to evaporators, which are connected to the suction side of the compressor. The receiver includes a second gas outlet connected to a second pressure reduction device, to reduce the energy consumption in CO2 cooling systems and to protect the compressors against liquid CO2 by heating the suction gas. The second pressure reduction device is connected by tubing to a first heat exchanging device, which is integrated in the receiver, so that gas that is evaporated in the top of a receiver can be used for cooling the liquid part of the same receiver. 1. A refrigeration system primarily using CO2 as refrigerant , which refrigeration system comprises at least one first compressor , which compressor comprises a pressure outlet tube connected to at least one heat rejecting heat exchanger , which heat rejecting heat exchanger is connected to one first pressure reduction device and by tubing further connected to at least one receiver , which receiver comprises at least one first liquid outlet , which outlet is connected by tubing to one or more first pressure reduction devices , such as expansion valves , which expansion valves are connected to at least one first group of evaporators , which evaporators are connected by suction tubing to the suction side of the compressor , which receiver comprises at least one second gas outlet , which second outlet is connected by tubing to a second pressure reduction device , wherein the second pressure reduction device is connected by tubing to a first heat exchanging device , which first heat exchanging device is integrated in the receiver , in which first heat exchanging device the refrigerant is heated , which heated refrigerant is connected to the suction tubing.2. The refrigeration system according to claim 1 , wherein the second pressure reduction device is connected by tubing and combined with ...

Air Conditioning System for Vehicles

Provided is an air conditioning system for vehicles, this air conditioning system being configured in such a way that it is possible to perform air conditioning for separate purposes, such as for cooling a driver, this type of air conditioning being extremely efficient in terms of energy, and that even if part of the air conditioning system is installed in a vehicle cabin, it is possible to meet requirements for securing a space in the vehicle cabin. The aforementioned air conditioning system for vehicles comprises a refrigeration circuit provided with a compressor, a condenser, an expansion means, and an evaporator, and is characterized in that the compressor and the condenser are disposed in an in-vehicle area outside the vehicle cabin, and that the expansion means and the evaporator are locally disposed in one or more selected specific regions in the vehicle cabin, preferably in such a way as to be incorporated into units. 1. An air conditioning system for vehicles having a refrigeration circuit provided with a compressor for a refrigerant , a condenser , an expansion means and an evaporator , wherein said compressor and said condenser are disposed in an in-vehicle area outside a vehicle cabin , and said expansion means and evaporator are locally disposed in one or more specific regions selected in said vehicle cabin.2. The air conditioning system for vehicles according to claim 1 , wherein at least one expansion means and one evaporator are incorporated into a single unit and said unit or units are provided by a number corresponding to a number of said specific region or regions.3. The air conditioning system for vehicles according to claim 2 , wherein an air blower is also incorporated in each of said unit or units.4. The air conditioning system for vehicles according to claim 2 , wherein a heater is also incorporated in each of said unit or units.5. The air conditioning system for vehicles according to claim 1 , wherein pairs of said expansion means and said ...

COOLER AND REFRIGERATING APPARATUS INCLUDING THE SAME

A cooler includes a circular pipe member through which a heating medium circulates, and being in thermal contact with a power module to cool the power module with the heating medium flowing through an interior of the circular pipe member. An axially extending channel formation member between which and an inner circumferential surface of the circular pipe member a narrow channel for the heating medium is formed is provided in the circular pipe member. 1. A cooler including a circular pipe member through which a heating medium circulates , and being in thermal contact with a heat generating component to cool the heat generating component with the heating medium flowing through the circular pipe member , the cooler comprising:a channel formation member which axially extends through an interior of the circular pipe member, and between which and an inner circumferential surface of the circular pipe member a narrow channel for the heating medium is formed.2. The cooler of claim 1 , whereinthe channel formation member is disposed in the circular pipe member such that the narrow channel forms an annular channel extending along the inner circumferential surface of the circular pipe member.3. The cooler of claim 2 , further comprising:a plurality of partitioning walls axially extending through the interior of the circular pipe member and circumferentially dividing the narrow channel.4. The cooler of claim 3 , whereinan axially extending heat transfer plate made of a metal is provided between each adjacent pair of the partitioning walls so as to be connected integrally to the circular pipe member.5. The cooler of claim 3 , whereina turbulent flow accelerator member is provided between each adjacent pair of the partitioning walls.6. The cooler of claim 5 , whereinthe turbulent flow accelerator member includes a plurality of protruding pieces connected integrally to the channel formation member by injection-molding a resin.7. The cooler of claim 3 , whereinthe plurality of ...

Outdoor unit and air conditioner having the same

An outdoor unit allows the position of the service valve to be changed in order to adapt the outdoor unit to various environments in which the outdoor unit is installed. The outdoor unit of an air conditioner includes a body, a compressor disposed inside the body to compress a refrigerant, an outdoor heat exchanger to cause heat exchange between the refrigerant compressed by the compressor and outdoor air, at least one service valve to regulate the refrigerant flowing into the outdoor heat exchanger, and a guide portion provided at the body to guide a positional shift of the service valve.

COOLING APPARATUS

A cooling apparatus having a closed cooling circuit for cooling objects to semi-cryogenic or cryogenic temperatures includes a compressor to compress a gaseous coolant, and from which the coolant exits in a compressed gaseous state, an after-cooler connected downstream from the compressor, whereby the coolant exits largely in gaseous form, a counterflow heat exchanger having a feed line and return line arranged in such a way that the compressed coolant is liquefied in the feed line as the relieved coolant flowing through the return line is being heated. A cooling head that is connected with the feed line and return line. A coolant can flow through the cooling head whereby the coolant evaporates. The cooling head is arranged in a vacuum chamber, which can be joined with a low-pressure source, and is joined by flexible connecting lines with the feed line and return line of the counterflow heat exchanger. 111161314897. A cooling apparatus with a closed cooling circuit for cooling objects to semi-cryogenic or cryogenic temperatures of 230K to 80K , comprising a compressor for compressing a coolant , to which the coolant is supplied in a gaseous state , and from which the coolant exits in a compressed gaseous state , an after-cooler connected downstream from the compressor , from which the coolant exits largely in gaseous form , a counterflow heat exchanger comprising a feed line and return line , which are arranged in such a way that the compressed coolant is liquefied in the feed line as the relieved coolant flowing through the return line is being heated , and a cooling head that is connected with the feed line and return line and has coolant flowing through it , in which the coolant evaporates , characterized in that the cooling head () is arranged in a vacuum chamber () , which can be joined with a low-pressure source , and is joined by flexible connecting lines ( , ) with the feed line and return line ( , ) of the counterflow heat exchanger () , so that the ...

COMPOSITIONS COMPRISING FLUOROOLEFINS AND USES THEREOF

The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential. 148-. (canceled)49. A method for producing cooling in a chiller , said method comprising compressing a composition in a centrifugal compressor , condensing said composition and thereafter evaporating said composition in the vicinity of a body to be cooled; wherein said composition comprises a refrigerant consisting of 1 ,3 ,3 ,3-tetrafluoro-1-propene.50. The method of claim 49 , wherein the chiller is suitable for using HFC-134a or HFC-245fa.51. The method of claim 49 , wherein the chiller is designed for use of HFC-134a or HFC-245fa.52. The method of claim 49 , wherein said composition further comprises an additive selected from the group consisting of lubricants claim 49 , tracers claim 49 , UV dyes claim 49 , solubilizing agents claim 49 , and stabilizers. This application claims the priority benefit of U.S. ProvisionalApplication 60/732,581, filed Nov. 1, 2005 and of U.S. patent application Ser. No. 11/486,791, filed Jul. 13, 2006.The present invention relates to compositions for use in refrigeration, air-conditioning or heat pump systems wherein the composition comprises at least one fluoroolefin. The compositions of the present invention are useful in processes for producing refrigeration or heat, as heat transfer fluids and many other uses.The refrigeration industry has been working for the past few decades to find replacement refrigerants for the ozone depleting chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) being phased out as a result of the Montreal Protocol. The solution for most refrigerant producers has been the commercialization ...

AIR-CONDITIONING APPARATUS

Obtained is an air-conditioning apparatus capable of having a thin low-pressure gas pipe even when a refrigerant with a low refrigerant density at low pressure is used. An air-conditioning apparatus includes a refrigerant circuit connecting a compressor, a heat source side heat exchanger, expansion devices, and use side heat exchangers with pipes and circulating a refrigerant whose density in a saturated refrigerant gas at 0 degrees C. is 35 to 65% of the density of an R410A refrigerant, and supercooling means (supercooling heat exchanger, expansion device, and bypass) making a liquid temperature sent from the heat source side heat exchanger to the expansion devices be 5 degrees C. or less in a cooling operation. 1. An air-conditioning apparatus comprising:a refrigerant circuit connecting a compressor, a heat source side heat exchanger, an expansion device, and a use side heat exchanger with pipes and circulating a refrigerant whose density in a saturated refrigerant gas at 0 degrees C. is 35 to 65% of a density of an R410A refrigerant; andsupercooling means making a liquid temperature of a high-pressure liquid refrigerant sent from the heat source side heat exchanger to the expansion device be 5 degrees C. or less in a cooling operation.2. The air-conditioning apparatus of claim 1 , wherein the supercooling means makes a degree of supercooling of the high-pressure liquid refrigerant be 44 degrees C. or more.3. The air-conditioning apparatus of claim 1 , wherein claim 1 , in a heating operation claim 1 , a liquid temperature of a high-pressure liquid refrigerant sent from the use side heat exchanger to the expansion device is 5 degrees C. or less or a degree of supercooling thereof is 44 degrees C. or more.4. The air-conditioning apparatus of claim 1 , wherein the supercooling means includes a supercooling heat exchanger that exchanges heat between a high-pressure side refrigerant between the heat source side heat exchanger and the expansion device and a low- ...

Tetrafluoropropene compositions and uses thereof

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

AIR CONDITIONER

A refrigerant circuit of an air conditioner includes a compressor unit, an evaporator, and a solenoid valve comprising a flow control mechanism. The operation capacity of the compressor unit is adjusted by changing the number of compressors in operation. The evaporator includes a first heat exchanger section and a second heat exchanger section. A first flow pass of the first heat exchanger section and a second flow pass of the second heat exchanger section are connected to each other in parallel. In the state where the solenoid valve is open, refrigerant flows into both of the first flow pass and the second flow pass. In the state where the solenoid valve is closed, refrigerant flows only to the first flow pass. 1. An air conditioner , comprising:a refrigerant circuit which performs a refrigeration cycle by circulating a refrigerant, for cooling air flowing in an air passage connected to a supply opening of each of a plurality of rooms by the refrigerant, whereinthe refrigerant circuit includesa compressor unit having a plurality of compressors connected to each other in parallel,an evaporator provided at the air passage and having a plurality of heat exchanger sections connected to each other in parallel to heat exchange the refrigerant with the air, anda flow control mechanism configured to change the number of the heat exchanger sections through which the refrigerant passes.2. The air conditioner of claim 1 , whereinthe flow control mechanism changes the number of the heat exchanger sections through which the refrigerant passes, according to an operation capacity of the compressor unit.3. The air conditioner of claim 2 , whereineach of the compressors in the compressor unit has a fixed capacity, the compressor unit is configured such that the operation capacity of the compressor unit is adjusted by changing the number of the compressors in operation, andthe flow control mechanism reduces the number of the heat exchanger sections through which the refrigerant ...

Refrigeration Systems

Refrigeration systems are configured to utilize an operating fluid comprising an activated oil blend. The activated oil blend can comprise one or more precursor oils that are blended in a closed vessel containing a catalyst. Preferred operating fluids also comprise a polar heat transfer fluid such as r-134a, wherein at least some of the polar heat transfer molecules are complexed to a component of the activated oil blend. 1. A refrigeration system comprising:a compressor that moves an operating fluid between a condensor and an evaporator;wherein the operating fluid comprises (a) an activated oil blend, and (b) a polar heat transfer fluid molecule complexed to a component of the oil blend via Van der Waals forces; andwherein the activated oil blend comprises at least a first precursor oil blended in a closed vessel comprising a catalyst.2. The system of claim 1 , wherein the polar heat transfer fluid molecule comprises a hydrohalocarbon.3. The system of claim 1 , wherein the polar heat transfer fluid molecule comprises a hydrofluorocarbon.4. The system of claim 1 , wherein the first precursor oil is selected from the list consisting of walnut oil claim 1 , almond oil claim 1 , sunflower oil claim 1 , and canola oil.5. The system of claim 3 , wherein the hydrofluorocarbon comprises at least 90 wt % of the operating fluid.6. The system of claim 1 , wherein the activated oil blend further comprises a second precursor oil claim 1 , and wherein the second precursor oil is selected from the list consisting of walnut oil claim 1 , almond oil claim 1 , sunflower oil claim 1 , and canola oil.7. The system of claim 1 , wherein the polar heat transfer fluid molecule comprises r-134a claim 1 , known chemically as claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,2-Tetrafluoroethane (CHFCF).8. The system of claim 7 , wherein the r-134a is present in the operating fluid in at least 20 wt %.9. The system of claim 1 , wherein the pressures and concentrations of the operating fluid are such ...

Estimation apparatus of heat transfer medium flow rate, heat source machine, and estimation method of heat transfer medium flow rate

A required-circulated-refrigerant flow-rate calculating portion provided in a chilled-water flow-rate estimation calculation portion calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity. Then, a circulated-chilled-water flow-rate back-calculating portion back-calculates an evaporator-refrigerant flow rate based on the calculated evaporator-refrigerant flow rate and a ratio between a set value of differential pressure between a condenser and the evaporator and a measured value of that differential pressure, back-calculates an evaporator exchanged heat quantity exchanged between the refrigerant and the chilled water at the evaporator from the back-calculated evaporator-refrigerant flow rate, and back-calculates the flow rate of the chilled water.

