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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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27-11-2008 дата публикации

ХОЛОДИЛЬНАЯ УСТАНОВКА

Номер: RU0000078495U1
Автор: Катрашов Александр Сергеевич, Максименко Василий Александрович, Маслов Владимир Спиридонович, Нечаев Александр Владимирович
Принадлежит: Государственное образовательное учреждение высшего профессионального образования "Омский государственный технический университет"

Холодильная установка, состоящая из верхнего А и нижнего Б каскадов, в которой испаритель верхнего каскада и конденсатор нижнего объединены в один аппарат (конденсатор-испаритель) КИ, верхний и нижний каскады состоят из конденсатора, испарителя, дроссельного вентиля и компрессора, соединенные между собой трубопроводом, отличающаяся тем, что к трубопроводу верхнего каскада после дроссельного вентиля добавлен запорный вентиль, соединенный с дополнительным испарителем, который в свою очередь должен быть соединен с запорным вентилем, установленным до компрессора, расположенного в верхнем каскаде, кроме того, в верхний каскад до и после КИ устанавливают еще по одному дополнительному запорному вентилю для обеспечения всех циклов работы. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 78 495 (13) U1 (51) МПК E02D 3/115 (2006.01) F25B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2008127575/22 , 07.07.2008 (24) Дата начала отсчета срока действия патента: 07.07.2008 (45) Опубликовано: 27.11.2008 (73) Патентообладатель(и): Государственное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" (RU) U 1 7 8 4 9 5 R U Ñòðàíèöà: 1 U 1 Формула полезной модели Холодильная установка, состоящая из верхнего А и нижнего Б каскадов, в которой испаритель верхнего каскада и конденсатор нижнего объединены в один аппарат (конденсатор-испаритель) КИ, верхний и нижний каскады состоят из конденсатора, испарителя, дроссельного вентиля и компрессора, соединенные между собой трубопроводом, отличающаяся тем, что к трубопроводу верхнего каскада после дроссельного вентиля добавлен запорный вентиль, соединенный с дополнительным испарителем, который в свою очередь должен быть соединен с запорным вентилем, установленным до компрессора, расположенного в верхнем каскаде, кроме того, в верхний каскад до и после КИ устанавливают еще по одному ...

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Номер записи: 1
21-06-2012 дата публикации

Heating system and heating system control method

Номер: US20120152514A1
Автор: Akira Hochi, Atsushi Kakimoto, Shinichi Takasaki
Принадлежит: Panasonic Corp

A heating system includes: a heat generation unit which generates heat using electricity supplied through a second power system of a lower electricity rate; a heat storage unit which stores heat generated by the heat generation unit; a heat radiation unit which radiates heat stored in the heat storage unit; and a control unit which causes, when receiving a signal from a power supplier indicating that a supply of electricity through the second power system is to be stopped after an elapse of a predetermined period of time, the heat generation unit generates additional heat that is required while the supply of electricity through the second power system being suspended, during a period of time from when the signal is received to when the supply of electricity through the second power system is stopped.

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Номер записи: 2
30-08-2012 дата публикации

Cascade refrigeration system with fluoroolefin refrigerant

Номер: US20120216551A1
Автор: Barbara Haviland Minor, Konstantinos Kontomaris, Thomas J. Leck
Принадлежит: EI Du Pont de Nemours and Co

The present invention relates to a cascade refrigeration system which circulates a refrigerant comprising a fluoroolefin therethrough. The cascade refrigeration system includes a low temperature refrigeration loop and a medium temperature refrigeration loop. The fluoroolefin circulates through either loop, or both. In a particular embodiment, the fluoroolefin circulates through the medium temperature loop. In a particular embodiment, where the cascade refrigeration system includes a first and a second cascade heat exchanger, and a secondary heat transfer loop which extends between the first and second cascade heat exchangers, either the first and/or second refrigerant may be, but need not necessarily be, a fluoroolefin.

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Номер записи: 3
04-10-2012 дата публикации

Co2 refrigeration system for ice-playing surface

Номер: US20120247148A1
Автор: Serge Dube
Принадлежит: Individual

A CO 2 refrigeration system for an ice-playing surface comprises a transfer circuit, a CO 2 refrigerant circuit and an independent condensation circuit. A transfer refrigerant circulates between a condensation heat exchanger and an evaporation heat exchanger. The CO 2 circuit is in relation with the condensation heat exchanger to release heat from the CO 2 refrigerant. The CO 2 circuit comprises a CO 2 condensation reservoir and an evaporation stage to receive the CO 2 refrigerant from the condensation reservoir. The independent circuit is in relation with the refrigerant of the transfer circuit at the evaporation heat exchanger. The independent circuit comprises a magnetically operated compressor to compress a secondary refrigerant, a condensation stage and an evaporation stage in which the secondary refrigerant absorbs heat.

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Номер записи: 4
03-01-2013 дата публикации

Cooling system for high density heat load

Номер: US20130000335A1
Автор: Frank E. DiPaolo, Reasey J. MAM, Stephen C. Sillato, Steven A. BORROR, Steven M. Madara, Thomas E. Harvey
Принадлежит: Liebert Corp

A cooling system for transferring heat from a heat load to an environment has a volatile working fluid. The cooling system includes first and second cooling cycles that are thermally connected to the first cooling cycle. The first cooling cycle is not a vapor compression cycle and includes a pump, an air-to-fluid heat exchanger, and a fluid-to-fluid heat exchanger. The second cooling cycle can include a chilled water system for transferring heat from the fluid-to-fluid heat exchanger to the environment. Alternatively, the second cooling cycle can include a vapor compression system for transferring heat from the fluid-to-fluid heat exchanger to the environment.

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Номер записи: 5
04-07-2013 дата публикации

Integrated heating, ventilation, air conditioning, and refrigeration system

Номер: US20130167577A1
Автор: Doron Shapiro, Norm E. Street, Roger J. Voorhis
Принадлежит: Hussmann Corp

A combined heating, ventilation, air conditioning, and refrigeration (“HVACR”) system including an HVAC sub-system and a refrigeration sub-system. The HVAC sub-system is in communication with an open space of an indoor environment and includes a first condenser, a first evaporator, and a first compressor at least partially defining a first refrigerant circuit circulating a first refrigerant for selectively conditioning an airflow within the HVAC sub

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Номер записи: 6
18-07-2013 дата публикации

CASCADE HEAT PUMP

Номер: US20130180276A1
Автор: Choi Jaeheuk, Kwak Taehee, Yoo Yoonho
Принадлежит:

Provided is a cascade heat pump. The cascade heat pump includes a first refrigerant cycle including a first compressor and a first indoor heat exchanger, a second refrigerant cycle including a second compressor and a second indoor heat exchanger, an outdoor heat exchanger in which a refrigerant compressed in the first compressor or the second compressor is condensed, a bypass tube allowing the refrigerant compressed in the second compressor to bypass the first compressor, thereby flowing into a discharge side of the first compressor, and a first flow rate regulating part disposed on a discharge side of the second compressor to introduce the refrigerant discharged from the second compressor into one of the first compressor and the bypass tube. 1. A cascade heat pump comprising:a first refrigerant cycle comprising a first compressor and a first indoor heat exchanger;a second refrigerant cycle comprising a second compressor and a second indoor heat exchanger;an outdoor heat exchanger in which a refrigerant compressed in the first compressor or the second compressor is condensed;a bypass tube allowing the refrigerant compressed in the second compressor to bypass the first compressor, thereby flowing into a discharge side of the first compressor; anda first flow rate regulating part disposed on a discharge side of the second compressor to introduce the refrigerant discharged from the second compressor into one of the first compressor and the bypass tube.2. The cascade heat pump according to claim 1 , wherein the bypass tube has one end connected to the first flow rate regulating part and the other end connected to the discharge side of the first compressor.3. The cascade heat pump according to claim 1 , further comprising a third refrigerant cycle disposed on a side of the first refrigerant cycle or the second refrigerant cycle claim 1 , the third refrigerant cycle comprising a third compressor and a third indoor heat exchanger to perform a cooling or heating operation.4 ...

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Номер записи: 7
18-07-2013 дата публикации

Refrigerating apparatus

Номер: US20130180278A1
Автор: Takashi Ikeda, Takeshi Sugimoto, Tetsuya Yamashita
Принадлежит: Mitsubishi Electric Corp

A refrigerating apparatus includes a high temperature side first cycle; a high temperature side second cycle; a low temperature side cycle in which carbon dioxide is used as a refrigerant; a first cascade condenser and a second cascade condenser, which each exchange heat between a high temperature side refrigerant and a low temperature side refrigerant; and a control unit lowering an evaporation temperature of a high temperature side evaporator in correspondence to the flow of the low temperature side refrigerant.

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Номер записи: 8
08-08-2013 дата публикации

High performance freezer having cylindrical cabinet

Номер: US20130199232A1
Автор: Mahesh Natarajan, Rajendra Khadtkar, Tushar Ingle
Принадлежит: Thermo Fisher Scientific Asheville LLC

A high performance freezer includes a deck and a cabinet supported above the deck and having a cabinet housing defining a generally cylindrical shape. The freezer includes a door supported by the cabinet housing that moves between open and closed positions by sliding or pivoting generally along the side wall of the cabinet. The freezer further includes a refrigeration system mounted at least partially within the deck and partially within the cabinet to refrigerate an inner chamber of the freezer. The cylindrical shape of the cabinet enables rotation of shelves within the inner chamber and a maximized storage space with a minimal floor space required.

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Номер записи: 9
15-08-2013 дата публикации

HEAT PUMP DEVICE

Номер: US20130205824A1
Автор: Morimoto Hiroyuki, Yamashita Koji
Принадлежит: Mitsubishi Electric Corporation

A heat pump device heats a second heat medium to a high temperature with high efficiency by using a secondary-loop refrigeration cycle while achieving a cooling operation and a heating operation simultaneously in a state where reliability and efficiency are ensured. 1. A heat pump device comprising:a first refrigerant circuit that makes a first refrigerant circulate therethrough by connecting a first compressor, a heat-source-side heat exchanger, a first expansion device, a first on-off device, and a refrigerant-side passage in a heat exchanger related to heat medium with refrigerant pipes;a first heat medium circuit that makes a first heat medium circulate therethrough by connecting a pump, a use-side heat exchanger, a heat-medium-side passage in the heat exchanger related to heat medium with heat medium pipes;a second refrigerant circuit that makes a second refrigerant circulate therethrough by connecting a second compressor, a first heat exchanger, a second expansion device, and a second heat exchanger with refrigerant pipes; anda second heat medium circuit that makes a second heat medium circulate therethrough, the second heat medium exchanging heat with the second refrigerant via the first heat exchanger,wherein the first compressor and the heat-source-side heat exchanger are included in an outdoor unit,wherein the first expansion device, the first on-off device, the heat exchanger related to heat medium, and the pump are included in a heat medium relay unit,wherein the use-side heat exchanger is included in an indoor unit,wherein the second compressor, the first heat exchanger, the second expansion device, and the second heat exchanger are included in a water heating unit, andwherein the first refrigerant circuit and the second refrigerant circuit are connected to each other via the second heat exchanger included in the water heating unit, and the first heat exchanger is capable to heat the second heat medium,wherein a third expansion device is provided at an ...