REFRIGERANTS CONTAINING (E)-1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE

The invention relates to a composition comprising (E)-1,1,1,4,4,4-hexafluorobat-2-ene as a mixture with at least one hydrocarbon, hydrofinorocarbon or fluoroolefin compound having a boiling point less than or equal to 42° C., and also to the use of this composition as a heat transfer fluid. 1. A composition comprising (E)-1 ,1 ,1 ,4 ,4 ,4-hexafluorobut ,ene with at least one compound having a boiling point less than or equal to −12° C. selected from the group consisting of hydrocarbons , hydrofluorocarbons , ethers , hydrofluoroethers , fluoroolefins and mixtures thereof.2. The composition as claimed in claim 1 , wherein the compound is selected from the group consisting of 1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene claim 1 , 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene claim 1 , 3 claim 1 ,3 claim 1 ,3-trifluoropropene claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,2-tetrafluoroethane claim 1 , 1 claim 1 ,1-difluoroethane claim 1 , difluoromethane claim 1 , pentafluoroethane claim 1 , propane and dimethyl ether claim 1 , and mixtures thereof.3. The composition as claimed in claim 1 , consisting of a mixture of:(E)-1,1,1,4,4,4-hexalluorobut-2-ene and a compound selected from the group consisting of 1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 1,1,1,2-tetrafluoroethane, 1,1-difluoroethane, difluoromethane, pentafluoroethane and propane and mixtures thereof.4. (canceled)5. The composition as claimed in claim 1 , wherein the difference between the liquid saturation pressure and the vapor saturation pressure at a temperature of −5′'C is less than or equal to 10% of the liquid saturation pressure.6. The composition as claimed in claim 1 , comprising:from 10% to 50% of (E)-1,1,1,4,4,4-hexafluorobut-2-ene and from 50% to 90% of 1,3,3,3-tetrafluoropropene.7. (canceled)8. A heat-transfer composition comprising the composition as claimed in further comprising one or more additives selected from the group consisting of ...

Energy efficiency of air conditioning system by using dual suction compressor

A method for selectively transferring latent and sensible heat from air in a cooling system of a building structure interior volume that includes at least the steps of: (1) providing a building structure air conditioning system that provides cooling to at least a portion of the interior volume of a building structure and (2) adjusting a ratio of a time coolant flows through the first evaporator to a time coolant flows through the second evaporator such that coolant flows through the first evaporator for more time than the second evaporator when more latent heat is removed from the air and more coolant flows through the second evaporator for more time than the first evaporator when more sensible heat is removed from the air.

Retrofittable thermal storage for air conditioning systems

A system and method to retrofit a building structure having a forced air cooling system with a thermal storage system. The method typically includes the steps of installing a coolant loop that is free of a compressor, and a condenser, where the coolant loop comprises a refrigerant fluid pump and refrigerant fluid conduits that deliver coolant loop refrigerant fluid to a coolant loop evaporator spaced within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway and where the coolant loop is in thermal communication with a thermal energy storage material within a thermal energy thermal storage fluid tank; and activating the coolant loop pump to provide cooling to the coolant loop evaporator thereby cooling air moving in the building air passageway of a building structure.

Fin-coil design for a dual suction air conditioning unit

An evaporator system that includes: a first evaporator coil at a first evaporator temperature and pressure; a second evaporator coil at a second evaporator temperature and pressure that is less than the first evaporator temperature and pressure where the first evaporator and second evaporator are configured to be thermally disjointed; and a plurality of thermally conductive spaced apart evaporator fins having a plurality of spaced apart thermal break portions positioned between the first evaporator coil and the second evaporator coil that thermally disjoin the first evaporator and the second evaporator.

Air conditioning system with multiple-effect evaporative condenser

An air conditioning system includes a multiple effect evaporative condenser, at least one compressor, at least one heat exchanger, an expansion valve, and at least one multiple-effect evaporative condensers. The multiple effect evaporative condenser and the heat exchanger utilize a highly efficient heat exchanging pipe for performing heat exchange between water and refrigerant.

REFRIGERATION SYSTEM WITH PURGE AND ACID FILTER

Refrigeration systems with a purge for removing non-condensables from the refrigerant and an acid filter for remove acid from the refrigerant are provided. The acid filter can be operatively connected to the purge. Optionally, the purge can include a separating device for separating non-condensable gases from condensable refrigerant gases and an acid filter is provided to remove acid from the condensable refrigerant gases. 1. A refrigeration system , comprising:a compressor;a condenser;an expansion device;an evaporator;the compressor, the condenser, the expansion device, and the evaporator are fluidly connected to form a refrigeration circuit;a purge fluidly connected to the condenser to receive a chiller refrigerant flowing through the refrigeration system from the condenser, the purge configured to remove one or more non-condensable gases from the chiller refrigerant; andan acid filter operatively connected to the purge, the acid filter configured to remove one or more acids from the chiller refrigerant.2. The refrigeration system of claim 1 , further comprising a separation device operatively connected to the purge at a downstream position of the purge claim 1 , the separation device configured to receive a mixture from the purge and separate the non-condensable gases and the chiller refrigerant from the mixture.3. The refrigeration system of claim 2 , wherein the acid filter is fluidly connected to an outlet of the separation device and configured to receive at least one of the non-condensable gases and the chiller refrigerant from the separation device and remove the acids from the chiller refrigerant and the non-condensable gases.4. The refrigeration system of claim 2 , wherein the acid filter is fluidly connected to an inlet of the separation device.5. The refrigeration system of claim 1 , wherein the acid filter is disposed within the purge.6. The refrigeration system of claim 2 , wherein the acid filter is disposed within the separation device.7. The ...

REFRIGERATION SYSTEM WITH PURGE USING ENRIVONMENTALLY-SUITABLE CHILLER REFRIGERANT

Refrigeration systems with a purge for removing non-condensables from an environmentally-suitable chiller refrigerant are provided. The refrigeration systems utilize an environmentally-suitable chiller refrigerant with a 100 year direct global warming potential (GWP) of less than 150. The refrigeration systems further include a remover to remove refrigerant-harmful gases from the chiller refrigerant. 1. A refrigeration system , comprising:a compressor;a condenser;an expansion device;an evaporator;the compressor, the condenser, the expansion device, and the evaporator are fluidly connected to form a refrigeration circuit; anda purge fluidly connected to the condenser to receive a chiller refrigerant flowing through the refrigeration system from the condenser, the purge configured to remove non-condensable gases from the chiller refrigerant, and the chiller refrigerant including an environmentally-suitable chiller refrigerant that has a 100 year direct global warming potential (GWP) of less than 150.2. The refrigeration system of claim 1 , wherein the environmentally-suitable chiller refrigerant has a composition comprising:at least one chemical of 1-chloro-3,3,3 trifluoropropene (E), 1-chloro-3,3,3 trifluoropropene (Z), 2-chloro-3,3,3 trifluoropropene, 1,1,dichloro-3,3,3 trifluoropropene, 1,3,3,3 tetrafluoropropene (E), 1,3,3,3 tetrafluoropropene (Z), 1,2 dichloro-3,3,3 trifluoropropene (E), 1,2 dichloro-3,3,3 trifluoropropene (Z), 1,1,3 trichloro-3,3,3 trifluoropropene, 1,2 dichloroethylene (E), 1,2 dichloroethylene (Z), 1,1 dichloroethylene, 1,1,1,4,4,4 hexafluorobutene (Z), 1,1,1,4,4,4 hexafluorobutene (E), 1,1,1,2,3 pentafluoropropane, 1,1,1,3,3 pentafluoropropane, Isopentane, and Pentane.3. The refrigeration system of claim 2 , wherein the amount of the chemical in the environmentally-suitable chiller refrigerant is in a range of about 40% to about 100% by weight.4. The refrigeration system of claim 1 , wherein the chiller refrigerant further comprises at least ...

Unitary heat pump air conditioner

The disclosure relates to a unitary heat pump air conditioner (Unitary HPAC) that includes a refrigerant loop having a condenser, a refrigerant expansion device, and an evaporator hydraulically connected in series. An electrically driven compressor is provided to circulate a two-phase refrigerant through the refrigerant loop to transfer heat from the evaporator to the condenser. The unitary HPAC also includes a cold side chiller configured to hydraulically connect to a cold side coolant loop and is in thermal communication with the evaporator. The unitary HPAC further includes a hot side chiller configured to hydraulically connect to a hot side coolant loop and is in thermal communication with the condenser. The refrigerant loop transfer heat from the cold side chiller to the hot side chiller, thereby cooling the cold side coolant loop and heating the hot side coolant loop. The components of the unitary HPAC are mounted on a common platform.

Air-Conditioning Loop Provided With A Solenoid Valve And Operating As A Heat Pump

An air-conditioning loop, in which a refrigerant flows, is capable of operating as a heat pump. The air-conditioning loop includes a compressor. The air-conditioning loop further includes a first solenoid valve connected to the compressor, to a radiator, and to an external heat exchanger. The radiator is connected to the external heat exchanger via a first pressure-release device and to an evaporator via a second pressure-release device. The evaporator is connected to the compressor. The external heat exchanger is connected to the compressor and to the evaporator via a second solenoid valve. The external heat exchanger, the first solenoid valve, and the second solenoid valve constitute a unitary part. 111. An air conditioning loop () for a motor vehicle in which a coolant fluid circulates , the air conditioning loop () including:{'b': '2', 'a compressor (); and'}{'b': 4', '2', '8', '10, 'a first solenoid valve () connected to the compressor (), to a radiator (), and to an external heat exchanger ();'}{'b': 8', '10', '12', '14', '20, 'wherein the radiator () is connected to the external heat exchanger () via a first expansion device () and is connected to an evaporator () via a second expansion device ();'}{'b': 14', '2, 'wherein the evaporator () is connected to the compressor ();'}{'b': 10', '2', '14', '22', '10', '4', '22, 'wherein the external heat exchanger () is connected to the compressor () and to the evaporator () via a second solenoid valve (): and wherein the external heat exchanger (), the first solenoid valve (), and the second solenoid valve () form a unitary part.'}21124. The air conditioning loop () as claimed in claim 1 , wherein the first expansion device () is integrated into the first solenoid valve ().311420. The air conditioning loop () as claimed in claim 1 , in wherein the evaporator () and the second expansion device () form a unitary block.41220. The air conditioning loop as claimed in claim 1 , wherein the first () and second () expansion ...

Cooling system and method for operating same

An air conditioning system for appropriately controlling the air conditioning capacity by preventing occurrence of cavitation of a refrigerant pump and a method of operating the system are provided. It includes an evaporator for vaporizing a refrigerant by exchanging heat with air in a room to be air-conditioned, a condenser for liquefying a refrigerant gas vaporized by the evaporator, a refrigerant pump for feeding a refrigerant liquid liquefied by the condenser to the evaporator, a refrigerant liquid tank disposed between the condenser and the refrigerant pump to temporarily store the refrigerant liquid liquefied by the condenser, first cold water piping for supplying cold water generated from a heat source machine to the condenser, second cold water piping for supplying the cold water generated from the heat source machine to the refrigerant liquid tank, a refrigerant liquid temperature sensor for measuring a temperature of the refrigerant liquid in the refrigerant liquid tank and a control unit for controlling to supply the cold water desired for condensation of the refrigerant gas to the condenser.

COOLING APPARATUS

A cooling apparatus that cools an HV appliance heat source includes: a compressor for circulating a coolant; a condenser for condensing the coolant; an expansion valve that decompresses the coolant that has been condensed by the condenser; an evaporator for evaporating the coolant that has been decompressed by the expansion valve; and a coolant passageway through which the coolant that moves from an outlet of the condenser toward an inlet of the expansion valve flows. The coolant passageway includes a passageway-forming portion that forms a portion of the coolant passageway. The cooling apparatus further includes a coolant passageway that is disposed in parallel with the passageway-forming portion, and that circulates the coolant via the HV appliance heat source. 1. A cooling apparatus that cools a heat generation source , comprising:a compressor that circulates a coolant;a condenser that condenses the coolant;a decompressor that decompresses the coolant that has been condensed by the condenser;an evaporator that evaporates the coolant that has been decompressed by the decompressor;a first passageway through which the coolant that moves from an outlet of the condenser toward an inlet of the decompressor flows, and which includes a passageway-forming portion that forms a portion of the first passageway, anda second passageway which is connected in parallel with the passageway-forming portion, and which is provided with the heat generation source, and in which the coolant flows via the heat generation source.2. The cooling apparatus according to claim 1 , further comprisinga flow control valve that is disposed on the passageway-forming portion and that adjusts amount of flow of the coolant flowing through the passageway-forming portion and the amount of flow of the coolant flowing through the second passageway.3. The cooling apparatus according to claim 1 , further comprising:a third passageway through which the coolant that moves from an outlet of the compressor ...

Air-conditioning apparatus

In an air-conditioning apparatus equipped with an outdoor unit having outdoor devices including a compressor that compresses a refrigerant, a flow switching valve that switches the flowing direction of the refrigerant, an outdoor heat exchanger that exchanges heat between the refrigerant and outdoor air, a first expansion valve that reduces the pressure of the refrigerant, an excess-refrigerant container that retains an excess refrigerant of the refrigerant, and a second expansion valve that reduces the pressure of the refrigerant; and an indoor unit having an indoor heat exchanger that exchanges heat between the refrigerant and indoor air, the air-conditioning apparatus includes an outdoor-heat-exchanger refrigerant injection port provided in a refrigerant pipe that is directly connected to the outdoor heat exchanger, and an excess-refrigerant-container refrigerant injection port provided in a refrigerant pipe that is directly connected to the excess-refrigerant container.

HIGH EFFICIENCY REFRIGERATOR

A thermal storage container is coupled to a pump for circulating cooled liquid from the thermal storage container in at least one of two circuits. One circuit includes a heat exchanger coupled to the fresh food evaporator for assisting in cooling the fresh food section of the refrigerator or for chilling the liquid. Another circuit includes a sub-cooler between the compressor and condenser for cooling the hot gas output from the compressor before entering the condenser, thereby increasing the efficiency of the system. A three-way valve is coupled from the output pump to couple the stored coolant selectively to one or the other or both of the coolant circuits. 1. A primary cooling system for use within a refrigerator or freezer appliance , comprising;a compressor for a refrigerant;a condenser coupled to said compressor;an evaporator coupled to said condenser; anda secondary cooling loop comprising;a container for holding a liquid thermal mass disposed within the cabinet;a secondary heat exchanger in thermal communication with said evaporator;conduits for coupling said container in fluid communication with said secondary heat exchanger for the transmission of said liquid thermal mass; anda pump coupled to said conduits for circulating said liquid thermal mass from said container to said secondary heat exchanger.2. The primary cooling system as defined in and further including a sub-cooler thermally coupled between said condenser and said evaporator and coupled to said conduits for allowing said liquid thermal mass to flow through said sub-cooler.3. The primary cooling system as defined in wherein said compressor is a linear compressor.4. The primary cooling system as defined in wherein said evaporator is positioned in the refrigerator compartment of a refrigerator/freezer.5. The primary cooling system as defined in wherein said secondary heat exchanger comprises coils surrounding said evaporator and coupled to said conduits.6. The primary cooling system as defined in ...