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Номер записи: 10
05-09-2013 дата публикации

AIR-CONDITIONING APPARATUS

Номер: US20130227976A1
Автор: Yamashita Koji
Принадлежит: Mitsubishi Electric Corporation

An air-conditioning apparatus includes a heat medium flow control device that adjusts the flow rate of a heat medium circulating in a use side heat exchanger, temperature sensors that are disposed in an inlet-side passage and an outlet-side passage of the use side heat exchanger and that detect temperatures of the heat medium, and a controller that controls the heat medium flow control device so that a temperature difference between a detection value of the temperature sensors is equal to a first target value. A refrigerant flowing through a refrigerant flow passage of the heat exchanger related to heat medium and a heat medium flowing through a heat medium flow passage of the heat exchanger related to heat medium are in counter flow relative to one another, and the controller changes the first target value in accordance with an operation state of a refrigerant circuit. 1. An air-conditioning apparatus comprising:a refrigerant circuit in which a compressor, a refrigerant passage switching device that switches a passage of a refrigerant discharged from the compressor, a heat source side heat exchanger, a first expansion device, and a refrigerant flow passage of a heat exchanger related to heat medium are connected via a refrigerant pipe through which the refrigerant is distributed;a heat medium circuit in which a heat medium flow passage of the heat exchanger related to heat medium, a heat medium sending device, a use side heat exchanger, and a heat medium flow control device, the heat medium flow control device being disposed in an inlet-side passage or outlet-side passage of the use side heat exchanger and controlling a flow rate of the heat medium circulating in the use side heat exchanger, are connected via a heat medium pipe through which a heat medium is distributed; anda controller that controls the heat medium flow control devicewherein the refrigerant flowing through the refrigerant circuit is a non-azeotropic refrigerant mixture including two or more ...

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Номер записи: 11
05-09-2013 дата публикации

Heat Pump Type Air-Warming Device

Номер: US20130227979A1
Автор: Ishii Syou, Kanou Yasuaki, Kasuka Junichiro
Принадлежит:

A unitary-side heat pump unit is configured so that a refrigerant circulates sequentially through a first compressor, a first heat exchanger, a cascade heat exchanger, a first expansion valve and an evaporator, and heat exchange with heat media of a heating unit is carried out in the first heat exchanger; a binary-side heat pump unit is configured so that a refrigerant circulates sequentially through a second compressor, a second heat exchanger, a second expansion valve and a cascade heat exchanger, and heat exchange with heat media of the heating unit is carried out in the second heat exchanger; the refrigerants of the unitary-side and binary-side heat pump units include carbon dioxide (CO) as a main component; and high pressure-side sections of the unitary-side and binary-side heat pump units are activated within substantially identical pressure ranges of supercritical pressure. 1. A heat pump-type heating device comprising:a heating unit that circulates heat media to a heating terminal;a unitary-side heat pump unit in which refrigerant circulates sequentially through a first compressor, a first heat exchanger, a cascade heat exchanger, a first expansion valve and an evaporator, and heat exchange with the heat media of the heating unit is carried out in the first heat exchanger;a binary-side heat pump unit in which refrigerant circulates sequentially through a second compressor, a second heat exchanger, a second expansion valve and a cascade heat exchanger, and heat exchange with heat media of a heating unit is carried out in the second heat exchanger; anda controller that controls the heating unit and the unitary-side and binary-side heat pump units, whereinthe refrigerants of the unitary-side and binary-side heat pump units include carbon dioxide as a main component; andthe controller activates both high pressure-side sections of the unitary-side and binary-side heat pump units within substantially identical pressure ranges of supercritical pressure.2. The heat ...

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Номер записи: 12
12-09-2013 дата публикации

Reliable cooling system for operation with a two-phase refrigerant

Номер: US20130233003A1
Автор: Ahmet Kayihan Kiryaman, Markus Piesker, Martin Sieme
Принадлежит: AIRBUS OPERATIONS GMBH

A cooling system, in particular for use on board an aircraft, includes a first cooling circuit allowing circulation of a two-phase refrigerant therethrough, a first evaporator disposed in the first cooling circuit, a first condenser disposed in the first cooling circuit, and a first heat sink adapted to provide cooling energy to the first condenser. The cooling system further includes a second cooling circuit allowing circulation of a two-phase refrigerant therethrough, a second evaporator disposed in the second cooling circuit, a second condenser disposed in the second cooling circuit, a second heat sink adapted to provide cooling energy to the second condenser, and a cooling energy transfer arrangement which is adapted to transfer cooling energy provided by the first heat sink and/or the first condenser to the second cooling circuit or to transfer cooling energy provided by the second heat sink and/or the second condenser to the first cooling circuit.

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Номер записи: 13
16-01-2014 дата публикации

STEAM GENERATION SYSTEM

Номер: US20140013786A1
Автор: Kanamaru Masayoshi, KAWAKAMI Akinori, Morita Akio, Tasaka Mika
Принадлежит:

There is provided an efficient steam generation system capable of reducing a temperature difference in heat to be drawn by a heat pump. A first heat pump () includes a first evaporator () and a second evaporator (). A second heat pump () is connected to the first heat pump () via an uppermost condenser () serving as the first evaporator (). A heat source fluid is passed through a second evaporator () of the first heat pump () and an evaporator () of the second heat pump () in sequence. Then, steam is generated by application of heat to water in a condenser () of the first heat pump (). 1. A steam generation system comprising:a single-stage or multiple-stage first heat pump in which at least the lowermost heat pump includes a first evaporator and a second evaporator; anda single-stage or multiple-stage second heat pump connected to the first heat pump via a condenser of the uppermost heat pump, the condenser serving as the first evaporator of the lowermost heat pump, whereina heat source fluid is passed through the second evaporator of the first heat pump and an evaporator of the lowermost heat pump in the second heat pump in sequence, andsteam is generated by application of heat to water in a condenser of the uppermost heat pump in the first heat pump.2. The steam generation system of claim 1 , whereinthe second heat pump is a single-stage heat pump,heat is drawn from the heat source fluid passed through the second evaporator of the first heat pump and the evaporator of the lowermost heat pump in the second heat pump in sequence, andsteam is generated by application of the heat to water in the condenser of the uppermost heat pump in the first heat pump.3. The steam generation system of claim 1 , whereinthe first heat pump is a multiple-stage heat pump in which some of or all of the heat pumps each include the first evaporator and the second evaporator as an evaporator,each of the first evaporators connects between the vertically adjoining heat pumps, andthe heat ...

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Номер записи: 14
16-01-2014 дата публикации

CASCADE REFRIGERATION CYCLE APPARATUS

Номер: US20140013790A1
Автор: ASARI Shun, ZUSHI Takahiro
Принадлежит: TOSHIBA CARRIER CORPORATION

According to one embodiment, a cascade refrigeration cycle apparatus according to the present embodiment includes a high-temperature-side and a low-temperature-side refrigeration circuits, an inverter and a control section. The high-temperature-side refrigeration circuit includes a first compressor and a cascade heat exchanger. The low-temperature-side refrigeration circuit includes a second compressor and the cascade heat exchanger. The inverter connected to at least one of the compressors. The control section controls the inverter so that a set operating frequency for the first compressor is higher than a set operating frequency for the second compressor when an operation of the apparatus is started. 1. A cascade refrigeration cycle apparatus comprising:a high-temperature-side refrigeration circuit including a high-temperature-side compressor, a high-temperature-side condenser, a high-temperature-side expander, and a cascade heat exchanger which are in communication with one another via refrigerant piping;a low-temperature-side refrigeration circuit including a low-temperature-side compressor, the cascade heat exchanger, a low-temperature-side expander, and an air-heat exchanger which are in communication with one another via refrigerant piping, the low-temperature-side refrigeration circuit being mounted in an identical housing in which the high-temperature-side refrigeration circuit is mounted;an inverter connected to at least one of the high-temperature-side compressor of the high-temperature-side refrigeration circuit and the low-temperature-side compressor of the low-temperature-side refrigeration circuit; andcontrol section which controls the inverter so that a set operating frequency for the high-temperature-side compressor is higher than a set operating frequency for the low-temperature-side compressor when an operation of the apparatus is started.2. The apparatus according to claim 1 , whereinthe high-temperature-side refrigeration circuit includes a ...

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Номер записи: 15
30-01-2014 дата публикации

CRYOGENIC REFRIGERATOR

Номер: US20140026596A1
Автор: Morie Takaaki, XU Mingyao
Принадлежит:

A cryogenic refrigerator includes a cylinder, a displacer accommodated in the cylinder so as to reciprocate inside the cylinder with a gap formed between the periphery of the displacer and the interior surface of the cylinder, and a depressed part formed on at least one of the periphery of the displacer and the interior surface of the cylinder. The ratio of the volume of the depressed part to the volume of the gap satisfies a condition of 8≦Vd/Vg≦75, where Vd is the volume of the depressed part and Vg is the volume of the gap. 1. A cryogenic refrigerator , comprising:a cylinder;a displacer accommodated in the cylinder so as to reciprocate inside the cylinder with a gap formed between a periphery of the displacer and an interior surface of the cylinder; anda depressed part formed on at least one of the periphery of the displacer and the interior surface of the cylinder,wherein a ratio of a volume of the depressed part to a volume of the gap satisfies a condition of 8≦Vd/Vg≦75, where Vd is the volume of the depressed part and Vg is the volume of the gap.2. The cryogenic refrigerator as claimed in claim 1 , wherein the depressed part is a groove.3. The cryogenic refrigerator as claimed in claim 1 , wherein the depressed part is helically formed.4. The cryogenic refrigerator as claimed in claim 1 , wherein the displacer includes a first passage through which the refrigerant gas flows claim 1 , and wherein the gap and the depressed part form a second passage through which the refrigerant gas flows on the periphery of the displacer.5. The cryogenic refrigerator as claimed in claim 1 , wherein the groove part is formed on only a part of the at least one of the periphery of the displacer and the interior surface of the cylinder. This application is based upon and claims the benefit of priority of Japanese Patent Application No. 2012-166642, filed on Jul. 27, 2012, the entire contents of which are incorporated herein by reference.1. Technical FieldA certain aspect of ...