MODULAR ARCHITECTURE FOR HELIUM COMPRESSORS

A modular architecture for helium compressors is described. 1. An oil lubricated compressor system which compresses a monatomic gas and which comprises:at least a compressor;a water-cooled heat exchanger for cooling oil; anda refrigerant-cooled heat exchanger for cooling the gas, the refrigerant-cooled heat exchanger being coupled to a condensing unit configured to condense and cool the refrigerant in a closed cycle.2. The system of claim 1 , wherein said water-cooled heat exchanger is coupled to a radiator for cooling water circulating therebetween.3. The system of claim 1 , wherein said water-cooled heat exchanger is distinct from said refrigerant-cooled heat exchanger.4. The system of claim 1 , wherein said refrigerant is selected from the group consisting of: Freon claim 1 , R134 claim 1 , and R134a.5. The system of claim 1 , wherein said water comprises a mixture of water and glycol.6. An oil lubricated compressor system which compresses a monatomic gas and which comprises:at least a compressor;a first heat exchanger for cooling the gas; anda second heat exchanger for cooling oil;the first heat exchanger being distinct from the second heat exchanger.7. The system of claim 6 , wherein said second heat exchanger is coupled to said first heat exchanger in series.8. The system of claim 7 , wherein said first heat exchanger and said second heat exchanger coupled in series are configured to couple with a water source; wherein water from the water source is communicated through the first heat exchanger before being communicated through the second heat exchanger that is coupled in series.9. The system of claim 8 , wherein said first heat exchanger comprises one or more helium conduits for communicating gas therethrough; wherein said first heat exchanger is configured to cool said gas within said one or more helium conduits.10. The system of claim 8 , wherein said second heat exchanger comprises one or more oil conduits for communicating oil therethrough; wherein said ...

VEHICLE COOLING SYSTEM

A cooling system includes a compressor that circulates refrigerant; a condenser that condenses the refrigerant; an expansion valve that reduces a pressure of the refrigerant that has been condensed by the condenser; an evaporator that vaporizes the refrigerant that has been reduced in pressure by the expansion valve; a refrigerant passage through which the refrigerant flows from an outlet of the condenser toward an inlet of the expansion valve, and that includes a passage forming portion that forms part of the refrigerant passage; a second passage that is connected in parallel with the passage forming portion; a cooling portion that is provided in the second passage and cools a heat source using the refrigerant; and an expansion valve that is arranged upstream of the cooling portion in the second passage. 1. A cooling system that cools a heat source , comprising:a compressor that circulates refrigerant;a condenser that condenses the refrigerant;a first pressure reducer that reduces a pressure of the refrigerant that has been condensed by the condenser;an evaporator that vaporizes the refrigerant that has been reduced in pressure by the first pressure reducer;a first passage through which the refrigerant flows from an outlet of the condenser toward an inlet of the first pressure reducer, and that includes a passage forming portion that forms part of the first passage;a second passage that is connected in parallel with the passage forming portion;a cooling portion that is provided in the second passage and cools the heat source using the refrigerant from the condenser;a second pressure reducer that is arranged upstream of the cooling portion in the second passage; andanother condenser arranged in the first passage, wherein the passage forming portion is provided between the condenser and the other condenser.2. The cooling system according to claim 1 , further comprising a flow control valve that is arranged in the passage forming portion and regulates a flowrate of ...

AIR CONDITIONER

Provided is an air conditioner. The air conditioner includes a mechanical chamber receiving a compressor for compressing a refrigerant and a water-cooled heat exchanger for heat-exchanging water introduced from the outside and flowing along a water pipe with the refrigerant, an air-cooled heat exchanger disposed on a top surface of the mechanical chamber, the air-cooled heat exchanger being fluidly connected to the compressor, and a fan disposed above the air-cooled heat exchanger. A refrigerant pipe constituting the air-cooled heat exchanger is bent several times along an outer edge of the fan and has a polygonal pillar shape extending in a vertical direction. 1. An air conditioner comprising:a mechanical chamber receiving a compressor for compressing a refrigerant and a water-cooled heat exchanger for heat-exchanging water introduced from the outside and flowing along a water pipe with the refrigerant;an air-cooled heat exchanger disposed on a top surface of the mechanical chamber, the air-cooled heat exchanger being fluidly connected to the compressor; anda fan disposed above the air-cooled heat exchanger,wherein a refrigerant pipe constituting the air-cooled heat exchanger is bent several times along an outer edge of the fan and has a polygonal pillar shape extending in a vertical direction.2. The air conditioner according to claim 1 , wherein the air-cooled heat exchanger comprises:a plurality of main pipes vertically spaced from each other, the plurality of main pipes being bent several times along the outer edge of the fan; andreturn bands disposed on both side ends of the heat exchanger, the return bands connecting ends of the vertically adjacent main pipes to each other.3. The air conditioner according to claim 1 , wherein the plurality of main pipes are bent at least two times or more.4. The air conditioner according to claim 2 , wherein a horizontal section of the air-cooled heat exchanger defines a polygonal plane having a plurality of lines crossing ...

CENTRAL COMPRESSOR VARIABLE REFRIGERANT FLOW AIR CONDITIONING SYSYTEM

An oil-free central compressor variable refrigerant flow air conditioning system structure and method is set out. The system may be a new installation, or retrofit. Refrigerant piping spans are not limited by considerations of entrained oil flow. 1. A central compressor station multipoint vapor compression air-conditioning system , comprising:a physically centralized compressor station having at least one magnetic levitation bearing type compressor requiring no entrained oil in refrigerant fluid compressed by said compressor,a physically centralized condenser package for removal of heat from said refrigerant fluid,a refrigerant fluid piping system having a refrigerated fluid piping system,At least one space to be conditioned,At least one expansion valve located upstream of said evaporators, at least one said evaporator located over 500 feet from said compressor,Wherein refrigerated fluid is delivered from said centralized condenser to said evaporator.2. A retrofitted central compressor station multipoint vapor compression air-conditioning system , comprising:Hey physically centralized compressor station having at least one magnetic levitation bearing type compressor requiring no Entrained oil in refrigerant fluid compressed by said compressor,a physically centralized condenser package for removal of heat from said refrigerant fluid,a refrigerant fluid piping system having a refrigerated fluid piping system,At least one space to be conditioned, said space being previously serviced by a separate dedicated compressor and dedicated condenser, so I dedicated compressor and condenser and being disconnected from said fluid piping system,At least one evaporator serving said space,At least one expansion valve located upstream Of said evaporator,At least one I′ve said evaporators located at least 500 feet from said compressor,Wherein the refrigerated fluid is delivered from said centralized condenser to said evaporator.3. Hey retrofitted central compressor station multipoint ...

ROOFTOP UNIT

A rooftop air conditioning unit, including an air conditioner to produce conditioned air for a conditioned space within a building, the air conditioner having an evaporator, a compressor operably disposed downstream from the evaporator and a condenser operably interposed between the compressor and the evaporator, the rooftop air conditioning unit including a housing, disposed on a roof of the building to house the evaporator, the compressor and the condenser, the housing being formed to define a pathway from an inlet that is fed by exterior and/or interior air to an outlet leading to the conditioned space and a heat reclaim module disposed within the housing and operably coupled to the air conditioner to be receptive of heat produced in the air conditioner for heat exchange operations. 1. A rooftop air conditioning unit , including an air conditioner to produce conditioned air for a conditioned space within a building , the air conditioner having an evaporator , a compressor operably disposed downstream from the evaporator and a condenser operably interposed between the compressor and the evaporator , the rooftop air conditioning unit comprising:a housing, disposed on a roof of the building to house the evaporator, the compressor and the condenser, the housing being formed to define a pathway from an inlet that is fed by exterior and/or interior air to an outlet leading to the conditioned space; anda heat reclaim module disposed within the housing and operably coupled to the air conditioner to be receptive of heat produced in the air conditioner for heat exchange operations.2. The rooftop air conditioning unit according to claim 1 , wherein the heat reclaim module comprises a refrigerant to water heat exchanger.3. The rooftop air conditioning unit according to claim 2 , wherein the refrigerant to water heat exchanger is fluidly coupled to a fluid supply circuit in thermal communication with a heat load of the building.4. The rooftop air conditioning unit according ...

REFRIGERANT CIRCUIT

A refrigeration cycle apparatus () includes: a main refrigerant circuit () having a compressor (), a radiator (), a first expansion mechanism (), a second expansion mechanism (), and an evaporator (); an injection passage () for supplying an intermediate-pressure refrigerant to an injection port of the compressor ; and a water circuit () through which water to be heated in the radiator () flows. The refrigeration cycle apparatus () includes a sub heat exchanger () for cooling the water in the water circuit () by exchanging heat between the refrigerant in the injection passage () and the water to be heated in the radiator (). 111-. (canceled)12. A refrigerant circuit comprising:a compressor that compresses a refrigerant and is provided with an injection portion,a radiator that allows the refrigerant compressed by the compressor to radiate heat,an expansion mechanism that expands the refrigerant cooled by the radiator,an evaporator that evaporates the refrigerant expanded by the expansion mechanism and discharges the evaporated refrigerant toward the compressor,an injection passage connecting the injection portion of the compressor to a branched portion located between the radiator and the expansion mechanism, the injection passage being configured to allow a part of the refrigerant cooled by the radiator to pass through the injection passage,a flow rate regulator that is disposed in the injection passage and regulates a flow rate of the refrigerant, which flows from the branched portion into the injection passage, by adjustment of an opening degree of the flow rate regulator, anda sub heat exchanger disposed between the flow rate regulator and the injection portion of the compressor, the sub heat exchanger being configured to exchange heat between the refrigerant, which has flowed into the injection passage and has passed through the flow rate regulator, and a fluid supplied from outside the refrigerant circuit, the heat-exchanged refrigerant being discharged from ...

Refrigerating cycle system and refrigerator having the same

A refrigerating cycle system and a refrigerator having the same are provided. The refrigerating cycle system includes a condenser, a first capillary tube unit configured to receive refrigerant that has passed through the condensing unit, a gas-liquid separating unit configured to separate the refrigerant that has passed through the first capillary tube unit into liquid refrigerant and gaseous refrigerant, a first evaporator unit configured to receive the liquid refrigerant separated at the gas-liquid separating unit, a liquid refrigerant removal unit configured to receive the gaseous refrigerant separated at the gas-liquid separating unit and a first compressor unit configured to receive the gaseous refrigerant from the liquid refrigerant removal unit. The liquid refrigerant removal unit prevents supplying the separated liquid refrigerant to the first compressor unit.

AIR CONDITIONER

An air conditioner is provided. The air conditioner may include a compressor, a condenser, an evaporator, a receiver storing a portion of a refrigerant passing through the condenser, an accumulator receiving refrigerant stored in the receiver and refrigerant passing through the evaporator to separate gas refrigerant from refrigerant introduced therein and supply the gas refrigerant to the compressor, and a bypass line supplying refrigerant from the receiver to the accumulator. The receiver and the accumulator may be integrally formed or provided as separate parts coupled each other. An outlet end of the bypass line may be connected to an upper portion of the accumulator. Such an arrangement may prevent refrigerant from flowing backward from the accumulator into the receiver. 1. An air conditioner , comprising:a compressor, a condenser and an evaporator connected to form a refrigerating cycle;a receiver storing a portion of refrigerant for the refrigerating cycle;an accumulator configured to receive refrigerant from the receiver and refrigerant from the evaporator, and to separate a gas refrigerant from the refrigerant received therein and supply the gas refrigerant to the compressor; anda bypass line connected between the receiver and the accumulator to supply refrigerant stored in the receiver to the accumulator,wherein the receiver and the accumulator are integrally formed or are provided as separate parts coupled to each other, andwherein an outlet end of the bypass line is connected to an upper portion of the accumulator.2. The air conditioner according to claim 1 , wherein the outlet end of the bypass line extends through an accumulator cover positioned on a top of the accumulator to discharge refrigerant into an interior of the accumulator.3. The air conditioner according to claim 2 , wherein an inlet end of the bypass line extends through a receiver cover positioned on a bottom of the receiver to draw refrigerant from an interior of the receiver.4. The air ...

COMPRESSION CONDENSATE CONDITIONING IN THE FLUE GAS CONDENSER

The invention relates to a method of conditioning a condensate generated in the compression section of a gas purification unit. The invention also relates to system for this method. 1. A method of conditioning condensate generated in the compression section of a gas purification unit , said method comprising:a) compressing carbon dioxide rich flue gas from a gas cooling, condensing and/or cleaning device;b) cooling of the gas below the water dew point;c) recirculating the condensate formed during the cooling in b) comprising carbon dioxide to the inlet of the lower end of the gas cooling, condensing and/or cleaning device;d) introducing the condensate of step c) to the gas cooling, condensing and/or cleaning device; ande) degassing of the condensate whereby the carbon dioxide rich vapor is released into the vapor phase in the lower end of the gas cooling, condensing and/or cleaning device.2. The method of claim 1 , wherein the gas purification unit comprises a post combustion COcapture purification unit.3. The method of claim 2 , wherein the post combustion COcapture purification unit is an amine based absorption process.4. The method of claim 2 , wherein the post combustion COcapture purification unit is performed in a chilled ammonia system.5. The method of wherein step d) comprisesd) introducing the condensate of step c) into a separate compartment arranged within the gas cooling, condensing and/or cleaning device, for vapor disengagement/release and optional conditioning of the condensate.6. The method of comprising wherein step d) comprisesd) introducing the condensate of step c) into the lower part of the gas cooling, condensing and/or cleaning device.7. The method of whereinc) recirculating the condensate of step b) into a vessel for releasing the carbon dioxide rich vapor and conditioning the condensate;d) forwarding the carbon dioxide rich vapor to the flue gas condenser.8. A system for conditioning condensate generated in the compression section of a gas ...

COOLING APPARATUS

A cooling apparatus that cools a charger for charging a storage battery upon reception of a supply of power from a power supply includes: a compressor that circulates a refrigerant; a heat exchanger and a heat exchanger that perform heat exchange between the refrigerant and outside air; an expansion valve that reduces a pressure of the refrigerant; a heat exchanger that performs heat exchange between the refrigerant and air-conditioning air; a cooling unit provided on a path along which the refrigerant flows between the heat exchanger and the expansion valve to cool the charger using the refrigerant; a refrigerant passage through which the refrigerant flows between the compressor and the heat exchanger; a refrigerant passage through which the refrigerant flows between the cooling unit and the expansion valve; and a connecting passage connecting the refrigerant passage and the refrigerant passage. 1. A cooling apparatus that cools a charger for charging a storage battery upon reception of a supply of power from a power supply , comprising:a compressor configured to compress a refrigerant in the cooling apparatus in order to circulate the refrigerant;a first heat exchanger configured to perform heat exchange between the refrigerant and outside air;a second heat exchanger configured to perform heat exchange between the refrigerant and the outside air;a pressure reducer configured to reduce a pressure of the refrigerant;a third heat exchanger configured to perform heat exchange between the refrigerant and air-conditioning air;a first cooling unit provided on a path along which the refrigerant flows between the second heat exchanger and the pressure reducer, the first cooling unit being configured to cool the charger using the refrigerant;a first passage through which the refrigerant flows between the compressor and the first heat exchanger;a second passage through which the refrigerant flows between the first cooling unit and the pressure reducer; anda connecting ...

Turbo Refrigerator

In a turbo refrigerator in which: a gas-phase refrigerant from an evaporator is compressed by a turbo compressor and then condensed by a condenser; the obtained liquid-phase refrigerant is evaporated by the evaporator; and a cooling target is cooled down by evaporation heat of the liquid-phase refrigerant, the compressor is a back-to-back two-stage centrifugal type, and the condenser is provided at a position outside a compressor rear stage so as to overlap the compressor rear stage when viewed from each of an axial direction and a radial direction. With this, the pressure loss of a vapor refrigerant is eliminated, and the deterioration in efficiency can be suppressed. In addition, size reduction can be realized by space saving. Further, an evaporated refrigerant can be smoothly introduced to the condenser with a simple configuration. 1. A turbo refrigerator comprising:a turbo compressor configured to compress a gas-phase refrigerant;a condenser configured to condense the gas-phase refrigerant compressed by the turbo compressor; andan evaporator configured to evaporate a liquid-phase refrigerant obtained by the condenser to cool down a cooling target by evaporation heat of the liquid-phase refrigerant, wherein:the turbo compressor is a centrifugal type configured to cause the gas-phase refrigerant to flow in a radially outward direction; andthe condenser is provided outside the turbo compressor so as to overlap the turbo compressor when viewed from each of an axial direction and radial direction of the turbo compressor.2. The turbo refrigerator according to claim 1 , wherein:the turbo compressor is a two-stage centrifugal type in which a compressor front stage and a compressor rear stage are arranged back-to-back so as to be lined up in the axial direction of the turbo compressor; andthe condenser is provided so as to overlap the compressor rear stage when viewed from each of the axial direction and radial direction of the turbo compressor.3. The turbo refrigerator ...

REFRIGERATION APPARATUS

A refrigeration apparatus (air conditioner (A)) includes: a vapor channel (A) that directs a refrigerant vapor from an evaporator () to a condenser (); a liquid channel (B) that directs a refrigerant liquid from the condenser () to the evaporator (); a first circulation path () that allows the refrigerant liquid retained in the evaporator () to circulate via a first heat exchanger (indoor heat exchanger ()); and a second circulation path () that allows the refrigerant liquid retained in the condenser () to circulate via a second heat exchanger (outdoor heat exchanger ()). A first switching means and a second switching means are provided on the first circulation path () and the second circulation path (). The first switching means and the second switching means are, for example, four-way valves and 1. A refrigeration apparatus comprising:an evaporator that retains a refrigerant liquid and that evaporates the refrigerant liquid therein;a condenser that condenses a refrigerant vapor therein and that retains the refrigerant liquid;a vapor channel that directs the refrigerant vapor from the evaporator to the condenser and that is provided with a compressor;a liquid channel that directs the refrigerant liquid from the condenser to the evaporator;a first circulation path that allows the refrigerant liquid retained in the evaporator to circulate via a first heat exchanger and that is provided with a first pump at a position upstream from the first heat exchanger;a second circulation path that allows the refrigerant liquid retained in the condenser to circulate via a second heat exchanger and that is provided with a second pump at a position upstream from the second heat exchanger;a first four-way valve that is provided on the first circulation path and the second circulation path and that is switched between a first state and a second state, the first state being a state in which the refrigerant liquid pumped from the first pump is directed to the first heat exchanger and ...

Protection and diagnostic module for a refrigeration system

A system is provided and may include a compressor functioning in a refrigeration circuit. An ambient temperature sensor may produce a signal indicative of an ambient temperature. Processing circuitry may calculate an energy efficiency rating of the refrigeration circuit and may generate a relationship of the calculated energy efficiency rating and ambient temperature. The processing circuitry may compare the calculated energy efficiency rating to a base energy efficiency rating to determine if a fault condition exists.

HEAT EXCHANGE CIRCULATORY SYSTEM

A heat exchange circulation system includes a first and a second heat exchangers, an expansion device, and a compressor. There is a first flow path in the first heat exchanger and a second flow path in the second heat exchanger. The expansion pipe of the expansion device is connected to the second gas outlet of the second flow path and the first gas inlet of the first flow path. The compression pipe of the compressor is connected the first gas outlet of the first flow path and the second gas inlet of the second flow path. The first flow path, the compression pipe, the second flow path and the expansion pipe together form a heat exchange circuit. The liquid exists in the first flow path and the second flow path and the gas mixture circulates in the heat exchange circuit. 1. A heat exchange circulation system , comprising:a first heat exchanger which includes a first flow path that has a first gas inlet and a first gas outlet;a second heat exchanger which includes a second flow path that has a second gas inlet and a second gas outlet;an expansion device which includes an expansion pipe that is connected to the second gas outlet and the first gas inlet;a compressor which includes a compression pipe that is connected to the first gas outlet and the second gas inlet; andthe first flow path, the compression pipe, the second flow path and the expansion pipe together forming a heat exchange circuit, the heat exchange circuit having a fluid medium flowing within it, the fluid medium including a liquid and a gas mixture, the liquid existing in the first flow path and the second flow path and gas mixture circulating in the heat exchange circuit.2. The heat exchange circulation system according to claim 1 , wherein the first heat exchanger is a plate type heat exchanger for the heat exchange between the first flow path and a heat absorbing pipe.3. The heat exchange circulation system according to claim 2 , wherein the first heat exchanger includes multiple separated plates ...

Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons

Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.

Cooling system for vehicle

An air-conditioning system for a vehicle may include a cooling unit including a radiator, a cooling fan to introduce air in the radiator, a water pump connected to the radiator through the cooling line, and a reserver tank provided on the cooling line to store a cooling fluid, a first condenser connected to the cooling line between the radiator and the reserver tank such that a cooling fluid is introduced and a refrigerant is introduced through a refrigerant line, and the refrigerant is condensed by heat exchange between the cooling fluid and the refrigerant, and a second condenser serially connected to the first condenser on the refrigerant line such that a condensed liquid phase refrigerant is introduced, and disposed on a front of the radiator such that the refrigerant is condensed by an air cooling type through heat exchange between the refrigerant and an outdoor air introduced on driving.

INTEGRATED AIR CONDITIONING SYSTEM AND CONTROL DEVICE THEREOF

An integrated air conditioning system includes an indirect outdoor air cooler having a first heat exchanger for passing through indoor air as warm air, a second heat exchanger for passing through outdoor air, and piping and a pump for circulating a fluid through the first heat exchanger and the second heat exchanger; an air conditioner having an evaporator, a compressor, and a condenser, for passing the indoor air to convert to cold air; a fan for passing the outdoor air through the second heat exchanger and the condenser; and a control device. The control device sets any mode from among a first mode for performing an individual operation of the indirect outdoor air cooler, a second mode for performing an individual operation of the air conditioner, or a third mode for performing a combined operation of the air conditioner and the indirect outdoor air cooler, to a current operation mode. 1. An integrated air conditioning system , comprising:an indirect outdoor air cooler having a first heat exchanger for passing through indoor air as warm air, a second heat exchanger for passing through outdoor air, and piping and a pump for circulating a fluid through the first heat exchanger and the second heat exchanger;an air conditioner operated on a basis of a compression refrigeration cycle and having an evaporator, a compressor, and a condenser, for passing the indoor air, after having passed through the first heat exchanger, to convert to cold air;a common fan for passing the outdoor air through the second heat exchanger and the condenser; anda control device,wherein the control device sets any mode from among a first mode for performing an individual operation of the indirect outdoor air cooler, a second mode for performing an individual operation of the air conditioner, or a third mode for performing a combined operation of the air conditioner and the indirect outdoor air cooler, to a current operation mode, and executes operation control of the air conditioner and/or the ...

COOLING DEVICE AND METHOD FOR CONTROLLING A COOLING DEVICE

The invention relates to a cooling device, comprising at least one re-generatively operated primary cooling circuit, in particular a solar-powered cooling circuit, wherein the cooling circuit has at least one compressor, at least one condenser, at least one evaporator, at least one cooling space, at least one temperature sensor for measuring the cooling space temperature (T) in the cooling space, and a controller. A desired temperature value (SET) of the cooling space and a comparison temperature value (T) can be stored in the controller. The invention is characterised in that the cooling of the cooling space can be interrupted by the controller and the comparison temperature value (T) can be changed by the controller depending upon the time and/or the cooling space temperature (T). The invention further relates to a method for controlling a cooling device, which is characterised in that the comparison temperature value (T) corresponds to the desired temperature value (SET) when the controller is switched on, and the cooling of the cooling space is interrupted when the actual cooling space temperature (T) has reached the comparison temperature value (T). In this connection, the comparison temperature value (T) is reduced after a predetermined time period (t) by a stored correction value (d), so long as the actual cooling space temperature (T) has not reached the comparison temperature value (T) within the predetermined time period (t). 1. A cooling device comprising at least one regeneratively operated primary cooling circuit , in particular a solar-operated cooling circuit , wherein the cooling circuit has at least one compressor , at least one condenser , at least one evaporator , at least one cooling space , at least one temperature sensor for measuring the cooling space temperature in the cooling space , and a controller , wherein a desired temperature value of the cooling spaces and a comparison temperature value can be stored in the controller ,wherein the ...

FLOW SWITCHING DEVICE AND AIR-CONDITIONING APPARATUS INCLUDING THE SAME

A valve body in each of heat medium flow switching devices has an open portion. When the length from a connection between a first passage pipe and a third passage pipe to a connection between a second passage pipe and the third passage pipe is defined as a casing passage width, a valve body passage width of the open portion in a direction substantially perpendicular to the axis of the valve body is smaller than the casing passage width. 1. An air-conditioning apparatus comprising:a refrigerant circuit that includes a compressor, a first refrigerant flow switching device, a plurality of intermediate heat exchangers, a first expansion device, and a heat-source-side heat exchanger and forms a refrigeration cycle with a heat-source-side refrigerant circulating therethrough; anda heat medium circuit that includes the plurality of intermediate heat exchangers, a pump, and a plurality of use-side heat exchangers through which a heat medium circulates, andin which the heat-source-side refrigerant and the heat medium exchange heat with each other in each of the intermediate heat exchangers, first heat medium flow switching devices that are provided in the heat medium circuit and switch a passage of the heat medium supplied from the plurality of intermediate heat exchangers to the respective use-side heat exchangers; and', 'second heat medium flow switching devices that are provided in the heat medium circuit and switch a passage of the heat medium returning from the respective use-side heat exchangers to the plurality of intermediate heat exchangers,, 'the air-conditioning apparatus comprising a first passage pipe providing a connection port to one of the plurality of intermediate heat exchangers;', 'a second passage pipe providing a connection port to another of the plurality of intermediate heat exchangers;', 'a third passage pipe interposed between the first passage pipe and the second passage pipe and providing a connection port to a corresponding one of the use-side ...

Air conditioner

A refrigerating apparatus including a refrigerant circuit forming a refrigeration cycle using an operating refrigerant selected from among R1234yf single refrigerant, R1234yf mixed refrigerant, R1234ze single refrigerant, and R1234ze mixed refrigerant. The refrigerant circuit has a compressor using refrigeration oil including an extreme pressure additive. An environmentally friendly refrigerant is used and an air conditioner exhibiting high cooling efficiency is provided.

COOLING SYSTEM

A cooling system () that cools an HV apparatus () includes a compressor () that circulates a refrigerant, a heat exchanger () that performs heat exchange between the refrigerant and outside air, an expansion valve () that reduces the pressure of the refrigerant, a heat exchanger () that performs heat exchange between the refrigerant and air-conditioning air, a cooling portion () that cools the HV apparatus () using the refrigerant that flows between the heat exchanger () and the expansion valve (), and a gas accumulator () that retains a gas-phase refrigerant gasified by heat exchange with the HV apparatus () in the cooling portion (). 1. A cooling system that cools a heat generation source , comprising:a compressor that circulates a refrigerant;a first heat exchanger that performs heat exchange between the refrigerant and outside air;a pressure reducer that reduces a pressure of the refrigerant;a second heat exchanger that performs heat exchange between the refrigerant and air-conditioning air;a cooling portion that cools the heat generation source using the refrigerant that flows between the first heat exchanger and the pressure reducer; anda gas accumulator that retains a gas-phase refrigerant gasified by heat exchange with the heat generation source in the cooling portion.2. The cooling system according to claim 1 , wherein the gas-phase refrigerant flows into the gas accumulator and is retained in the gas accumulator during operation of the compressor claim 1 , and the gas-phase refrigerant flows out from the gas accumulator during stoppage of the compressor.3. The cooling system according to claim 1 , further comprisinga discharge portion that forcibly discharges the gas-phase refrigerant from the gas accumulator.4. The cooling system according to claim 1 , further comprisinga check valve that prohibits the gas-phase refrigerant that flows out from the gas accumulator from flowing to the cooling portion.5. The cooling system according to claim 1 , wherein the ...

Refrigerator for vehicle and vehicle

Provided is a refrigerator for a vehicle. The refrigerator for the vehicle may include a cavity or a compartment accommodating a product, a machine room defined in a side of the cavity, a compressor provided at a front side of an internal section of the machine room to compress a refrigerant, a condensation module or assembly disposed at a rear side of the internal section of the machine room to condense the refrigerant, an evaporation module in which the refrigerant condensed in the condensation module is supplied and evaporated and which is disposed in the cavity, and a machine room cover covering the machine room to enable air to be suctioned from a rear side thereof.