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Номер записи: 16
13-02-2014 дата публикации

Integrated Power, Cooling, and Heating Apparatus Utilizing Waste Heat Recovery

Номер: US20140041387A1
Автор: Benson Dwayne M.
Принадлежит:

The present invention provides an apparatus for utilizing waste heat to power a reconfigurable thermodynamic cycle that can be used to selectively cool or heat an environmentally controlled space, such as a room, building, or vehicle. The present invention also integrates an electric machine, which may operate as a motor or generator, or both, and an additional prime mover, such as an internal combustion engine. Different combinations of these components are preferable for different applications. The system provides a design which reasonably balances the need to maximize efficiency, while also keeping the design cost effective. 1. A heating , cooling , and power system , comprising:a prime mover including an exhaust;a heater thermally coupled to the exhaust of the prime mover;a shaft coupled to the prime mover;an expander coupled to the shaft;a first conduit coupled between the heater and expander and configured for transporting a working fluid;a heat pump coupled to the shaft; andan electrical machine coupled to the shaft and configured to produce electricity or produce mechanical shaft power.2. The heating claim 1 , cooling claim 1 , and power system of claim 1 , further including a recuperator comprising a second conduit coupled between the expander and recuperator to recover heat from the working fluid exiting the expander.3. The heating claim 1 , cooling claim 1 , and power system of claim 1 , wherein the heat pump includes:a first heat exchanger including a second conduit coupled between the expander and the first heat exchanger;an expansion device including a third conduit coupled between the first heat exchanger and the expansion device;a second heat exchanger including a fourth conduit coupled between the expansion device and second heat exchanger; anda compressor coupled to the shaft.4. The heating claim 3 , cooling claim 3 , and power system of claim 3 , wherein the heat pump includes a valve connected to the second conduit to switch the heat pump between ...

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Номер записи: 17
27-02-2014 дата публикации

High-efficiency data center cooling

Номер: US20140053588A1
Автор: Bret W. Lehman, Daniel Pare, Ronald J. Licare, Wally Karrat
Принадлежит: International Business Machines Corp

Embodiments of the invention provide high-efficiency cooling in a data center in response to a cooling and/or humidity demand using a system having multiple cooling loops to allow for a higher chilled liquid temperature of a first chilled liquid loop, while maintaining data center room temperature and humidity control. Specifically, the system includes a plurality of integrated cooling systems each comprising one or more specifically sized chillers and a liquid loop to address the cooling demand. A free cooling heat exchanger is coupled to the first liquid loop for use when a wet-bulb temperature surrounding the data center is at or below a free cooling set point of the first chilled liquid loop. The system isolates humidity control components to a second chilled liquid loop, and enables greater control of the first chilled liquid loop of the data center to meet specific IT loads.

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Номер записи: 18
02-01-2020 дата публикации

COOLING SYSTEM

Номер: US20200003468A1
Автор: Hollister Mike, Zha Shitong
Принадлежит:

A system includes a flash tank, a first load, a second load, a first compressor, a second compressor, a first valve, and a second valve. The flash tank stores a refrigerant. The first and second loads use the refrigerant to cool first and second spaces. The first compressor compresses the refrigerant from the first load during a first mode of operation and a flash gas from the flash tank during a second mode of operation. The second compressor compresses a mixture of the refrigerant from the first and second loads during the first mode of operation. The first valve directs the flash gas from the flash tank to the first compressor during the second mode of operation. The second valve directs the compressed flash gas from the first compressor to the first load during the second mode of operation to defrost the first load. 1. A system comprising:a flash tank configured to store a refrigerant;a first load configured to use the refrigerant from the flash tank to cool a first space proximate the first load;a second load configured to use the refrigerant form the flash tank to cool a second space proximate the second load; compress the refrigerant from the first load during a first mode of operation; and', 'compress a flash gas from the flash tank during a second mode of operation;, 'a first compressor configured toa second compressor configured to compress a mixture of the refrigerant from the first load and the refrigerant from the second load during the first mode of operation; close during the first mode of operation; and', 'direct the flash gas from the flash tank to the first compressor during the second mode of operation; and, 'a first valve configured to close during the first mode of operation; and', 'direct the compressed flash gas from the first compressor to the first load during the second mode of operation to defrost the first load., 'a second valve configured to2. The system of claim 1 , wherein the first valve is further configured to direct the refrigerant ...

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Номер записи: 19
27-01-2022 дата публикации

CARBON DIOXIDE COOLING SYSTEM WITH SUBCOOLING

Номер: US20220026117A1
Автор: Uselton Robert B.
Принадлежит:

A subcooling controller includes a sensor and a processor. The sensor measures one or more of a temperature external to a first heat exchanger that removes heat from carbon dioxide refrigerant, a temperature of the carbon dioxide refrigerant, and a pressure of the carbon dioxide refrigerant. The processor determines that one or more of the measured temperature external to the first heat exchanger, the temperature of the carbon dioxide refrigerant, and the pressure of the carbon dioxide refrigerant is above a threshold and in response to that determination, activates a subcooling system. The subcooling system includes a condenser, a second heat exchanger, and a compressor. The condenser removes heat from a second refrigerant. The second heat removes heat from the carbon dioxide refrigerant stored in a flash tank. The compressor compresses the second refrigerant from the second heat exchanger and sends the second refrigerant to the condenser. 1. A subcooling controller comprising: a temperature external to a first heat exchanger configured to remove heat from carbon dioxide refrigerant, the first heat exchanger further configured to send the carbon dioxide refrigerant to a flash tank;', 'a temperature of the carbon dioxide refrigerant; and', 'a pressure of the carbon dioxide refrigerant; and, 'a sensor configured to measure one or more of determine that one or more of the measured temperature external to the first heat exchanger, the measured temperature of the carbon dioxide refrigerant, and the measured pressure of the carbon dioxide refrigerant is above a threshold;', a condenser configured to remove heat from a second refrigerant;', 'a second heat exchanger coupled to an exterior surface of the flash tank, the second heat exchanger configured to receive the second refrigerant from the condenser, the second heat exchanger further configured to remove heat from the carbon dioxide refrigerant stored in the flash tank; and', 'a compressor configured to compress the ...

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Номер записи: 20
14-01-2016 дата публикации

REFRIGERATION CYCLE DEVICE

Номер: US20160010898A1
Автор: Takeuchi Masayuki, Yamanaka Takashi
Принадлежит:

A first outward passage and a second outward passage are branched from a branch portion to guide refrigerants to a first evaporator and a second evaporator , respectively. In the second outward passage with a longer refrigerant flow path of the first and second outward passages and , a second decompressor is disposed closer to the branch portion rather than the second evaporator in the second outward passage . Further, a part of the second outward passage located on the downstream side of the refrigerant flow with respect to the second decompressor is defined by an inner pipe of a double pipe , and a part of a second return passage is defined by an outer pipe of the double pipe 1. A refrigeration cycle device comprising:a compressor that compresses and discharges a refrigerant;a radiator that dissipates heat from the refrigerant discharged from the compressor;a first decompressor and a second decompressor that are arranged in parallel on a downstream side of the radiator in a refrigerant flow, the first and second decompressors being adapted to decompress the refrigerant flowing out of the radiator;a first evaporator that exchanges heat between the refrigerant decompressed by the first decompressor and a first object to be cooled, to cool the first object to be cooled and to evaporate the refrigerant;a second evaporator that exchanges heat between the refrigerant decompressed by the second decompressor and a second object to be cooled, to cool the second object to be cooled and to evaporate the refrigerant;a first outward passage and a second outward passage which are refrigerant flow paths branched from a branch portion provided on the downstream side of the refrigerant flow through the radiator, and which are adapted to guide the refrigerants from the branch portion to refrigerant inlets of the first evaporator and the second evaporator, respectively; anda first return passage and a second return passage which are refrigerant flow paths merging at a merging ...

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Номер записи: 21
11-01-2018 дата публикации

VECTOR DRIVE FOR VAPOR COMPRESSION SYSTEMS

Номер: US20180010835A1
Автор: Khalili Kaveh, Rockenfeller Uwe
Принадлежит:

Described is a vector control system for a vapor compression circuit. The vector control system may monitor the vapor compression circuit and adjust the speed of one or more motors to increase efficiency by taking into account the torque forces placed on a compressor motor. 1. A vapor compression system , comprising:at least one compressor having an inlet pressure and an outlet pressure;at least one evaporator;at least one condenser;a refrigerant expansion device; anda vector control system configured to control the speed of the compressor to satisfy a load and also configured to control the torque of the compressor by adjusting the airflow across the evaporator, the condenser, or both.2. The vapor compression system of claim 1 , wherein adjusting the airflow across the evaporator claim 1 , the condenser claim 1 , or both changes the inlet or outlet pressure of the compressor to increase the energy efficiency of the vapor compression system.3. The vapor compression system of claim 1 , where the vapor compression system comprises an HVAC system that provides cooling to an airflow or liquid.4. The vapor compression system of claim 1 , wherein the system comprises a refrigeration system providing refrigeration to an airflow or heat transfer fluid or suction to a low pressure receiver.5. The vapor compression system of claim 1 , wherein the vapor compression system comprises a heat pump that provides heating to an air flow or liquid.6. The vapor compression system of claim 1 , wherein the system comprises one or more reversing valves to allow the system to operate as a heat pump.7. The vapor compression system of claim 1 , wherein the refrigerant expansion device is a pulsing expansion valve.8. The vapor compression system of claim 1 , wherein the system comprises two evaporators and two condensers that are staged such that a lower stage first condenser transfers heat to a higher stage second evaporator and thermal energy is transferred from the lower stage first ...

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Номер записи: 22
10-01-2019 дата публикации

Heat pump system comprising two stages, method of operating a heat pump system and method of producing a heat pump system

Номер: US20190011152A1
Автор: Florian HANSLIK, Holger Sedlak, Oliver Kniffler, Thaddäus HINTERBERGER
Принадлежит: Efficient Energy GmbH

A heat pump system includes a heat pump stage having a first evaporator, a first liquefier, and a first compressor; and a further heat pump stage having a second evaporator, a second liquefier, and a second compressor, wherein a first liquefier exit of the first liquefier is connected to a second evaporator entrance of the second evaporator via a connecting lead.