DUAL HELIUM COMPRESSORS

This invention relates to oil lubricated helium compressor units for use in cryogenic refrigeration systems, operating on the Gifford McMahon (GM) or Brayton cycle. The objective of this invention is to provide redundancy by having a water cooled compressor manifolded to an air cooled compressor and sensors to detect faults so that an expander can be kept running if there is a failure in either the water or air supply. 1. A method to maintain operation of a Gifford McMahon (GM) expander operating at cryogenic temperatures during a disruption of cooling with either water or air , said system comprising:an air cooled compressor,a water cooled compressor,a gas supply manifold connected to supply sides of the air cooled and water cooled compressors and a high pressure side of the GM expander,a gas return manifold connected to return sides of the air cooled and water cooled compressors and a low pressure side of the GM expander,a plurality of check valves configured to prevent gas from flowing from either compressor into said gas return manifold, anda plurality of sensors to detect critical operating parameters, operating the GM expander with one of the air cooled and water cooled compressors;', 'determining whether operation of the operating compressor has failed; and', 'turning the operating compressor off and turning the other compressor on., 'the method comprising;'}2. The method of wherein said turning the operating compressor off and turning the other compressor on comprise turning the operating compressor off before turning the other compressor on.3. The method of wherein said turning the operating compressor off and turning the other compressor on comprise turning the other compressor on before turning the operating compressor off.4. The method of wherein said determining whether operation of the operating compressor has failed comprises:receiving signals from the sensors; anddetermining which sensors provide critical signals that are used to determine when to ...

WORKING FLUID FOR HEAT CYCLE, COMPOSITION FOR HEAT CYCLE SYSTEM, AND HEAT CYCLE SYSTEM

To provide a working fluid for heat cycle, which has less influence over global warming, which has a small temperature glide, which has a sufficiently low discharge temperature and which is excellent in the cycle performance (refrigerating capacity and coefficient of performance), a composition for a heat cycle system, and a heat cycle system. A working fluid for heat cycle, which contains trifluoroethylene and 1,2-difluoroethylene, a composition for a heat cycle system, and a heat cycle system employing the composition. In the working fluid for heat cycle, the proportion of the total amount of trifluoroethylene and 1,2-difluoroethylene is preferably at least 20 mass % and at most 100 mass %. 1. A working fluid for heat cycle , which contains trifluoroethylene and 1 ,2-difluoroethylene.2. The working fluid for heat cycle according to claim 1 , wherein the proportion of the total amount of trifluoroethylene and 1 claim 1 ,2-difluoroethylene based on the entire amount of the working fluid for heat cycle is at least 20 mass % and at most 100 mass %.3. The working fluid for heat cycle according to claim 1 , wherein the proportion of trifluoroethylene based on the entire amount of the working fluid for heat cycle is at least 57 mass % and at most 90 mass %.4. The working fluid for heat cycle according to claim 1 , wherein the proportion of 1 claim 1 ,2-difluoroethylene based on the entire amount of the working fluid for heat cycle is at most 43 mass %.5. The working fluid for heat cycle according to claim 1 , wherein the proportion of 1 claim 1 ,2-difluoroethylene based on the entire amount of the working fluid for heat cycle is at least 10 mass %.6. The working fluid for heat cycle according to claim 1 , which further contains difluoromethane.7. The working fluid for heat cycle according to claim 6 , wherein the proportion of difluoromethane based on the entire amount of the working fluid for heat cycle is at least 10 mass % and at most 60 mass %.8. The working fluid ...

HEAT PUMP AND METHOD FOR PUMPING HEAT IN A FREE COOLING MODE

A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled. 1. A heat pump , comprising:an evaporator with an evaporator inlet and an evaporator outlet;a compressor for compressing operating liquid evaporated in the evaporator; anda condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser comprises a condenser inlet and a condenser outlet,wherein the evaporator inlet is connected to a return from a region to be heated, andwherein the condenser inlet is connected to a return from a region to be cooled.2. The heat pump according to claim 1 , further comprising:a switch for separating the evaporator inlet from the return from the region to be heated and for connecting the return from the region to be cooled to the evaporator inlet; andfor separating the condenser inlet from the return from the region to be cooled and for connecting the return from the region to be heated to the condenser inlet.3. The heat pump according to claim 2 , further comprising:a first changeover switch whose input is coupled to the return of the region to be cooled;a second changeover switch whose output is coupled to the evaporator inlet;a third changeover switch whose output is coupled to the condenser inlet, anda fourth changeover switch whose input is coupled to the return of the region to be heated.4. The heat pump according to claim 3 ,wherein a first output of the first changeover switch is connected to a first input of the third changeover switch,wherein a second output of the first changeover switch is coupled to a ...

HEAT CYCLE SYSTEM

To provide a heat cycle system with high durability, which employs a working fluid for heat cycle containing trifluoroethylene having a low global warming potential. 1. A heat cycle system , comprising a circulation path in which a working fluid for heat cycle containing trifluoroethylene is circulated from a compressor via a condenser , an expansion valve and an evaporator to the compressor ,wherein the compressor has in its electrical circuit a current-limiting apparatus capable of limiting the current within 6 milliseconds after the heat cycle system enters into an abnormal operation state.2. The heat cycle system according to claim 1 , wherein the current-limiting apparatus is capable of limiting the current within 1 millisecond after the heat cycle system enters into an abnormal operation state.3. The heat cycle system according to claim 1 , wherein the current limiting by the current-limiting apparatus is conducted by terminating a current.4. The heat cycle system according to claim 1 , wherein the current limiting is conducted by suppressing an energy which the working fluid for heat cycle receives from a spark energy generated in the heat cycle system to be 200 J or lower.5. The heat cycle system according to claim 1 , wherein the current-limiting apparatus is at least one member selected from a semiconductor protecting fuse claim 1 , a fast-acting fuse claim 1 , a fast-blow fuse and a current-limiting fuse.6. The heat cycle system according to claim 1 , wherein the working fluid for heat cycle contains trifluoroethylene in an amount of larger than 50 mass %.7. The heat cycle system according to claim 6 , wherein the working fluid for heat cycle contains trifluoroethylene in an amount of larger than 60 mass %.8. The heat cycle system according to claim 6 , wherein the working fluid for heat cycle contains from 60 to 80 mass % of trifluoroethylene and from 20 to 40 mass % of at least one of difluoromethane and 2 claim 6 ,3 claim 6 ,3 claim 6 ,3-tetrafluoro-1- ...

MULTI-MISSION REBREATHER COOLING SYSTEM

An apparatus includes a scrubber bed, a cooling unit operatively connected to the scrubber bed, and a frame configured for a user to carry the apparatus. The cooling unit includes a compressor, a condensing coil operatively connecting the compressor to an expansion valve, and an evaporating coil operatively connecting the expansion valve to the compressor, and a first fluid circulating through the compressor, the condensing coil, the expansion valve, and the evaporating coil. A method of cooling a gas in a rebreather apparatus includes scrubbing an exhalation gas to produce a recycled gas having a lower concentration of carbon dioxide than the exhalation gas, compressing, condensing, expanding, and evaporating a refrigerant in a closed-loop system, transferring heat energy from the recycled gas to the refrigerant, and metering a cooled gas to the user. 1. An apparatus comprising:a scrubber bed; and a compressor;', 'a condensing coil operatively connecting the compressor to an expansion valve;', 'an evaporating coil operatively connecting the expansion valve to the compressor; and', 'a first fluid circulating through the compressor, the condensing coil, the expansion valve, and the evaporating coil; and, 'a cooling unit operatively connected to the scrubber bed, the cooling unit comprisinga frame configured for a user to carry the apparatus.2. The apparatus of claim 1 , the cooling unit further comprising:an inner shell housing the compressor, the condensing coil, and the expansion valve; andan outer shell, wherein the inner shell and the outer shell form an annulus;wherein the evaporating coil substantially surrounds the inner shell.3. The apparatus of claim 2 , further comprising a second fluid circulating from the scrubber bed to the cooling unit claim 2 , and wherein the second fluid flows in the annulus of the cooling unit.4. The apparatus of claim 3 , wherein the second fluid contacts the evaporating coil to transfer heat between the first fluid and the second ...

STAGING ACTIVE COOLING START-UP

A novel process for activating available compressors in multiple compressor air conditioning systems, using an Optimum Stage-Up Process. This process is programmed into a controller as an algorithm, to provide a process for fast compressor start. This process shortens the time to initiate operation of compressors in a multi-compressor air conditioning system required to meet the demand call under any load condition, and hence shortens the time required for the actual sensed interior region air temperature to reach the interior region temperature set point. The Optimum Stage-up Algorithm estimates the number of compressor stages or steps that must be initiated, based on sensed or measured values, to meet the demand at any load condition. These measured values include the sensed temperature of the interior region being cooled, which is compared to the temperature set point of this interior region as well as measured mixed air temperature and supply air temperature. 1. A process for sequentially starting compressors using a controller in a multi-compressor system to rapidly equalize a sensed interior temperature of a region and an interior temperature set point of the region , comprising the steps of:providing a multiple compressor cooling system;providing a controller;measuring the interior region temperature and providing a signal indicative the measured interior region temperature to the controller;comparing the measured interior region temperature to the interior region set point temperature, the controller determining whether a call for cooling is required based on correspondence between the measured temperature and the set point temperature;entering an active cooling mode when the difference in the measured temperature and the set point temperature exceeds a predetermined amount by first calculating a step number based on a mixed air temperature, a measured supply air temperature, a supply fan speed setting, and a constant determined by a refrigerant capacity of ...

Intelligent Compressor Flooded Start Management

A method is provided for managing a flooded start of a compressor in a vapor compression system. Following an initial bump start, a determination is made as to whether working fluid in a liquid state remains in the sump of the compressor. If working fluid in a liquid state remains in the compressor sump, an additional bump start of the compressor is completed, followed by another determination as to whether working fluid in a liquid state still remains in the compressor sump. If working fluid in a liquid state remains in the compressor sump, another bump start of the compressor is initiated and the sequence repeated until no working fluid in the liquid state remains in the compressor sump. A normal start of the compressor may be initiated after determining no working fluid in the liquid state remains in the compressor sump. 1. A method for managing a flooded start of a compressor in a vapor compression system , comprising;initiating an initial bump start of the compressor, wherein the bump start comprises turning the compressor on for a predetermined period of time;terminating the initial bump start;determining whether a working fluid in a liquid state remains in a sump of the compressor; andif working fluid in a liquid state remains in the compressor sump, initiating an additional bump start of the compressor.2. The method as set forth in further comprising;following termination of the additional bump start of the compressor, determining whether working fluid in a liquid state still remains in the compressor sump;if working fluid in a liquid state remains in the compressor sump, initiating another additional bump start of the compressor; andrepeating the aforesaid sequence until no working fluid in the liquid state remains in the compressor sump.3. The method as set forth in further comprising initiating a normal start of the compressor after determining no working fluid in the liquid state remains in the compressor sump.4. The method as set forth in wherein the ...

CONSTANT-TEMPERATURE LIQUID CIRCULATION APPARATUS AND OPERATION METHOD THEREOF

An operation method of a constant-temperature liquid circulation apparatus includes: performing control such that the fan is not activated, or is activated to maintain a minimum rotation speed when a refrigerant pressure measured by the pressure sensor does not reach a reference pressure region after the compressor is activated; controlling the refrigerant pressure by performing inverter control on a rotation speed of the fan when the refrigerant pressure reaches the reference pressure region; and controlling a rotation speed of the compressor to be reduced from a high rotation speed which is a rotation speed during a steady operation while maintaining the rotation speed of the fan at a maximum rotation speed when the refrigerant pressure continues to further rise and exceeds an upper limit value even after the rotation speed of the fan reaches the maximum rotation speed. 1. A constant-temperature liquid circulation apparatus comprising:a constant-temperature liquid circuit supplying a temperature-adjusted constant-temperature liquid to a load;a refrigeration circuit adjusting a temperature of the constant-temperature liquid by heat exchange of the constant-temperature liquid with a refrigerant; anda controller controlling the entire apparatus,wherein the refrigeration circuit includes:a compressor compressing a gaseous refrigerant to change the refrigerant into a high-temperature and high-pressure gaseous refrigerant;an air-cooling condenser cooling the high-temperature and high-pressure gaseous refrigerant sent from the compressor to change the refrigerant into a high-pressure liquid refrigerant;a fan forcing cooling air to flow into the condenser;an expansion valve expanding the high-pressure liquid refrigerant sent from the condenser to change the refrigerant into a low-temperature and low-pressure liquid refrigerant;an evaporator evaporating the low-temperature and low-pressure liquid refrigerant sent from the expansion valve by heat exchange with the constant- ...

REFRIGERATING MACHINE WORKING FLUID COMPOSITION AND REFRIGERANT OIL

A working fluid composition for a refrigerating machine of the invention comprises a refrigerant comprising difluoromethane and an unsaturated fluorinated hydrocarbon wherein a mass of the difluoromethane/the unsaturated fluorinated hydrocarbon is 95/5 to 10/90, and a refrigerating machine oil comprising at least one base oil selected from among polyol esters with a carbon/oxygen molar ratio of 3.2 to 5.8 and polyvinyl ethers with a carbon/oxygen molar ratio of 3.2 to 5.8. 1. A working fluid composition for a refrigerating machine comprising:a refrigerant comprising difluoromethane and an unsaturated fluorinated hydrocarbon wherein a mass ratio of the difluoromethane/the unsaturated fluorinated is 95/5 to 10/90, anda refrigerating machine oil comprising at least one base oil selected from among polyol esters with a carbon/oxygen molar ratio of 3.2 to 5.8 and polyvinyl ethers with a carbon/oxygen molar ratio of 3.2 to 5.8.2. A working fluid composition for a refrigerating machine according to claim 1 , wherein the total of the difluoromethane and the unsaturated fluorinated hydrocarbon in the refrigerant is 80 mass % or greater.3. A working fluid composition for a refrigerating machine according to claim 1 , wherein the mass ratio of the refrigerant/the refrigerating machine oil is 90/10 to 30/70.4. A working fluid composition for a refrigerating machine according to claim 1 , wherein the mass ratio of the difluoromethane/the unsaturated fluorinated hydrocarbon is 90/10 to 50/50.5. A working fluid composition for a refrigerating machine according to claim 1 , wherein the unsaturated fluorinated hydrocarbon is fluoropropene.6. A working fluid composition for a refrigerating machine according to claim 1 , wherein the base oil is a polyol ester with a carbon/oxygen molar ratio of 3.2 to 5.8 claim 1 , and the polyol ester is an ester synthesized from a C4 to C9 fatty acid and a C4 to C12 polyhydric alcohol.8. A refrigerating machine oil claim 1 , comprising at least one ...