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Номер записи: 23
03-02-2022 дата публикации

COOLING SYSTEM

Номер: US20220034564A1
Автор: Hollister Mike, Zha Shitong
Принадлежит:

A system includes a flash tank, a first load, a second load, a first compressor, a second compressor, a first valve, and a second valve. The flash tank stores a refrigerant. The first and second loads use the refrigerant to cool first and second spaces. The first compressor compresses the refrigerant from the first load during a first mode of operation and a flash gas from the flash tank during a second mode of operation. The second compressor compresses a mixture of the refrigerant from the first and second loads during the first mode of operation. The first valve directs the flash gas from the flash tank to the first compressor during the second mode of operation. The second valve directs the compressed flash gas from the first compressor to the first load during the second mode of operation to defrost the first load. 1. A system comprising:a flash tank configured to store a refrigerant;a first load configured to use the refrigerant from the flash tank to cool a first space proximate the first load;a second load configured to use the refrigerant from the flash tank to cool a second space proximate the second load during a first mode of operation and a second mode of operation; compress the refrigerant from the first load during the first mode of operation; and', 'compress a flash gas from the flash tank during the second mode of operation;, 'a first compressor configured toa second compressor configured to compress a mixture of the refrigerant from the first compressor and the refrigerant from the second load during the first mode of operation; close during the first mode of operation; and', 'direct the flash gas from the flash tank to the first compressor during the second mode of operation; and, 'a first valve configured to close during the first mode of operation; and', 'direct the compressed flash gas from the first compressor to the first load during the second mode of operation to defrost the first load., 'a second valve configured to2. The system of claim 1 ...

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Номер записи: 24
21-01-2016 дата публикации

BRAYTON CYCLE TYPE REFRIGERATING APPARATUS

Номер: US20160018134A1
Автор: KUDO Mizuo, MACHIDA Akito, NAKAMURA Naoko, UEDA Shota
Принадлежит:

To provide a Brayton cycle type refrigerating apparatus using multiple stages of compressors and having a good response without reduction in efficiency due to change in heat load of the object to be cooled, the Brayton cycle type refrigerating apparatus () according to the present invention comprises, on a refrigerant line (), multiple stages of compressors (), a temperature sensor () for detecting heat load of an object to be cooled, and a buffer tank () provided between a low pressure line () and a high pressure line (), wherein a flow rate of the refrigerant in the refrigerant line is controlled by controlling opening degrees of valves () to adjust the cooling capacity.

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Номер записи: 25
21-01-2016 дата публикации

BINARY REFRIGERATING APPARATUS

Номер: US20160018135A1
Автор: Toyooka Takashi, YUZAWA Jiro
Принадлежит:

A binary refrigerating apparatus employs a refrigerant composition that has a small global-warming potential (GWP) to be earth friendly, can be used as a refrigerant capable of achieving a low temperature of −80° C., and is excellent in refrigerating capacity and other performance. A refrigerant composition used as a low-temperature-side refrigerant is a refrigerant mixture including a non-azeotropic mixture in which 20% by mass or less of carbon dioxide (R744) is mixed to difluoroethylene (R1132a). A refrigerant composition used as a high-temperature-side refrigerant is a combination of: a non-azeotropic mixture comprising the refrigerant group of difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and 1,1,3-trifluoro ethane (R143a); and 1,1,1,2,3-pentafluoropentene (HFO-1234ze), having a global-warming potential (GWP) of 1500 or less.

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Номер записи: 26
16-01-2020 дата публикации

REFRIGERATING SYSTEM AND REFRIGERATING SYSTEM CONTROL METHOD

Номер: US20200018523A1
Автор: HAZUI Yusuke, Nikaido Satoshi, TAKENAKA Yutaka, Tateishi Koki
Принадлежит: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

A refrigerating system of the present invention includes a plurality of parallel type refrigerators each of which has a plurality of compressors, and a host control device having a compressor start/stop permission output unit which is configured to output a compressor activation permission or a compressor stop permission to one of the plurality of parallel type refrigerators which is activated according to a predetermined permission condition. Each of the parallel-type refrigerators has a compressor activation control unit which is configured to a stopped compressor included in a certain refrigerator when a load factor of the certain refrigerator is equal to or greater than a first specified value and the compressor activation permission is received, and a compressor stop control unit which is configured to stop an activated compressor included in a certain refrigerator when the load factor of the certain refrigerator is less than a second specified value and the compressor stop permission is received. 16.-. (canceled)7. A refrigerating system comprising:a plurality of parallel type refrigerators each of which has a plurality of compressors; anda host control device having a compressor start/stop permission output unit which is configured to output a compressor activation permission or a compressor stop permission to one of the plurality of parallel type refrigerators according to an output mode indicating a type of output required for all of the plurality of parallel type refrigerators and a predetermined permission condition,wherein the compressor start/stop permission output unit determines to which of the parallel type refrigerators that is activated the compressor activation permission is output and to which of the parallel type refrigerators that is stopped the compressor activation permission is output according to the output mode, andeach of the parallel type refrigerators includes a compressor activation control unit which is configured to activate a ...

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Номер записи: 27
24-01-2019 дата публикации

DEEP FREEZER

Номер: US20190024948A1
Автор: BYUN Kangsoo, Lee Sanggyun, PARK Yongjoo, SONG Hyunsoo
Принадлежит:

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: ...

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Номер записи: 28
06-02-2020 дата публикации

Methods to Reduce Chlorophyll Co-Extraction Through Extraction of Select Essential Oils and Aromatic Isolates

Номер: US20200038777A1
Автор: Yevgeniy Galyuk
Принадлежит: Capna Ip Capital, Llc

A system, machine, and methods for selectively extracting chemicals from plant material without co-extracting chlorophyll, lipids and other undesirable constituents from plants, is described here. Extraction uses super-cooled solvents, such as 100% ethanol. The system and method provides plant extracts that are enriched in active compounds, and depleted in chlorophyll.

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Номер записи: 29
07-02-2019 дата публикации

Systems and Methods for Multi-Stage Refrigeration

Номер: US20190041126A1
Автор: David Ladd
Принадлежит: Bechtel Hydrocarbon Technology Solutions Inc

Systems and methods for multi-stage refrigeration in mixed refrigerant and cascade refrigeration cycles using one or more liquid motive eductors in combination with a pump.

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Номер записи: 30
18-02-2021 дата публикации

SYSTEMS AND METHODS FOR COOLING ELECTRICAL EQUIPMENT

Номер: US20210048230A1
Автор: Costakis John, Zhang Ming
Принадлежит:

The cooling systems of the present disclosure include a first refrigerant circuit in thermal communication with a heat load and in fluid communication with a main condenser, a free cooling circuit in fluid communication with the main condenser and a free-cooled water source, a chilled water circuit in fluid communication with the main condenser and an evaporator, and a second refrigerant circuit in fluid communication with the evaporator and a secondary condenser. The free cooling circuit is in thermal communication with the first refrigerant circuit via the main condenser, the chilled water circuit is in thermal communication with the first refrigerant circuit via the main condenser, and the second refrigeration circuit is in thermal communication with the chilled water circuit and the free cooling circuit. The second refrigeration circuit cools a fluid flowing in the chilled water circuit. Methods of operating a cooling system are also disclosed. 1. A cooling system comprising:a first refrigerant circuit in thermal communication with a heat load and in fluid communication with a main condenser;a free cooling circuit in fluid communication with the main condenser and a free-cooled water source, the free cooling circuit being in thermal communication with the first refrigerant circuit via the main condenser;a chilled water circuit in fluid communication with the main condenser and an evaporator, the chilled water circuit being in thermal communication with the first refrigerant circuit via the main condenser; anda second refrigerant circuit in fluid communication with the evaporator and a secondary condenser, the second refrigeration circuit being in thermal communication with the chilled water circuit and the free cooling circuit.2. The cooling system of claim 1 , further including a first control valve placed in an open position and a second control valve placed in a closed position thereby causing a refrigerant of the first refrigerant circuit to be condensed by ...

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Номер записи: 31
15-02-2018 дата публикации

REFRIGERATOR

Номер: US20180045433A1
Автор: CHA Kyunghun, KIM Kyeongyun, Kim Kyungseok
Принадлежит:

Disclosed is a refrigerator. The refrigerator includes a first compressor () configured to compress refrigerant, a first condenser () configured to condense the refrigerant compressed in the first compressor (), a first expansion valve () configured to reduce a temperature and pressure of the refrigerant condensed in the first condenser (), a first evaporator () configured to evaporate the refrigerant having passed through the first expansion valve (), a second compressor () configured to compress refrigerant, a second condenser () configured to condense the refrigerant compressed in the second compressor (), a second expansion valve () configured to reduce a temperature and pressure of the refrigerant condensed in the second condenser () and a second evaporator () configured to evaporate the refrigerant having passed through the second expansion valve (). The refrigerator further includes a heat exchanger () located at a rear of the first expansion valve (), and the heat exchanger () and the second condenser () undergo heat exchange therebetween. 1. A refrigerator comprising:a first compressor configured to compress first refrigerant;a first condenser configured to condense the first refrigerant compressed by the first compressor;a first expansion valve configured to reduce a temperature and a pressure of the first refrigerant condensed by the first condenser;a first evaporator configured to evaporate the first refrigerant having passed through the first expansion valve;a second compressor configured to compress second refrigerant;a second condenser configured to condense the second refrigerant compressed by the second compressor;a second expansion valve configured to reduce a temperature and a pressure of the second refrigerant condensed by the second condenser;a second evaporator configured to evaporate the second refrigerant having passed through the second expansion valve; anda heat exchanger arranged after and connected to the first expansion valve,wherein the ...