Control Valve For A Variable Displacement Compressor

In a control valve, the spring load of a spring, which biases a main valve element in a valve opening direction, is regulated, for instance. This allows a range of suction pressures Ps, where a main valve and a sub-valve are simultaneously closed until a sub-valve element is lifted from a sub-valve seat after a main valve element has been seated on a main valve seat, to be set as a deadband. The control valve is configured such that the value of a suction pressure Ps with which to open the sub-valve after the closing of the main valve and the pressure values at which the deadband takes place are set variably by the setting of a value of current supplied to the solenoid. 1. A control valve for a variable displacement compressor for varying a discharging capacity of the compressor for compressing refrigerant led into a suction chamber and discharging the compressed refrigerant from a discharge chamber , by regulating a flow rate of the refrigerant led into a crankcase from the discharge chamber , the control valve comprising: a discharge chamber communication port that communicates with the discharge chamber;', 'a crankcase communication port that communicates with the crankcase;', 'a suction chamber communication port that communicates with the suction chamber;', 'a main passage that communicates between the discharge chamber communication port and the crankcase communication port; and', 'a sub-passage that communicates between the crankcase communication port and the suction chamber communication port;, 'a body havinga main valve seat provided in the main passage;a main valve element configured to open and close a main valve by touching and leaving the main valve seat;a power element configured to supply a drive force in a valve opening direction to the main valve element according to a displacement amount of a pressure-sensing member, the power element including the pressure-sensing member for sensing a predetermined pressure-to-be-sensed and developing a ...

REFRIGERATOR, REFRIGERATOR OIL, WORKING FLUID COMPOSITION FOR REFRIGERATOR

One aspect of the present invention is a refrigerating machine including a refrigerant circulation system including a compressor, a condenser, an expansion mechanism, and an evaporator, and the refrigerant circulation system being filled with a refrigerant and a refrigerating machine oil, wherein the refrigerating machine oil contains: a first base oil having a compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 1 to 80% by mass; and a second base oil having a kinematic viscosity at 40° C. lower than the first base oil and having a narrower compatible region with the refrigerant than the first base oil. 1. A refrigerating machine comprising a refrigerant circulation system comprising a compressor , a condenser , an expansion mechanism , and an evaporator , and the refrigerant circulation system being filled with a refrigerant and a refrigerating machine oil , whereinthe refrigerating machine oil comprises:a first base oil having a compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 1 to 80% by mass; anda second base oil having a kinematic viscosity at 40° C. lower than the first base oil and having a narrower compatible region with the refrigerant than the first base oil.2. The refrigerating machine according to claim 1 , wherein the first base oil has a compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 1 to 5% by mass or 50 to 80% by mass.3. The refrigerating machine according to claim 1 , wherein the second base oil has no compatible region with the refrigerant in a range of 30° C. or lower and an oil ratio of 10 to 40% by mass.4. The refrigerating machine according to claim 1 , wherein the refrigerating machine oil has no compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 10 to 40% by mass claim 1 , and has a compatible region with the refrigerant ...

REFRIGERATION CYCLE APPARATUS

Provided is a refrigeration cycle apparatus configured to perform a heating operation and a simultaneous heating and hot-water supply operation. The refrigeration cycle apparatus is configured to execute an operation mode circulating refrigerant through, in order, a discharge outlet of a compressor, a first heat exchanger, an expansion device, a second heat exchanger provided to a water tank, and a suction inlet of the compressor, and causing the refrigerant flowing through the second heat exchanger to evaporate by heat generated by a heat source provided to the water tank. 1. A refrigeration cycle apparatus , comprising:a water tank;a heat source provided to the water tank and configured to heat water stored in the water tank; and a compressor,', 'a first heat exchanger,', 'a first expansion valve provided downstream of the first heat exchanger in a refrigerant flow direction, the downstream being in an operation in which the first heat exchanger serves as a condenser, and', 'a second heat exchanger provided to the water tank and configured to exchange heat with the water stored in the water tank,, 'a refrigeration cycle including'}the refrigeration cycle apparatus being configured to execute an operation mode circulating refrigerant through, in order, a discharge outlet of the compressor, the first heat exchanger, the first expansion valve, the second heat exchanger, and a suction inlet of the compressor, and causing the refrigerant flowing through the second heat exchanger to evaporate by heat generated by the heat source.2. The refrigeration cycle apparatus of claim 1 , wherein the refrigeration cycle further includes:a third heat exchanger; a first passage, by which the third heat exchanger and the discharge outlet of the compressor communicate with each other and by which the second heat exchanger and the suction inlet of the compressor communicate with each other, and', 'a second passage, by which a refrigerant flow path is formed between the third heat ...

Refrigeration Circuit and Method for Operating a Refrigeration Circuit

The invention relates to a refrigeration circuit having a mono- or multi-component refrigerant circulating therein, said refrigeration circuit comprising, in the direction of flow, a condenser, a collecting container, a relief device connected upstream of an evaporator, an evaporator and a compressor unit with single-stage compression. According to the invention, there is an intermediate relief device (a) arranged between the condenser () and the collecting container (). Furthermore, there is disclosed a method of operating a refrigeration device in which pressure relief of the refrigerant to an (intermediate) pressure of 5 to 40 bar is effected in the intermediate relief device (a) arranged between the condenser () and the collecting container (). 1. A refrigeration circuit having a refrigerant , especially CO2 , circulating therein , said refrigeration circuit enabling a transcritical overcritical operation , said refrigeration circuit comprising , sequentially in the direction of flow:{'b': '1', 'a condenser/gas cooler ();'}an intermediate relief device (a), relieving downstream pressure to an intermediate pressure of 5-40 bar;{'b': '3', 'a collecting container () having a gas space;'}a relief device (b, c);{'b': 2', '3, 'an evaporator (E, E); and'}{'b': 6', '2', '3', '5, 'a compressor unit () having an input connected to the evaporator (E, E) by a suction line (), wherein{'b': 3', '6, 'the gas space of the collecting container () is connected or connectible to the input of the compressor unit ();'}{'b': 11', '12', '3', '6, 'a relief valve (e) is in the connection line (, ) between the gas space of the collecting container () and the input of the compressor unit ();'}{'b': 5', '3, 'a heat exchanger/subcooler (E) is between the collecting container () and the relief device (b, c); and'}{'b': 3', '5', '3', '11', '12, 'in operation the refrigerant drawn off the collecting container () is subcooled in the heat exchanger/subcooler (E) with respect to the flash gas ...

Refrigeration Circuit and Method for Operating a Refrigeration Circuit

The invention relates to a refrigeration circuit having a mono- or multi-component refrigerant circulating therein, said refrigeration circuit comprising, in the direction of flow, a condenser, a collecting container, a relief device connected upstream of an evaporator, an evaporator and a compressor unit with single-stage compression. According to the invention, there is an intermediate relief device (a) arranged between the condenser () and the collecting container (). Furthermore, there is disclosed a method of operating a refrigeration device in which pressure relief of the refrigerant to an (intermediate) pressure of 5 to 40 bar is effected in the intermediate relief device (a) arranged between the condenser () and the collecting container (). 2111056. The refrigeration circuit of claim 1 , wherein the line () from the further compressor unit () joins the suction line () at a position before the compressor unit ().3. The refrigeration circuit of claim 1 , wherein the intermediate relief device (a) is configured to relieve the downstream pressure to an intermediate pressure of 5-40 bar.41094. The refrigeration circuit of claim 1 , wherein the second compressor unit () is supplied via the suction line () with refrigerant evaporated in the freezing cold consumer (E).511123623. The refrigeration circuit of claim 1 , wherein the line ( claim 1 , ) connecting the gas space of the collecting container () to the input of the compressor unit () bypasses the evaporator (E claim 1 , E).6. The refrigeration circuit according to claim 1 , wherein the refrigerant comprises CO2.713. The refrigeration circuit according to claim 1 , wherein a heat exchanger (E) is connected upstream of the collecting container ().812131. The refrigeration circuit according to claim 7 , wherein the heat exchanger (E) is connected or connectible ( claim 7 , ) with its input side to the output of the condenser/gas cooler ().9. The refrigeration circuit according to claim 7 , wherein:{'b': 2', '1', ...

TEMPERATURE CONTROL SYSTEM WITH PROGRAMMABLE ORIT VALVE

A temperature control system employing a two-phase refrigerant and a compressor/condenser loop is disclosed wherein a two phase refrigerant condenses within the load, the system including a thermo-expansion valve that simultaneously allows refrigerant flow through the thermo-expansion valve and regulates a temperature of the refrigerant in its two phase state ahead of the thermo-expansion valve, and wherein a flow through the thermo-expansion valve occurs only after a pressure and temperature upstream of the thermo-expansion valve reaches a final temperature and pressure. 1. A temperature control system employing a two-phase refrigerant and a compressor/condenser loop having an input and output for circulating refrigerant at a controllable temperature to and from a load evaporator having input and output terminals and a known thermal capacity , the temperature control system including a subsidiary flow circuit for enhancing the performance of the system , comprising:a subsidiary heat exchanger coupled between the flow from the output of the compressor/condenser loop to the load evaporator input, said subsidiary heat exchanger having a first flow path including an input receiving flow from the compressor/condenser loop and an output therefrom coupled to the evaporator input, the subsidiary heat exchanger also including a second flow path in parallel thermal exchange relation along the length of the first flow path, and an output from the subsidiary heat exchanger coupled to the compressor input,the system further includes a thermo-expansion valve disposed in the first flow path between the subsidiary heat exchanger and the input to the load evaporator, a fluid sensing device at the exit to the thermo-expansion valve for sensing flow through the thermo-expansion valve, a capacitor for collecting condensed fluid upstream of the thermo-expansive valve, andwherein refrigerant condenses within the load until the thermo-expansion valve simultaneously allows refrigerant ...

STATOR CORE AND COMPRESSOR

A stator core of an electric motor includes a core body, a slot, and an insulating member. The insulating member is integrated with the core body and has a linear expansion coefficient different from the core body. The insulating member includes, at a peripheral wall portion, a plurality of contact portions extending throughout a cylinder axial direction of the stator core and being in contact with the peripheral wall portion, and a noncontact portion positioned between adjacent ones of the contact portions. The noncontact portion extends throughout the cylinder axial direction and is not in contact with the peripheral wall portion. The peripheral wall portion has an inner peripheral wall portion forming a peripheral wall of the slot, and an outer peripheral wall portion forming an outer peripheral wall of the core body. The insulating member is located at at least one of the inner and outer peripheral wall portions. 1. A stator core of an electric motor , the stator core comprising: a back yoke with a cylindrical shape, and', 'a plurality of teeth extending from the back yoke radially inward of the stator core;, 'a core body having'}a slot located between adjacent ones of the teeth; andan insulating member integrated with the core body, the insulating member having a linear expansion coefficient different from a linear expansion coefficient of the core body, a plurality of contact portions extending throughout a cylinder axial direction of the stator core and being in contact with the peripheral wall portion, and', 'a noncontact portion positioned between adjacent ones of the contact portions, the noncontact portion extending throughout the cylinder axial direction and not being in contact with the peripheral wall portion,, 'the insulating member including, at a peripheral wall portion forming a peripheral wall of the core body,'} an inner peripheral wall portion forming a peripheral wall of the slot, and', 'an outer peripheral wall portion forming an outer ...

Variable economizer injection position

A compressor includes a bore, a rotor disposed within the bore, a compressor inlet, and a compressor outlet. The compressor further includes a compression chamber defined between the bore and the rotor, wherein a volume of the compression chamber gradually reduces from the compressor inlet to the compressor outlet. The compressor includes an economizer. The economizer is fluidically connected to the compression chamber. The economizer is configured to inject a working fluid into the compression chamber at an injection position. The injection position is changeable according to a working condition of the compressor.

REFRIGERATION RACK MONITOR

Devices, methods, systems, and computer-readable media for a refrigeration rack monitor are described herein. One or more embodiments include a refrigeration system monitor, comprising a computing device with a memory storing instructions executable by a processor to: monitor real time performance metrics for a refrigeration system, wherein the real time performance metrics are received from temperature sensors, pressure sensors, and power sensors coupled to the refrigeration system, compare the real time performance metrics to a performance curve of devices associated with the refrigeration system, and generate health information for the devices associated with the refrigeration system based on the comparison. 1. A refrigeration system monitor , comprising a computing device with a memory storing instructions executable by a processor to:monitor real time performance metrics for a refrigeration system, wherein the real time performance metrics are received from temperature sensors, pressure sensors, and power sensors coupled to the refrigeration system;compare the real time performance metrics to a performance curve of devices associated with the refrigeration system; andgenerate health information for the devices associated with the refrigeration system based on the comparison.2. The refrigeration system monitor of claim 1 , wherein the devices associated with the refrigeration system includes a compressor.3. The refrigeration system monitor of claim 2 , wherein the temperature sensors claim 2 , pressure sensors claim 2 , and power sensors are coupled to the compressor to monitor real time performance of the compressor.4. The refrigeration system monitor of claim 1 , wherein the performance curve is an original equipment manufacturer (OEM) performance curve for a compressor associated with the refrigeration system.5. The refrigeration system monitor of claim 1 , wherein the health information indicates a probability of failure for the devices associated with the ...

REFRIGERATION CYCLE APPARATUS

A refrigeration cycle apparatus includes a refrigeration cycle circuit that includes a plurality of load-side heat exchangers and a plurality of indoor units that accommodate the plurality of load-side heat exchangers. Each of the plurality of indoor units includes an air-sending fan. At least one of the plurality of indoor units includes a refrigerant detection unit. When refrigerant is detected by the refrigerant detection unit included in any one of the plurality of indoor units, the air-sending fans included in all of the plurality of indoor units operate.

COOLING SYSTEM OF A REFRIGERATOR AND SUCTION SYSTEM FOR A COMPRESSOR FLUID

The present invention relates to a cooling system of a refrigerator, particularly of a refrigerator including a refrigeration compartment and a freezer comprising a compressor attached to at least one condenser by a segment of a refrigerant tube, wherein a first refrigerant line leaves from the condenser and returns to the compressor, and a second refrigerant line leaves from the condenser and returns to the compressor. In the preferred embodiment of the present invention, the compressor has at least two suction inlets, wherein the first refrigerant line is connected to the first inlet and the second refrigerant line is connected to the second inlet, and both inlets have each a suction valve. In the optional embodiment of the present invention, the fluid compressor comprises at least one fluid selection device directly connected to the at least one suction inlet, and the fluid selection device receives at least two supply lines, and is able to selectively switch pressurized fluid from one of them, to the suction inlet of the fluid compressor. 118-. (canceled)197111567891011112131415. A cooling system of a refrigerator , particularly of a refrigerator including a refrigeration compartment () and a freezer () , a compressor () an expansion device () and an evaporator () arranged in the refrigeration compartment () , said second line () sequentially carrying an expansion device () and an evaporator () arranged in the freezer () , characterized by the fact that the compressor () has at least two suction inlets ( , ) both inlets have each a suction valve ( , ); and{'b': 14', '12, 'suction valve () of the first suction inlet () is a remotely actuated valve, the remotely actuated valve is a solenoid valve;'}{'b': 15', '13, 'suction valve () of the second suction inlet () is a mechanically operable valve; and'}{'b': 14', '15, 'the first and second suction valves (, ) operate in an alternate manner.'} The present invention relates to a cooling system of a refrigerator, ...

COMPRESSOR AND AIR CONDITIONING APPARATUS USING THE SAME

An air conditioning apparatus including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve to depressurize a refrigerant. The refrigerant is formed of hydro fluorocarbon (HFC). The compressor includes a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor, and the oil contains a carbon nanoparticle. Even when an HFC-based refrigerant producing high discharge temperature in a compressor is used, deterioration of the compressor due to the high temperature is prevented. In addition, by lowering the operational temperature of the compressor, the reliability and performance of the compressor using the HFC-based refrigerant and the air conditioning apparatus using the same may be enhanced. 1. An air conditioning apparatus comprising:a compressor to compress a refrigerant;an outdoor heat exchanger to perform heat exchange between outdoor air and the refrigerant;an indoor heat exchanger to perform heat exchange between indoor air and the refrigerant; andan expansion valve to depressurize the refrigerant,wherein the refrigerant is formed of hydrofluorocarbon (HFC);the compressor comprises a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit through a rotating shaft connected to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor; andthe oil contains a carbon nanoparticle.2. The air conditioning apparatus according to claim 1 , wherein the refrigerant comprises methylene fluoride claim 1 , the percentage of the methylene fluoride being at least 40%.3. The air conditioning apparatus according to claim 2 , wherein the refrigerant further ...

Electrochemical Heat Transfer System

A heat transfer system includes a working fluid and an electrochemical compressor. The working fluid is made up of a polar solvent that primarily acts as a condensable refrigerant and hydrogen that primarily acts as an electrochemically-active component. The electrochemical compressor includes an inlet fluidly coupled to an evaporator to receive the working fluid; an outlet fluidly coupled to a condenser; and one or more electrochemical cells electrically connected to each other through a power supply. Each electrochemical cell includes a gas pervious anode, a gas pervious cathode, and an electrolytic membrane disposed between and in intimate electrical contact with the cathode and the anode to pass the working fluid.

Phase Transition Air Cooling System Utilizing a Water Sub-Cooler for Chilling Liquid Refrigerant

A traditional refrigeration system including a compressor, condenser and evaporator and expansion valve that utilizes an additional sub-cooler downstream of the condenser for cooling liquid refrigerant prior to the refrigerant being provided to the evaporator for increased system efficiency. The sub-cooler can utilize existing groundwater, particularly water with a large amount of dissolved materials such as naturally occurring sea water, to provide for the sub-cooling effect with only a modicum of additional energy use. 1. An air cooling system comprising:a compressor;a condenser;a refrigerant, said compressor compressing said refrigerant in said condenser from a gas to a liquid state;an evaporator, said refrigerant in said evaporator absorbing heat to phase transition from a liquid to a gas; and an exchanger; and', 'a container including a liquid bath which is in thermal contact with said exchanger;, 'a sub cooler, said sub cooler comprisingwherein, when said refrigerant is in said liquid state, said refrigerant is fed into said exchanger within said liquid bath, said liquid bath cooling said refrigerant; andwherein, after said refrigerant leaves said exchanger, it is provided to said evaporator.2. The cooling system of wherein said liquid bath is corrosive.3. The cooling system of wherein said liquid bath comprises salt water.4. The cooling system of wherein said exchanger is comprised of marine grade stainless steel.5. The cooling system of wherein said marine grade stainless steel is coated with a polymer.6. The cooling system of wherein said container is placed underground.7. The cooling system of further comprising a sensor attached to said exchanger.8. The cooling system of further comprising a thermostat for controlling said cooling system.9. The cooling system of wherein said thermostat is connected to the Internet. This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/717,453, filed Oct. 23, 2012, the entire disclosure of ...

COOLING SYSTEM

A cooling system () includes: a compressor () that circulates refrigerant; a heat exchanger () and a heat exchanger () that carry out heat exchange between refrigerant and outside air; a decompressor () that decompresses refrigerant; a heat exchanger () that carries out heat exchange between refrigerant and air-conditioning air; a cooling portion () that is provided in a path of refrigerant flowing between the heat exchanger () and the heat exchanger () and that uses refrigerant to cool a heat generating source (); a first line () through which refrigerant circulates between the cooling portion () and the heat exchanger (); a second line () through which refrigerant circulates between the heat exchanger () and the compressor (); and an internal heat exchanger () in which refrigerant that circulates through the first line () and refrigerant that circulates through the second line () exchange heat with each other. 1. A cooling system for cooling a heat generating source , comprising:a compressor configured to circulate refrigerant;a first heat exchanger and a second heat exchanger configured to carry out heat exchange between the refrigerant and outside air;a decompressor configured to decompress the refrigerant;a third heat exchanger configured to carry out heat exchange between the refrigerant and air-conditioning air;a cooling portion provided in a path of the refrigerant flowing between the first heat exchanger and the second heat exchanger, the cooling portion configured to use the refrigerant to cool the heat generating source;a first line through which the refrigerant flows between the cooling portion and the second heat exchanger;a second line through which the refrigerant flows between the third heat exchanger and the compressor; andan internal heat exchanger in which the refrigerant that flows through the first line and the refrigerant that flows through the second line exchange heat with each other.2. The cooling system according to claim 1 , whereinthe ...

Heat transfer compositions having improved miscibility with lubricating oil

A composition including 2,3,3,3-tetrafluoropropene and a lubricating oil including a polyalkylene glycol and a polyol ester, the polyol ester content in the lubricating oil being less than or equal to 25%. A method of lubricating a vapor compression circuit, the method including using a mixture including a polyalkylene glycol and a polyol ester as lubricating oil in the vapor compression circuit, in combination with a heat transfer fluid comprising 2,3,3,3-tetrafluoropropene, the content of polyol ester in the lubricating oil being less than or equal to 25%. Further, the use of said composition in methods for heating or cooling.

AIR CONDITIONING SYSTEMS WITH MULTIPLE TEMPERATURE ZONES FROM INDEPENDENT DUCTING SYSTEMS AND A SINGLE OUTDOOR UNIT

A high-efficiency air conditioning system for conditioning a plurality of zones within an interior of a building that includes: at least two independent ductwork systems within a building wherein each independent ductwork system directs heating and cooling to one zone within the building; a single outdoor unit a refrigerant flow pathway having a common refrigerant flow path portion, a first divergent flow path, and a second divergent flow path; at least one throttling device and at least a first indoor air handling unit providing cooling to a first independent ductwork system and a second indoor air handling unit providing cooling to a second indoor ductwork system. The compressor is incapable of simultaneously supplying both the first evaporator and the second evaporator at their full cooling capacity. 1. A high-efficiency air conditioning system for conditioning a plurality of zones within an interior of a building , the air conditioning system comprising:at least two independent ductwork systems within a building wherein each independent ductwork system directs heating and cooling to one zone within the building;a single outdoor unit comprising:a compressor;a condenser; anda condenser fan associated with the condenser that moves air to cool the condenser;a refrigerant flow pathway comprised of a plurality of refrigerant conduits having a common refrigerant flow path portion and at least two divergent flow path portions, a first divergent flow path that delivers refrigerant to a first evaporator and a second divergent flow path that delivers refrigerant to a second evaporator such that the first evaporator and second evaporator are in parallel with one another;at least one throttling device wherein a throttling device is positioned along a common flow path when a single throttling device is used and a first throttling device is positioned along the first divergent flow path and a second throttling device is positioned along the second divergent flow path when two ...

Split air conditioning system with a single outdoor unit

A split air conditioning system for conditioning a plurality of zones within a single living area of a building, that includes a single outdoor unit; a refrigerant flow pathway made up of a plurality of refrigerant conduits having a common refrigerant flow path portion and at least two divergent flow path portions, a first divergent flow path and a second divergent flow path and the first evaporator and second evaporator are in parallel with one another; at least one throttling device; a portioning device configured to selectively and proportionately regulate the flow of a refrigerant fluid to the first evaporator and the second evaporator, respectively where the compressor is configured to be capable of simultaneously driving both the first evaporator and the second evaporator at their full cooling capacity.

DEEP FREEZER

An embodiment of the present invention relates to a deep freezer. A deep freezer according to an embodiment of the present invention comprises a plurality of heat exchangers installed to an inlet pipe and performing a heat exchange of a mixed refrigerant suctioned into a compressor. The mixed refrigerant comprises: a high temperature refrigerant which is one selected from among butane (N-butane), 1-butene, and isobutane; and a low temperature refrigerant consisting of ethylene. 1. A deep freezer comprising:a compressor for compressing a mixture of two or more refrigerants;a condenser for condensing the refrigerant mixture compressed in the compressor;an expansion device for decompressing the refrigerant mixture condensed in the condenser;an evaporator for evaporating the refrigerant mixture decompressed in the expansion device;a condensing pipe extending from an outlet side of the condenser to the expansion device to guide flow of the refrigerant mixture;a suction pipe extending from an outlet side of the evaporator to the compressor to guide suction of the refrigerant mixture into the compressor; anda plurality of heat exchangers installed in the suction pipe to perform heat exchange of the refrigerant mixture sucked into the compressor.2. The deep freezer according to claim 1 ,wherein the plurality of heat exchangers includes a first heat exchanger, andwherein the first heat exchanger includes:a first suction heat exchanger for guiding flow of the refrigerant mixture sucked into the compressor; anda condensing heat exchanger for performing heat exchange with the first suction heat exchanger and guiding flow of the refrigerant mixture in the condensing pipe.3. The deep freezer according to claim 2 , wherein a diameter of a pipe of the condensing heat exchanger is greater than that of the expansion device.4. The deep freezer according to claim 2 ,wherein the plurality of heat exchangers includes a second heat exchanger, andwherein the second heat exchanger includes: ...

ORC POWER GENERATION APPARATUS

An ORC power generation apparatus for generating power by using new renewable thermal energy, includes: a housing, which has a front cover with a fluid inlet and a rear cover with a fluid outlet and is provided as structure insulated and sealed off from external air; a plurality of turbines which use an organic compound as a working fluid and having turbine shafts, each of which has one end portion penetrating a bored hole and a bearing provided in the center of the front cover of the housing so as to protrude outward, and has the other end portion coupled to a bearing provided in the center of the rear cover of the housing; and heat suppliers provided inside the housing and provided at the front of a working fluid inlet hole of each of the plurality of turbines. 1. An ORC power generation apparatus using new renewable thermal energy to generate power therefrom , comprising:a housing provided as an insulating structure sealed from external air and having a front cover with a fluid inlet formed thereon and a rear cover with a fluid outlet formed thereon;a plurality of turbines using an organic compound as a working fluid and having turbine shafts, each turbine shaft having one end portion passing through a bored hole and a bearing provided on the center of the front cover of the housing in such a manner as to protrude outward and the other end portion coupled to a bearing provided on the center of the rear cover of the housing; andheat suppliers located in front of a working fluid inlet hole formed on each turbine inside the housing,wherein the plurality of turbines are connected in series to each other inside the single housing, and the heat suppliers are provided inside the housing such that the working fluid flowing into the housing through the fluid inlet comes into direct contact with the heat suppliers so as to perform heat exchange and is then supplied to the turbines to increase power generation efficiency.2. The ORC power generation apparatus according to ...

SEALED COMPRESSOR AND REFRIGERATION UNIT COMPRISING SEALED COMPRESSOR

A sealed compressor comprises a sealed container () which accommodates an electric component () and a compression component (); wherein the compression component () includes a shaft () including a main shaft section () and an eccentric shaft section (), a cylinder block (), a piston (), and a main bearing unit () mounted to the cylinder block () and supporting the main shaft section () such that the main shaft section () is rotatable, a thrust ball bearing () mounted to a thrust surface () of the main bearing unit (); and the thrust ball bearing () includes a plurality of balls () held in a cage (), an upper race () having main surfaces one of which is in contact with upper portions of the balls (); and a lower race () having main surfaces one of which is in contact with lower portions of the balls () and; a restricting means for restricting a displacement of the upper race () with respect to the shaft (). 1. A sealed compressor comprising:an electric component including a stator and a rotor;a compression component actuated by the electric component;a sealed container which accommodates the electric component and the compression component and stores lubricating oil therein;wherein the compression component includes a shaft including a main shaft section to which the rotor is fastened and an eccentric shaft section, a cylinder block having a compression chamber, a piston reciprocatable inside the compression chamber, a connecting member for coupling the piston to the eccentric shaft section, and a main bearing unit mounted to the cylinder block and supporting the main shaft section such that the main shaft section is rotatable, a thrust ball bearing mounted to a thrust surface of the main bearing unit; and the thrust ball bearing includes a plurality of balls held in a cage, an upper race having main surfaces one of which is in contact with upper portions of the balls; and a lower race having main surfaces one of which is in contact with lower portions of the balls ...

SOLID-LIQUID SEPARATION DEVICE

A solid-liquid separation device performs dehydration/deoiling from a mixture of water and/or oil and a solid. Substance A is capable of dissolving water and oil. The device includes substance B circulated while generating phase change in a closed system; a compressor; a first heat exchanger exchanging condensation heat of substance B and evaporation heat of substance A; a second heat exchanger exchanging evaporation heat of substance B and condensation heat of substance A; and a treatment tank for mixing substance A with an object to be treated; substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger. The first heat exchanger is lower than the treatment tank in a vertical direction, and a connection port of the first heat exchanger and a lower portion of the treatment tank are connected with a flow path. 1. A solid-liquid separation device that performs dehydration or deoiling from an object to be treated that is a mixture of water and a solid , a mixture of oil and a solid , or a mixture of water , oil , and a solid , as the object to be treated , using a substance A capable of dissolving water and oil , the solid-liquid separation device comprising:a substance B that is circulated while generating phase change in a closed system;compression means that compresses the substance B;a first heat exchanger that exchanges heat of condensation of the substance B and heat of evaporation of the substance A;a second heat exchanger that exchanges heat of evaporation of the substance B and heat of condensation of the substance A; anda treatment tank in which the substance A is mixed with the object to be treated, the substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger, whereinthe first heat exchanger is installed in a lower portion than the treatment tank in a vertical direction, anda ...