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Номер записи: 32
25-02-2016 дата публикации

CHILLER SYSTEM

Номер: US20160054034A1
Автор: Hwang Yoonjei, Lee Horim, PARK Hanyoung
Принадлежит:

A chiller system is provided. The chiller system may include a plurality of chillers, each of which may include a compressor, a condenser, and an evaporator, and a controller that controls the plurality of chillers. The controller may determine an expected load and a chiller to be operated of the plurality of chillers on the basis of the determined expected load to operate the determined chiller. 1. A chiller system , comprising:a plurality of chillers, each of which comprises a compressor, a condenser, and an evaporator; anda controller that controls the plurality of chillers, wherein the controller determines an expected load and a chiller of the plurality of chillers to be operated on the basis of the determined expected load, and operates the determined chiller.2. The chiller system according to claim 1 , wherein the plurality of chillers have capacities different from each other.3. The chiller system according to claim 1 , wherein the controller operates a portion or all of the plurality of chillers on the basis of the expected load.4. The chiller system according to claim 1 , wherein the controller determines the expected load on the basis of an expected load factor and an expected head factor claim 1 , wherein the expected load factor is determined on the basis of a temperature of cold water introduced into the evaporator and a target cold water outflow temperature claim 1 , and wherein the expected head factor is determined on the basis of a temperature of cooling water introduced into the condenser and the target cold water outflow temperature.5. The chiller system according to claim 1 , wherein the plurality of chillers comprise a first chiller claim 1 , and a second chiller having a capacity greater than a capacity of the first chiller claim 1 , and when it is determined that an operation method change is needed while one of the first chiller or the second chiller operates claim 1 , the controller stops the operating chiller and operates the other chiller ...

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Номер записи: 33
13-02-2020 дата публикации

REFRIGERATION CYCLE DEVICE

Номер: US20200049383A1
Автор: HATANAKA Kensaku, MORITA Hisato, TANAKA Kosuke
Принадлежит:

A refrigeration cycle apparatus includes a first refrigerant circuit including a first compressor, a first heat exchanger, a first refrigerant flow path of a second heat exchanger, a first expansion device, a third heat exchanger, and a second refrigerant flow path of a fourth heat exchanger, and a second refrigerant circuit including a second compressor, a fifth heat exchanger, a second expansion device, a third refrigerant flow path of the second heat exchanger, and a fourth refrigerant flow path of the fourth heat exchanger. A first refrigerant flows through, in order, the first compressor, the first heat exchanger, the first refrigerant flow path, the first expansion device, the third heat exchanger, and the second refrigerant flow path. The second refrigerant flows through, in order, of the second compressor, the fifth heat exchanger, the second expansion device, the third refrigerant flow path, and the fourth refrigerant flow path. 1. A refrigeration cycle apparatus comprising:a first refrigerant circuit through which first refrigerant flows, the first refrigerant circuit including a first compressor, a first heat exchanger, a first refrigerant flow path of a second heat exchanger, a first expansion device, a third heat exchanger, and a second refrigerant flow path of a fourth heat exchanger; anda second refrigerant circuit through which second refrigerant flows, the second refrigerant circuit including a second compressor, a fifth heat exchanger, a second expansion device, a third refrigerant flow path of the second heat exchanger, and a fourth refrigerant flow path of the fourth heat exchanger,the first refrigerant flowing through the first refrigerant circuit in order of the first compressor, the first heat exchanger, the first refrigerant flow path, the first expansion device, the third heat exchanger, and the second refrigerant flow path,the second refrigerant flowing through the second refrigerant circuit in order of the second compressor, the fifth heat ...

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Номер записи: 34
15-05-2014 дата публикации

REFRIGERATION APPLIANCE WITH TWO EVAPORATORS IN DIFFERENT COMPARTMENTS

Номер: US20140130536A1
Автор: JOPPOLO CESARE MARIA, MOLINAROLI LUCA, VISEK MATEJ
Принадлежит: WHIRLPOOL CORPORATION

A refrigerator having a refrigerating circuit with a compressor, a condenser and two evaporators placed in different compartments of the appliance comprises valve means for alternatively directing refrigerant flow towards one of the evaporators. One of the evaporators is in heat exchange relationship with a phase change material 1. A refrigeration circuit for a refrigeration appliance comprising:a compressor,a condenser,a first evaporator is in a first refrigeration compartment of the refrigeration appliance,a second evaporator is in a second refrigeration compartment of the refrigeration appliance,flow directing means in fluid contact with the first and second evaporators,wherein the flow directing means alternatively directs refrigerant flow towards one of the evaporators, andwherein at least one of the evaporators is in a heat exchange relationship with a phase change material.2. The refrigeration circuit of claim 1 , further comprising a second flow directing means adapted to divert refrigerant flow towards an auxiliary circuit claim 1 ,wherein said auxiliary circuit is in heat exchange relationship with said phase change material, andwherein said heat exchange relationship sub-cools the refrigerant.3. The refrigeration circuit of claim 2 , wherein said auxiliary circuit is:downstream the phase change material, andfurther comprises an expansion device which is upstream the evaporator that is in the heat exchange relationship with the phase change material.4. The refrigeration circuit of wherein upstream the evaporator that is in the heat exchange relationship with the phase change material is in a refrigeration compartment.5. The refrigeration circuit of wherein upstream the evaporator that is in the heat exchange relationship with the phase change material is in a refrigeration compartment.6. The refrigeration circuit of claim 1 , wherein the flow directing means comprises a valve.7. The refrigeration circuit of claim 1 , wherein the flow directing means is a ...

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Номер записи: 35
01-03-2018 дата публикации

Air Handling System for a Land Transport Vehicle, Vehicle Comprising such a System and Air Handling Method

Номер: US20180057023A1
Автор: ABOU-EID Rami, Chevalier Philippe, HEUZE Alexandre
Принадлежит: Alstom Transport Technologies

An air handling system () for a land transport vehicle, in particular a railway vehicle (M) is disclosed. The system includes: one or more air handling units () distributed within the vehicle (M); a cooling machine () that supplies frigories to the air handling units; and a frigories storage unit () that is capable of being loaded by the cooling machine and of supplying frigories to the air handling units when the vehicle is travelling in an enclosed or partially enclosed space. When the vehicle (M) is travelling in the open air, the cooling machine () supplies frigories to the air handling units () and loads the frigories storage unit () if a surplus of frigories is produced, by discharging into the exterior of the vehicle (M) the heat extracted from an interior volume of the vehicle. 1. An air handling system for a land transport vehicle , in particular a railway vehicle , comprising:one or more air handling units distributed within the vehicle;a cooling machine that supplies frigories to the air handling units;a frigories storage unit that is capable of being loaded by the cooling machine and of supplying frigories to the air handling units when the vehicle is travelling in an enclosed or partially enclosed space,wherein when the vehicle is travelling in the open air, the cooling machine supplies frigories to the air handling units and loads the frigories storage unit if a surplus of frigories is produced, by discharging into the exterior of the vehicle the heat extracted from an interior volume of the vehicle.2. An air handling system according to claim 1 , further comprising a control device that is capable of determining whether the vehicle is travelling in an enclosed/partially enclosed space or in the open air.3. An air handling system according to claim 1 , further comprising a control device that is capable of triggering the production of frigories by the cooling machine if the cold storage unit has a zero load.4. An air handling system according to claim ...

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Номер записи: 36
21-02-2019 дата публикации

Superheat Control Scheme

Номер: US20190056151A1
Автор: Najafifard Fardis
Принадлежит:

A system includes a high side heat exchanger, a flash tank, a first load, a second load, a first compressor, and a heat exchanger. The flash tank is configured to store the refrigerant from the high side heat exchanger. The first load is configured to use the refrigerant from the flash tank to remove heat from a first space proximate to the first load. The second load is configured to use the refrigerant from the flash tank to remove heat from a second space proximate to the second load. The first compressor is configured to compress the refrigerant from the first load. The heat exchanger is configured to transfer heat from the refrigerant from the first compressor and the second load to the refrigerant from the high side heat exchanger, and direct the refrigerant from the first compressor and the second load to a second compressor. 1. A system comprising:a high side heat exchanger configured to remove heat from a refrigerant;a flash tank configured to store the refrigerant from the high side heat exchanger;a first load configured to use the refrigerant from the flash tank to remove heat from a first space proximate to the first load;a second load configured to use the refrigerant from the flash tank to remove heat from a second space proximate to the second load;a first compressor configured to compress the refrigerant from the first load; and transfer heat from the refrigerant from the first compressor and the second load to the refrigerant from the high side heat exchanger; and', 'direct the refrigerant from the first compressor and the second load to a second compressor., 'a heat exchanger configured to2. The system of claim 1 , further comprising a bypass valve configured to:prevent the flow of the refrigerant from the high side heat exchanger to the heat exchanger; anddirect the refrigerant from the high side heat exchanger to the flash tank.3. The system of claim 1 , further comprising a flash gas valve configured to direct a flash gas from the flash tank to ...

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Номер записи: 37
12-03-2015 дата публикации

Thermal System Including an Environmental Test Chamber

Номер: US20150068037A1
Автор: Powell Richard M.
Принадлежит: SPX Corporation

A system is provided where the system includes a chamber, a first cooling system including a first cooling load evaporator, wherein the first cooling system is placed within the chamber, a second cooling system including a fluid coil, wherein the fluid coil is placed within the chamber, and a thermal storage for a second cooling fluid in the second cooling system, wherein the thermal storage is placed outside the chamber. In the system, the first cooling system further includes a first compressor and a first condenser and the second cooling system further includes a thermal storage chiller, wherein the thermal storage chiller is placed outside the chamber. 1. A system , comprising:a chamber;a first cooling system comprising a first cooling load evaporator, wherein the first cooling system is placed within the chamber;a second cooling system comprising a fluid coil, wherein the fluid coil is placed within the chamber; anda thermal storage for a second working fluid in the second cooling system, wherein the thermal storage is placed outside the chamber.2. The system according to claim 1 , wherein the first cooling system further comprises a first compressor and a first condenser claim 1 , and wherein the second cooling system further comprises a thermal storage chiller claim 1 , wherein the thermal storage chiller is placed outside the chamber.3. The system according to claim 1 , wherein the first cooling system comprises a single compressor.4. The system according to claim 1 , wherein the first cooling system further comprises:a low stage loop;a high stage loop; anda cascade condenser.5. The system according to claim 4 , wherein the low stage loop is configured to process a low stage working fluid claim 4 , wherein the high stage loop is configured to process a high stage working fluid claim 4 , and wherein the low stage loop and the high stage loop are connected to the cascade condenser.6. The system according to claim 4 , wherein the system is configured to process ...

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Номер записи: 38
17-03-2022 дата публикации

REFRIGERATION ARRANGEMENT FOR A MOTOR VEHICLE

Номер: US20220080809A1
Автор: Mehlan Markus, Wichmann Rainer
Принадлежит:

A refrigeration arrangement for traction vehicles includes a first closed circuit configured as a compression refrigeration machine containing a refrigerant as a first carrier medium, evaporator and condenser. The evaporator absorbs heat into the first circuit. The condenser transfers heat from the first circuit. The first circuit is coupled, via the evaporator, to a closed second circuit containing a liquid second carrier medium for heat transport. The second circuit, for cooling, takes heat and transfers it to the second carrier medium. The heat is conveyed, by the second carrier medium, to the evaporator for transfer to the first circuit. The first circuit is coupled, via the condenser, to a closed third circuit containing a liquid third carrier medium for heat transport. The third circuit causes heat from the first circuit, transferred into the third circuit by the condenser, to be transferred to surroundings with heat from traction systems. 113-. (canceled)14. A refrigeration arrangement for a traction vehicle , the refrigeration arrangement comprising:a closed first circuit configured as a compression refrigeration machine including a refrigerant as a first carrier medium, an evaporator configured as a liquid-liquid heat exchanger, a condenser configured as a liquid-liquid heat exchanger, a compressor, and a restrictor, said first carrier medium passing from said evaporator through said compressor to said condenser and from said condenser through said restrictor back to said evaporator;a closed second circuit including said evaporator, a compressor, a fan, a heat exchanger and a liquid second carrier medium for transporting heat, said second carrier medium passing from said heat exchanger through said compressor to said evaporator and from said evaporator back to said heat exchanger of said second circuit;a closed third circuit including said condenser, a first heat exchanger, a second heat exchanger, a liquid third carrier medium for transporting heat, and a ...

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Номер записи: 39
11-03-2021 дата публикации

Methods to Reduce Chlorophyll Co-Extraction Through Extraction of Select Moieties Essential Oils and Aromatic Isolates

Номер: US20210069608A1
Автор: Galyuk Yevgeniy
Принадлежит:

A system machines and methods for extracting select moieties, flavonoids, and essential oils from plant material without co-extracting chlorophyll, lipids and other undesirable constituents from plants. Super-cooled extraction techniques are taught. Likewise, according to embodiments methods provides 100% grain ethyl alcohol extract with a concentration of chlorophyll that is below 1%. 1. A composition that comprises the plant substrate extract product by a safer and more reliable extraction process , wherein the composition comprises an essential oil or a mineral oil , and wherein the process is for extracting cannabinoids and to reduce chlorophyll and wax co-extraction from a cannabis or hemp plant substrate comprising , wherein the process excludes use of liquid carbon dioxide in combination , and wherein the process comprises:(i) pre-processing comprising lowering the temperature of a solvent to a range of −30 degrees C. to −50 degrees C.(ii) contacting at −30 degrees C. to −50 degrees C., wherein there is a contacting time between the cannabis plant substrate and the solvent to create an emulsion,(iii) evaporating for reduction of the emulsion by means of atmospheric evaporation of the solvent,(iv) recovering for recovery of the solvent from the emulsion, wherein optionally,', '(a) the solvent is 95% ethanol and 5% of a solvent that is another solvent that does not comprise ethanol, or', '(b) the solvent is at least one solvent-like material selected from the group consisting essentially of heptane, hexane, isopropyl alcohol, and methanol., '(v) purging under vacuum to remove remaining solvent from the extract whereby a resultory extract is substantially free of any lipids and chlorophyll,'}2. The composition of claim 1 , wherein the composition is one of:(i) a liquid at room temperature (23 degrees C.),(ii) a composition that comprises an oil, and wherein the oil is optionally an essential oil, a vegetable oil, or a mineral oil,(iii) a composition that ...

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Номер записи: 40
16-03-2017 дата публикации

Cooling System with Low Temperature Load

Номер: US20170074550A1
Автор: Ali Masood, Zimmermann Augusto J. Pereira
Принадлежит:

A system includes a flash tank, a load, a first compressor, a second compressor, and a liquid injection line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The second compressor compresses the refrigerant from the first compressor. The liquid injection line is coupled to the flash tank and to the second compressor and sends a liquid refrigerant from the flash tank to mix with the refrigerant from the first compressor before the refrigerant from the first compressor is received by the second compressor. 1. A system comprising:a high side heat exchanger configured to remove heat from a refrigerant;a flash tank configured to store the refrigerant from the high side heat exchanger;a load configured to use the refrigerant from the flash tank to remove heat from a space proximate the load;a first compressor configured to compress the refrigerant from the load;a second compressor configured to compress the refrigerant from the first compressor, the second compressor configured to send the refrigerant to the high side heat exchanger;a flash gas bypass line coupled to the flash tank and to the second compressor, the flash gas bypass line configured to send a flash gas from the flash tank to mix with the refrigerant from the first compressor before the refrigerant from the first compressor is received by the second compressor; anda liquid injection line coupled to the flash tank and to the second compressor, the liquid injection line configured to send a liquid refrigerant from the flash tank to mix with the refrigerant from the first compressor before the refrigerant from the first compressor is received by the second compressor.2. The system of claim 1 , further comprising a second high side heat exchanger configured to remove heat from the refrigerant from the first compressor claim 1 , the second high side heat exchanger ...

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Номер записи: 41
16-03-2017 дата публикации

AIR CONDITIONER AND COOLING RECEIVER OF AIR CONDITIONER

Номер: US20170074559A1
Автор: Choi Jaeheuk, Ha Doyong, Park Sangil, Yoo Yoonho
Принадлежит:

An air conditioner in which a supercooler and a receiver are integrated and the cooling receiver of the air conditioner. The cooling receiver of an air conditioner includes a cooling unit configured to include at least one first refrigerant flow channel through which a refrigerant flows and a second refrigerant flow channel which surrounds the outer circumference of part of the at least one first refrigerant flow channel and through which a refrigerant flows and supercools a refrigerant flowing through the first refrigerant flow channel and a receiver unit configured to have at least one end of the cooling unit disposed in the receiver unit and to store the supercooled refrigerant exiting from the first refrigerant flow channel. 1. An air conditioner , comprising:an air-conditioning cycle comprising a first compressor, a first condenser, a first expansion device, and a first evaporator, the air-conditioning cycle having a first refrigerant circulating therethrough;a refrigeration cycle circuit comprising a second compressor, a second condenser, a second expansion device, and a second evaporator, the refrigeration cycle having a second refrigerant circulating therethrough; anda cooling receiver to thermally exchange the first and second refrigerants respectively passed through the first and second condensers, the cooling receiver to store the thermally exchanged refrigerant, a cooling unit comprising at least one first refrigerant flow channel through which the second refrigerant passed through the second condenser flows and a second refrigerant flow channel which surrounds an outer circumference of part of the at least one first refrigerant flow channel and through which the first refrigerant passed through the first condenser flows and supercools the second refrigerant flowing through the first refrigerant flow channel; and', 'a receiver unit accommodating at least a first end of the cooling unit and storing the supercooled refrigerant exiting from the first ...

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Номер записи: 42
16-03-2017 дата публикации

Cooling System with Low Temperature Load

Номер: US20170074567A1
Автор: Ali Masood, Zimmermann Augusto J. Pereira
Принадлежит:

A system includes a temperature sensor, a pressure sensor, and a controller. The temperature sensor measures a temperature of a refrigerant at a compressor. The compressor receives the refrigerant from a second compressor. The pressure sensor measures a pressure of the refrigerant at the compressor. The controller receives one or more of the measured temperature and the measured pressure and determines that one or more of the measured temperature and the measured pressure exceed a threshold. In response to that determination, the controller actuates a pulse valve coupled to a liquid injection line. The pulse valve controls the flow of a liquid refrigerant from a flash tank through the liquid injection line to mix with the refrigerant at the compressor. 1. An apparatus comprising: receive the refrigerant from a second compressor; and', 'send the refrigerant to a high side heat exchanger configured to remove heat from the refrigerant;, 'a temperature sensor configured to measure a temperature of a refrigerant at a compressor, the compressor configured toa pressure sensor configured to measure a pressure of the refrigerant at the compressor; and receive one or more of the measured temperature and the measured pressure;', 'determine that one or more of the measured temperature and the measured pressure exceed a threshold; and', 'in response to the determination that one or more of the received temperature and the received pressure exceed the threshold, actuate a pulse valve coupled to a liquid injection line, the pulse valve configured to control the flow of a liquid refrigerant from a flash tank through the liquid injection line to mix with the refrigerant at the compressor;, 'a controller communicatively coupled to the temperature sensor and the pressure sensor, the controller configured to store the refrigerant from the high side heat exchanger; and', 'send a flash gas through a flash gas bypass line coupled to the flash tank to mix with the refrigerant at the ...

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Номер записи: 43
18-03-2021 дата публикации

COOLING APPARATUS, EXPOSURE APPARATUS INCLUDING COOLING APPARATUS, AND INDUSTRIAL APPARATUS INCLUDING COOLING APPARATUS

Номер: US20210080164A1
Автор: ISHIHAMA Hitoshi, NAGATA Masakazu, Suzuki Yuusuke
Принадлежит:

A cooling apparatus includes a compressor, a first flow path and a second flow path branched from a branch point, a condenser disposed downstream of the branch point in the first flow path, a first decompressor disposed downstream of the condenser, a plurality of evaporators disposed downstream of the first decompressor and connected in series, a second decompressor disposed downstream of the branch point in the second flow path, a detection unit, and a control unit. The second flow path includes a hot-gas flow path configured to connect an outlet of the second decompressor and a meeting point with the first flow path. The control unit controls a degree of opening of the second decompressor depending on the temperature detected by the first temperature-detection unit and controls a degree of opening of the first decompressor depending on the temperature and/or the pressure detected by the detection unit. 1. A cooling apparatus comprising:a compressor configured to compress coolant;a first flow path and a second flow path branched from a branch point, the branch point being disposed downstream of the compressor and configured to split compressed coolant toward the first and second flow paths;a condenser disposed downstream of the branch point in the first flow path and configured to condense compressed coolant;a first decompressor disposed downstream of the condenser and configured to decompress condensed coolant;a plurality of evaporators disposed downstream of the first decompressor and connected in series with each other such that the evaporators cool different objects to be cooled;a second decompressor disposed downstream of the branch point in the second flow path and configured to decompress compressed coolant;a return path configured to return coolant that flows out of the most downstream evaporator of the plurality of evaporators, to the compressor;a first temperature-detection unit configured to detect a temperature of an object cooled by the most downstream ...