COOLING SYSTEM

A thermal management system for a gas turbine engine and/or an aircraft is provided including a thermal transport bus having a heat exchange fluid flowing therethrough. The thermal management system also includes a plurality of heat source exchangers and at least one heat sink exchanger. The plurality of heat source exchangers and the at least one heat sink exchanger are in thermal communication with the heat exchange fluid in the thermal transport bus. The plurality of heat source exchangers are arranged along the thermal transport bus and configured to transfer heat from one or more accessory systems to the heat exchange fluid, and the at least one heat sink exchanger is located downstream of the plurality of heat source exchangers and configured to remove heat from the heat exchange fluid. 1. A thermal management system for incorporation at least partially into at least one of a gas turbine engine or an aircraft , the thermal management system comprising:a thermal transport bus having a heat exchange fluid flowing therethrough;a pump for generating a flow of the heat exchange fluid in the thermal transport bus;a plurality of heat source exchangers in thermal communication with the heat exchange fluid in the thermal transport bus, the plurality of heat source exchangers arranged along the thermal transport bus; andat least one heat sink exchanger permanently or selectively in thermal communication with the heat exchange fluid in the thermal transport bus at a location downstream of the plurality of heat source exchangers.2. The thermal management system of claim 1 , wherein the plurality of heat source exchangers are configured to transfer heat from an accessory system of the gas turbine engine to the heat exchange fluid in the thermal transport bus claim 1 , and wherein the at least one heat sink exchanger is configured to remove heat from the heat exchange fluid in the thermal transport bus.3. The thermal management system of claim 1 , wherein the at least one ...

Heat transfer methods, systems and compositions

Disclosed are refrigerants comprising at least about 97% by weight of a blend of three compounds, said blend consisting of: from about 40% by weight to about 49% by weight difluoromethane (HFC-32), from about 6% by weight to about 12% by weight pentafluoroethane (HFC-125), from about 33% by weight to about 40% by weight trifluoroiodomethane (CF 3 I); and from about 2% by weight to about 12% by weight of trans 1,3,3,3-tetrafluoropropene (trans HFO-1234ze), wherein the percentages are based on the total weight of the three compounds in the blend, and systems and method using same.

REFRIGERATOR

A refrigerator may include a compressor to compress a refrigerant, a condenser to condense the refrigerant having passed through compressor, a capillary tube to lower a temperature and a pressure of the refrigerant having passed though the condenser, an evaporator to evaporate the refrigerant having passed through the capillary tube, and a heat exchanger coupled to a refrigerant pipe connected to the compressor to cool the refrigerant in the refrigerant pipe. With components so arranged, operational efficiency of the refrigerator may be enhanced, and energy may be saved. 1. A refrigerator , comprising:a compressor configured to compress a refrigerant;a configured to receive refrigerant compressed by the compressor and to condense the received refrigerant;a capillary tube configured to receive refrigerant condensed by the condenser and to lower a temperature and a pressure of the received refrigerant;an evaporator configured to receive refrigerant from the capillary tube and to evaporate the received refrigerant; anda heat exchanger coupled to a refrigerant pipe connected to the compressor and configured to cool refrigerant in the refrigerant pipe.2. The refrigerator of claim 1 , further comprising:a first refrigerant pipe connecting the compressor to the condenser; anda second refrigerant pipe connecting the evaporator to the compressor,wherein the first and second refrigerant pipes are each coupled to the heat exchanger such that refrigerant flowing through the first and second refrigerant pipes perform heat exchange with each other.3. The refrigerator of claim 2 , wherein refrigerant at a relatively high temperature in a gaseous state flows in the first refrigerant pipe claim 2 , and refrigerant at a relatively low temperature in a gaseous state flows in the second refrigerant pipe.4. The refrigerator of claim 2 , wherein the heat exchanger is received in a machine room of the refrigerator having the compressor installed therein claim 2 , so as to contact air in ...

REFRIGERANT MIXTURES COMPRISING TETRAFLUOROPROPENE, DIFLUOROMETHANE, PENTAFLUOROETHANE, AND TETRAFLUOROETHANE AND USES THEREOF

A nonflammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture consists essentially of (a) from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125 (d) from 25.5 weight percent to 30 weight percent HFC-134a, and (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g. lubricants), in processes to produce cooling, in methods for replacing refrigerant R-404A or R-507, and in refrigeration apparatus. 1. (canceled)2. A non-flammable refrigerant mixture consisting essentially of:a. from 23 weight percent to 25.5 weight percent HFO-1234yf;b. from 22 weight percent to 24.5 weight percent HFC-32;c. from 24.5 weight percent to 27 weight percent HFC-125;d. from 25.5 weight percent 10 28 weight percent HFC-134a; ande. from about 0.0001 weight percent to about 5 weight percent trans-HFO-1234ze.3. The non-flammable refrigerant mixture of which is azeotrope-like and wherein trans-HFO-1234ze when present is from about 0.0001 to about 1 weight percent.4. A composition consisting of:(i) a non-flammable refrigerant component; and(ii) a non-refrigerant component;{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'wherein the refrigerant component is a non-flammable refrigerant mixture of .'}5. (canceled)6. The composition of wherein the non-refrigerant component is selected from the group consisting of lubricants claim 4 , dyes (including UV dyes) claim 4 , solubilizing agents claim 4 , compatibilizers claim 4 , stabilizers claim 4 , tracers claim 4 , perfluoropolyethers claim 4 , anti-wear agents claim 4 , extreme pressure agents claim 4 , corrosion and oxidation inhibitors claim 4 , metal surface energy reducers claim 4 , metal surface deactivators claim 4 , free radical scavengers claim 4 , foam control agents ...

Systems And Methods For Potable Water Production

Systems and methods are disclosed for water collection from atmospheric moisture in large quantities in uncontrolled outdoor environments where the temperature may be cold and humidity levels low. To extract water from air when the dew point is low, a heat exchanger cools to a point where water vapor is deposited on its surface as ice. The heat exchanger then cycles through a heating phase to melt the ice and generate liquid water. The accumulation of frost is advantageous. Frost accumulation enables water collection when the dew point is low. Disclosed variations enhance efficiency and environmental tolerance. 1. A system for collecting atmospheric moisture comprising:a compressor to compress a refrigerant;a condenser disposed along a refrigerant flow path, receiving high pressure gaseous refrigerant from the compressor, wherein the high pressure gaseous refrigerant condenses into a low pressure liquid refrigerant and releases heat, the refrigerant moving along the flow path;an expansion device comprising an expansion valve, a capillary device or a combination thereof disposed along the refrigerant flow path, receiving liquid refrigerant from the condenser, wherein the expansion device adjusts a pressure of the refrigerant;an evaporator disposed along the refrigerant flow path, receiving refrigerant from the expansion device and delivering refrigerant to the compressor, wherein the liquid refrigerant evaporates into gas refrigerant and absorbs heat, whereby the external surface temperature of the evaporator is lower than the dew point but higher than about 0° C., when the environment's temperature is warm the evaporator is configured to catch the water vapor inside of air and convert the water vapor into liquid water, wherein the liquid water falls from the evaporator to a bottom water tank; when the environment's temperature is cold, and the dew point is near, or lower than, about 0° C., the external surface temperature of the evaporator is lower than the dew ...

PUMP, REFRIGERATION CYCLE APPARATUS, AND METHOD FOR MANUFACTURING PUMP

In a pump, a resin magnet included in a rotor portion has a plurality of groove portions in an outer peripheral portion thereof, the groove portions extending in an axial direction. 1. A pump comprising:a molded stator including a board on which a magnetic-pole-position detection element is mounted; anda rotor including a rotor portion that is rotatably accommodated in a cup-shaped partition wall component, the rotor portion opposing the magnetic-pole-position detection element at one end and having an impeller attachment portion for attaching an impeller at other end,wherein, in the rotor portion, a magnet and a sleeve bearing disposed inside the magnet are integrally assembled together by using a thermoplastic resin, and the impeller attachment portion is formed of the thermoplastic resin, andwherein the magnet has a plurality of groove portions in an outer peripheral portion thereof, the groove portions extending in an axial direction.2. The pump of claim 1 ,wherein the groove portions have substantially a same shape, are arranged substantially radially, and are formed between magnetic poles formed in the rotor.3. The pump of claim 1 ,wherein the groove portions are formed so as to open in both end surfaces of the rotor.4. The pump of claim 1 , a hollow portion,', 'a plurality of first projections arranged radially on a magnetic-pole-position-detecting-element-side end surface of the rotor portion, the first projections being pressed to a mold in a molding process, and', 'a plurality of second projections provided on the hollow portion with substantially constant intervals therebetween in a circumferential direction, the second projections extending in the axial direction toward an impeller-side end surface and being pressed by the mold in the molding process., 'wherein the magnet includes'}5. The pump of claim 1 ,wherein the magnet has a plurality of cuts arranged radially in a magnetic-pole-position-detecting-element-side end surface of the rotor portion, the ...

HEAT EXCHANGER AND AIR CONDITIONER PROVIDED WITH HEAT EXCHANGER

A heat exchanger provided with a plurality of plate-like fins arranged in parallel with a predetermined interval and a plurality of flat-shaped heat transfer pipes inserted in a direction orthogonal to said plate-like fins and through which a refrigerant flows, in which said heat transfer pipe has an outside shape with a flat outer face arranged along an air flow direction and a section substantially in an oval shape and first and second refrigerant flow passages made of two symmetric and substantially D-shaped through holes having a bulkhead between the two passages inside, which is bonded to said plate-like fin by expanding diameters of said first and second refrigerant flow passages by a pipe-expanding burette ball. 1. A heat exchanger provided with a plurality of plate-like fins arranged in parallel with a predetermined interval and a plurality of flat-shaped heat transfer pipes inserted in a direction orthogonal to said plate-like fins and through which a refrigerant flows , whereinsaid heat transfer pipes have an outside shape with a flat outer face arranged along an air flow direction and a section substantially in an oval shape and first and second refrigerant flow passages made of two symmetric and substantially D-shaped through holes having a bulkhead between the two passages inside, which are bonded to said plate-like fin by expanding diameters of said first and second refrigerant flow passages by a pipe-expanding burette ball.2. The heat exchanger according to claim 1 , wherein a flow passage of one of or both of said first and second refrigerant flow passages has a plurality of protruding strips extending in an axial direction on an inner wall face.3. The heat exchanger according to claim 2 , wherein said plurality of protruding strips are formed at a required height so that their distal ends are brought into contact with a circular outer circumferential face of the pipe-expanding burette ball.4. The heat exchanger according to claim 2 , wherein a ...

Rubber Composition for Refrigerant-Transporting Hose, and Refrigerant-Transporting Hose

A rubber composition for refrigerant-transporting hoses includes, per 100 parts by mass of a rubber component, greater than 30 parts by mass but 180 parts by mass or less of a scale-like filler having at least one type selected from the group consisting of an amino group and an imino group in a surface.

REFRIGERATION APPARATUS

A refrigeration apparatus pertaining to the invention can suppress clogging due to polymers formed by the polymerization of refrigerant and improve safety. The refrigeration apparatus is equipped with a refrigeration cycle in which a compressor, a condenser, an expansion mechanism, and an evaporator are connected in a loop. The refrigeration apparatus is equipped with a polymer catcher. The polymer catcher is attached to piping interconnecting an outlet side of the compressor and an inlet side of the condenser and catches polymers of refrigerant circulating in the refrigeration cycle. The refrigerant includes a compound represented by a molecular formula having one or more carbon-carbon unsaturated bonds. 1. A refrigeration apparatus equipped with a refrigeration cycle in which a compressor , a condenser , an expansion mechanism , and an evaporator are connected in a loop , the refrigeration apparatus comprising:a polymer catcher that is attached to piping interconnecting an outlet side of the compressor and an inlet side of the condenser and catches polymers of refrigerant circulating in the refrigeration cycle,wherein the refrigerant includes a compound represented by a molecular formula having one or more carbon-carbon unsaturated bonds.2. The refrigeration apparatus according to claim 1 , further comprising a four-way switching valve that is attached to the piping claim 1 , wherein the polymer catcher is attached between the outlet side of the compressor and an inlet side of the four-way switching valve.3. The refrigeration apparatus according to claim 1 , wherein the polymer catcher is a filter that suppresses passage of the polymers.4. The refrigeration apparatus according to claim 1 , wherein the polymer catcher is a dryer that has an adsorbent that adsorbs the polymers.5. The refrigeration apparatus according to claim 4 , wherein the dryer further has a stabilizer and an antioxidant.6. The refrigeration apparatus according to claim 1 , wherein the condenser ...

REFRIGERANT-AMOUNT DETERMINING METHOD AND REFRIGERANT-AMOUNT DETERMINING DEVICE

In a refrigeration apparatus including a refrigerant circuit in which a refrigerant in a gas-liquid two-phase state flows through a liquid-side connection pipe, a refrigerant-amount determining method and a refrigerant-amount determining device capable of grasping an appropriate refrigerant charging amount corresponding to the length of the connection pipe is provided. Provided is a refrigerant-amount determining method for a refrigerant to be charged to a refrigeration apparatus including a refrigerant circuit in which a compressor, an outdoor heat exchanger that functions as a condenser, an outdoor expansion valve, indoor heat exchangers that function as evaporators, a liquid-side connection pipe that feeds the refrigerant, which has passed through the outdoor heat exchanger and then has been decompressed by the outdoor expansion valve, to each of the indoor heat exchangers, and a gas-side connection pipe that feeds the refrigerant, which has passed through each of the indoor heat exchangers, to a suction side of the compressor, are connected to one another. The method determines a refrigerant amount of the refrigerant to be charged to the refrigerant circuit such that a refrigerant amount per unit length of the liquid-side connection pipe increases as a length of the liquid-side connection pipe is larger. 1. A refrigerant-amount determining method for a refrigerant to be charged to a refrigeration apparatus including a refrigerant circuit in which a compressor , a condenser , a first expansion valve , an evaporator , a liquid-side connection pipe that feeds the refrigerant , which has passed through the condenser and then has been decompressed by the first expansion valve , to the evaporator , and a gas-side connection pipe that feeds the refrigerant , which has passed through the evaporator , to a suction side of the compressor , are connected to one another , the method comprising:determining a refrigerant amount of the refrigerant to be charged to the ...