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Номер записи: 44
29-03-2018 дата публикации

REFRIGERATED MERCHANDISER INCLUDING EUTECTIC PLATE REFRIGERATION

Номер: US20180084925A1
Автор: Liu Jiaching, Rajagopalan Anand G.
Принадлежит:

A refrigerated merchandiser includes a case having a base and a canopy at least partially defining a product display area. One or more eutectic plates are positioned in the product display area. The eutectic plates include a fluid contained in a housing. A heat exchanger including a coil is positioned in the housing to cool the fluid. The coil has an inlet, an outlet spaced from the inlet, a first portion, and a second portion adjacent and in thermal communication with the first portion to define a tube-to-tube heat exchanger. 1. A refrigerated merchandiser comprising:a case including a base and a canopy at least partially defining a product display area;a eutectic plate positioned in the product display area and including a housing defining a hollow cavity;a fluid contained in the housing; anda heat exchanger including a coil positioned in the housing to cool the fluid, the coil having an inlet, an outlet spaced from the inlet, a first portion, and a second portion adjacent and in thermal communication with the first portion to define a tube-to-tube heat exchanger.2. The refrigerated merchandiser of claim 1 , wherein the first portion is defined by a curvilinear section that extends at least partially inside of a second serpentine portion.3. The refrigerated merchandiser of claim 1 , wherein the first portion is in contact with the second portion.4. The refrigerated merchandiser of claim 1 , wherein the first portion is fused to the second portion.5. The refrigerated merchandiser of claim 1 , wherein the first portion is within one third or less of the entire length of the coil from the inlet and the second portion is within one third or less of the entire length of the coil from the outlet.6. The refrigerated merchandiser of claim 1 , wherein the housing includes walls that intersect one another at a flush joint.7. The refrigerated merchandiser of claim 1 , wherein the eutectic plate defines a deck of the merchandiser.8. The refrigerated merchandiser of claim 1 , ...

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Номер записи: 45
19-06-2014 дата публикации

Combined cascade refrigeration cycle apparatus

Номер: US20140165642A1
Автор: Shun Asari, Takahiro Zushi, Takahisa Endo
Принадлежит: Toshiba Carrier Corp

According to one embodiment, an apparatus includes a housing, two high-temperature-side refrigeration circuits and two low-temperature-side refrigeration circuits. Each of the high-temperature-side refrigeration circuits is configured to exchange heat with both of the two low-temperature-side refrigeration circuits by cascade heat exchangers. A hot-water pipe letting water or hot water through water-refrigerant heat exchangers of the high-temperature-side refrigeration circuits is provided. When the low-temperature-side refrigeration circuit conducts a defrosting operation of the evaporator, the low-temperature-side refrigeration circuits are controlled in such a way that the low-temperature-side refrigerant circuit releases heat in the cascade heat exchanger.

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Номер записи: 46
23-03-2017 дата публикации

SYSTEMS AND METHODS FOR COOLING DATA CENTERS AND OTHER ELECTRONIC EQUIPMENT

Номер: US20170086333A1
Автор: Roy Rob
Принадлежит:

Described herein is an integrated data center that provides for efficient cooling, as well as efficient wire routing. 1. A method of controlling an environment within an enclosed space , the method comprising:supplying a supply air stream from an environmental control assembly to the enclosed space;returning at least a portion of the supply air stream to the environmental control assembly as a return air stream;controlling a temperature of the supply air stream with the environmental control assembly based at least in part on a temperature associated with the enclosed space;detecting a pressure differential between a hot aisle of the enclosed space and a cold aisle of the enclosed space with a differential pressure sensor; andcontrolling a flow rate of the supply air stream with the environmental control assembly based at least in part on the pressure differential, wherein the enclosed space utilizes hot aisle containment to separate the hot aisle from the cold aisle, and further wherein the method includes maintaining a pressure in the hot aisle to be less than a pressure in the cold aisle.2. The method of claim 1 , wherein controlling the temperature of the supply air stream and controlling the flow rate of the supply air stream includes controlling the temperature of the supply air stream independently from controlling the flow rate of the supply air stream.3. The method of claim 2 , wherein controlling the temperature of the supply air stream independently from controlling the flow rate of the supply air stream includes controlling the temperature of the supply air stream without varying the flow rate of the supply air stream claim 2 , and further wherein controlling the temperature of the supply air stream independently from controlling the flow rate of the supply air stream includes controlling the flow rate of the supply air stream without varying the temperature of the supply air stream.4. The method of claim 1 , wherein the environmental control assembly ...

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Номер записи: 47
21-03-2019 дата публикации

Modular Cooling System For High-Rise Building

Номер: US20190086125A1
Автор: Bates Douglas
Принадлежит:

An air conditioning system for a high-rise building includes a condenser unit and a compressor separate from the condenser unit and in fluid communication with the condenser unit. The compressor is to be located at a floor of a high-rise building that is below a location of the condenser unit at a roof top of the high-rise building. The system may also include an oil separator to separate oil from a refrigerant. The oil separator is in a path of the refrigerant from the compressor to the condenser unit, where the oil separator is distal from the condenser unit and proximal to the compressor. 1. An air conditioning system for a high-rise building , the air conditioning system comprising:a condenser unit;a compressor that is separate from the condenser unit and in fluid communication with the condenser unit, wherein the compressor is designed to be located at a floor of the high-rise building that is below a location of the condenser unit at a roof top of the high-rise building; andan oil separator configured to be located below the location of the condenser unit and in a path of a refrigerant traveling from the compressor toward the condenser unit, wherein the oil separator is located distal from the condenser unit and proximal to the compressor and wherein the oil separator is fluidly coupled to the compressor and to the condenser unit to separate oil from the refrigerant at the floor.2. The air conditioning system of claim 1 , further comprising an air handler in fluid communication with the condenser unit and the compressor claim 1 , wherein the air handler is to be located at a second floor of the high-rise building that is below the floor where the compressor is located.3. The air conditioning system of claim 2 , further comprising a valve located proximal to the air handler to control refrigerant flow from the condenser unit to the air handler.4. The air conditioning system of claim 2 , wherein a suction line extends between the air handler and the compressor.5 ...

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Номер записи: 48
30-03-2017 дата публикации

APPARATUS AND METHOD FOR MONITORING STATE OF CRYOGENIC FREEZER

Номер: US20170089626A1
Автор: Seo Sung Bo, Song Je Min
Принадлежит:

Disclosed is an apparatus and a method for monitoring a state of a cryogenic freezer, the apparatus and the method being capable of determining a door ajar state, a power-off state, and an abnormal state of the first and the second compressors based on temperatures sensed by first, second, and third temperature sensors respectively mounted to a front lower surface of the cryogenic freezer and refrigerant pipes adjacent to outlets of the first and the second compressors, and displaying the states through a display unit and a mobile terminal when the cryogenic freezer is in the states. The apparatus for monitoring the state of the cryogenic freezer of the present invention includes: a first temperature sensor; second and third temperature sensors; a controller; and an output unit. 1. An apparatus for monitoring a state of a cryogenic freezer , the cryogenic freezer comprising: a first compressor compressing refrigerant into a high temperature and high pressure gaseous refrigerant; a condenser condensing the high temperature and high pressure gaseous refrigerant received from the first compressor into a low temperature and high pressure liquid refrigerant; a vapor filter connected to an outlet of the condenser and functioning to remove moisture of a refrigerant passage; a second compressor compressing a low temperature and low pressure gaseous refrigerant into a high temperature and high pressure gaseous refrigerant; a heat exchanger discharging the refrigerant to the first compressor by processing the refrigerant received from the vapor filter by heat exchange , and discharging a low temperature and high pressure liquid refrigerant by processing the refrigerant received from the second compressor by heat exchange; and an evaporator vaporizing the low temperature and high pressure liquid refrigerant received from the heat exchanger into a low temperature and low pressure gaseous refrigerant and discharging the gaseous refrigerant to the second compressor , wherein the ...

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Номер записи: 49
05-05-2022 дата публикации

NONFLAMMABLE REFRIGERANTS HAVING LOW GWP, AND SYSTEMS FOR AND METHODS OF PROVIDING REFRIGERATION

Номер: US20220135859A1
Автор: Close Joshua, HULSE RYAN, POTTKER Gustavo, SETHI Ankit, Yana Motta Samuel F.
Принадлежит: HONEYWELL INTERNATIONAL INC.

The present invention provides a refrigerant composition comprising: (a) from about 65% by weight to about 90% by weight of HFO-1234ze(E); (b) from about 10% by weight to about 35% by weight of HFO-1336mzz (E); and optionally (c) from about 0% to about 4.4% by weight of HFC-227ea for use in a variety of refrigeration applications, including air conditioning and/or refrigeration and particularly cooling products such as fruits, vegetables and beverages without exposing those articles to temperatures below the freezing point of water.

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Номер записи: 50
05-05-2022 дата публикации

REFRIGERATION DEVICE, TEMPERATURE SENSOR MOUNTING PIPE, AND TEMPERATURE SENSOR MOUNTING STRUCTURE

Номер: US20220136752A1
Автор: SUTO Minoru, Toyooka Takashi
Принадлежит:

This refrigeration device comprises: a high temperature side refrigerant circuit in which a high temperature side refrigerant circulates; a low temperature side refrigerant circuit in which a low temperature side refrigerant circulates; and a cascade heat exchanger that cools the low temperature side refrigerant with the high temperature side refrigerant. In the low temperature side refrigerant circuit, a low temperature side decompressor is disposed downstream of the cascade heat exchanger and a temperature sensor is installed in a piping portion between the cascade heat exchanger and the low temperature side decompressor.

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Номер записи: 51
28-03-2019 дата публикации

Test chamber

Номер: US20190093926A1
Автор: Christian Haack, Gerald Klee
Принадлежит: WEISS UMWELTTECHNIK GMBH

A test chamber ( 10 ) for conditioning air has a test space ( 12 ), and a temperature control device ( 11 ) for controlling the temperature of the test space and allowing a temperature in a range of −80° C. to +180° C., preferably −100° C. to +200° C., to be established within the test space, the temperature control device having a cooling device ( 16 ) with a cooling circuit ( 17 ), a heat exchanger ( 18 ), a compressor ( 19 ), a condenser ( 20 ), and an expansion element ( 21 ), wherein the refrigerant is a nearly azeotropic and/or zeotropic refrigerant mixture of a mass percentage of carbon dioxide and a mass percentage of at least one of the components ethane, ethene, hexafluoroethane, pentafluoroethane, monofluoroethane, 1,1-difluoroethene, fluoromethane and/or propane and/or xenon, the refrigerant having a relative CO 2 equivalent of <3000, preferably <500, in particular preferably <10, with respect to 20 years.

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Номер записи: 52
26-03-2020 дата публикации

Methods to Reduce Chlorophyll Co-Extraction Through Extraction of Select Moieties Essential Oils and Aromatic Isolates

Номер: US20200094163A1
Автор: Galyuk Yevgeniy
Принадлежит:

A system, machines and methods for extracting select moieties, flavonoids, and essential oils from plant material without co-extracting chlorophyll, lipids and other undesirable constituents from plants. Super-cooled extraction techniques are taught. Likewise, according to embodiments methods provides 100% grain ethyl alcohol extract with a concentration of chlorophyll that is below 1%. 1. A safer and more reliable extraction process for extracting a plant substrate comprising , in combination ,(i) pre-processing comprising lowering the temperature of a solvent to a range of −30 degrees C. to −50 degrees C.,(ii) contacting at −30 degrees C. to −50 degrees C., wherein there is a contacting time between the plant substrate and the solvent to create an emulsion,(iii) evaporating for reduction of the emulsion by means of atmospheric evaporation of the solvent,(iv) recovering for recovery of the solvent from the emulsion, wherein optionally,', '(a) the solvent is not 100% grain alcohol, or', '(b) wherein the solvent is 95% ethanol and 5% of a solvent that is another solvent that does not comprise ethanol, or', '(c) the solvent is at least one solvent-like material selected from the group consisting essentially of heptane, hexane, isopropyl alcohol, or methanol, or', '(d) wherein the solvent is not 100% ethanol., '(v) purging whereby a resultory extract is substantially free of any lipids and chlorophyll,'}2. The extraction process of claim 1 , wherein the solvent is not 100% grain alcohol.3. The extraction process of claim 1 , wherein the solvent is 95% ethanol and 5% of a solvent that is another solvent that does not comprise ethanol.4. The extraction process of claim 1 , wherein the solvent is at least one solvent-like material selected from the group consisting essentially of heptane claim 1 , hexane claim 1 , isopropyl alcohol claim 1 , or methanol.5. A plant substrate extract produced by the safer and more reliable extraction process of .6. A composition that ...

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Номер записи: 53
03-07-2014 дата публикации

REFRIGERATING APPARATUS

Номер: US20140182327A1
Автор: Kobayashi Susumu, OKUDA Satoshi, SAGA Tadahisa, SHINYA Hidetoshi, YUZAWA Jiro
Принадлежит: PANASONIC HEALTHCARE CO., LTD.

A refrigerating apparatus includes an insulation housing including an inner box. The inner box has side plates and first and second refrigerating circuits including a first evaporation pipe and a second evaporation pipe, respectively. The first and second evaporation pipes are disposed on the side plates. The first and second evaporation pipes are bent so as to form a first comb shape and a second comb shape, respectively. The first and the second comb shapes form a nested structure. The first and second evaporation pipes include a first straight portion and a second straight portion extending the horizontal direction, respectively. A first distance between the first straight portion of the first evaporation pipe and the first straight portion of the second evaporation pipe and a second distance between the first straight portion of the second evaporation pipe and the second straight portion of the second evaporation pipe are substantially equal. 1. A refrigerating apparatus comprising:an insulation housing including an inner box, the inner box having side plates;a first refrigerating circuit including a first compressor and a first evaporator constituted by a first evaporation pipe; anda second refrigerating circuit including a second compressor and second evaporator constituted by a second evaporation pipe, wherein:the first and second evaporation pipes are disposed on the side plates of the inner box,the first evaporation pipe is bent so as to form a first comb shape on the side plates and the second evaporation pipe is bent so as to form a second comb shape on the side plates, the first comb shape and the second comb shape forming a nested structure, and the first evaporation pipe includes a first straight portion extending a horizontal direction, a second straight portion extending the horizontal direction and a corner portion connecting the first and second straight portions of the first evaporation pipe,', 'the second evaporation pipe includes a first ...

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Номер записи: 54
03-07-2014 дата публикации

REFRIGERATING APPARATUS

Номер: US20140182328A1
Автор: Kobayashi Susumu, OKUDA Satoshi, SAGA Tadahisa, SHINYA Hidetoshi, YUZAWA Jiro
Принадлежит: PANASONIC HEALTHCARE CO., LTD.

A refrigerating apparatus includes an insulation housing including an inner box. The inner box has first and second side plates and a first curved corner connecting the first and second side plates; and a first refrigerating circuit including a first compressor and a first evaporator constituted by a first evaporation pipe, the first evaporation pipe including a first portion extending a horizontal direction and a second portion extending a vertical direction. The first portion of the first evaporation pipe is disposed to contact to the first and second side plates and the first curved corner of the inner box, and the second portion of the first evaporation pipe is disposed outside of the first portion of the first evaporation pipe at the first curved corner so that the first portion of the first evaporation pipe locates between the first curved corner and the second portion of the first evaporation pipe. 1. A refrigerating apparatus comprising:an insulation housing including an inner box, the inner box having a first side plate, a second side plate and a first curved corner connecting the first and second side plates; anda first refrigerating circuit including a first compressor and a first evaporator constituted by a first evaporation pipe, the first evaporation pipe including a first portion extending a horizontal direction and a second portion extending a vertical direction, wherein:the first portion of the first evaporation pipe is disposed so as to contact to the first and second side plates and the first curved corner of the inner box, andthe second portion of the first evaporation pipe is disposed outside of the first portion of the first evaporation pipe at the first curved corner so that the first portion of the first evaporation pipe locates between the first curved corner and the second portion of the first evaporation pipe.2. The refrigerating apparatus of claim 1 , further comprising:a second refrigerating circuit including a second compressor and a ...

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Номер записи: 55
12-04-2018 дата публикации

HEAT EXCHANGER FOR A HVAC UNIT

Номер: US20180100675A1
Автор: Caskey Curtis W., Karkhanis Rajiv K., Kester Douglas A., Mislak Nicholas P., Smith Troy E., Snider Ryan L., Stockton Kevin R., Yelamanchili Chandra S.
Принадлежит:

A heating, ventilating, and air conditioning (HVAC) system includes a refrigerant loop having a compressor, where the compressor is configured to circulate a refrigerant through the refrigerant loop, a first heat exchanger disposed along the refrigerant loop, where the first heat exchanger is configured to place the refrigerant in a first heat exchange relationship with a working fluid, and an air handling unit having a second heat exchanger, where the second heat exchanger is configured to place the working fluid in a second heat exchange relationship with an airflow, and where the air handling unit is isolated from the first heat exchanger to reduce or eliminate mixing of refrigerant with the airflow. 1. A heating , ventilating , and air conditioning (HVAC) system , comprising:a refrigerant loop comprising a compressor, wherein the compressor is configured to circulate a refrigerant through the refrigerant loop;a first heat exchanger disposed along the refrigerant loop, wherein the first heat exchanger is configured to place the refrigerant in a first heat exchange relationship with a working fluid; andan air handling unit comprising a second heat exchanger, wherein the second heat exchanger is configured to place the working fluid in a second heat exchange relationship with an airflow, and wherein the air handling unit is isolated from the first heat exchanger to reduce or eliminate mixing of refrigerant with the airflow.2. The HVAC system of claim 1 , wherein the refrigerant comprises R32 claim 1 , R534 claim 1 , R290 claim 1 , R452B claim 1 , R455A claim 1 , R1234yf claim 1 , ammonia claim 1 , or a combination thereof.3. The HVAC system of claim 1 , comprising a housing and a barrier positioned within the housing claim 1 , wherein the barrier is configured to isolate the first heat exchanger from the air handling unit.4. The HVAC system of claim 3 , wherein the barrier is configured to block the refrigerant from flowing toward the air handling unit claim 3 , ...

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Номер записи: 56
12-05-2022 дата публикации

THERMAL MANAGEMENT SYSTEM WITH DUAL-USE SERIAL THERMAL ENERGY STORAGE FOR SYSTEM SIZE REDUCTION

Номер: US20220151102A1
Автор: Snyder Douglas J.
Принадлежит: Rolls-Royce North American Technologies Inc.

Thermal management systems for cooling high-power, low-duty-cycle thermal loads by rejecting heat from the thermal loads to the ambient environment are provided. The thermal management systems include a two-phase pump loop in fluid communication with a vapor compression system loop, evaporators disposed in parallel between the two-phase pump loop and the vapor compression system loop, and a thermal energy storage loop including a cold-temperature tank and a warm-temperature tank thermally coupled to the two-phase pump loop and the vapor-compression system loop. Methods of transferring heat from one or more thermal loads to an ambient environment are also provided. 1. A thermal management system , comprising:a thermal energy storage (“TES”) loop comprising a TES medium disposed in the TES loop, a TPPL condenser, a first tank, a first liquid pump, a first TES evaporator, a second tank, and a second liquid pump; anda primary fluid flow path comprising a primary fluid disposed in the primary fluid flow path, a two-phase pump loop (“TPPL”), a vapor compression system (“VCS”) loop, an accumulator, and a first-TES-evaporator branch; andwherein the TPPL is configured to cool a primary thermal load, the TPPL comprising a TPPL liquid pump and the TPPL condenser, the TPPL condenser configured to transfer heat from the primary fluid in the TPPL to the TES medium;wherein the VCS loop is configured to transfer heat from the primary fluid in the primary fluid flow path to an ambient environment via a VCS condenser;wherein the accumulator is configured to separate the primary fluid received from the TPPL and the VCS loop into a vapor-phase primary fluid and a liquid-phase primary fluid;wherein the first-TES-evaporator branch comprises the first TES evaporator and is in fluid communication with the TPPL downstream of the accumulator and with the VCS loop upstream of the compressor, wherein the first TES evaporator is configured to transfer heat from the TES medium to the VCS loop; ...

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Номер записи: 57
19-04-2018 дата публикации

DC REFRIGERATION SYSTEM CONTROLS

Номер: US20180106510A1
Автор: BARTHELMESS Blake, Brown Scott, HARTMANN Tor, McGRAW Donald
Принадлежит: SolarXWorks, LLC

A DC-powered refrigeration system may include controls configured to switch between available DC power supplies and manage the refrigeration system in accordance with one or more methods. The one or more methods of the control system may include multiple tiers of power management, including, e.g., maximization of power usage when on a photovoltaic power supply to subcool a refrigerated load. 1. A refrigeration control system comprising:one or more processors;a memory comprising one or more storage devices; and determine when DC power is provided to a refrigeration system by a photovoltaic (PV) source;', 'when DC power is provided by the PV source, maximize power consumption by the refrigeration system by causing continuous operation of one or more electrical motors of the refrigeration system, such that cooling of a chamber of the refrigeration system is limited only by a refrigerant capacity of the refrigeration system; and', 'when DC power is provided by a non-PV source, manage power consumption by cycling the one or motors to maintain a temperature range in the chamber., 'a control program including a plurality of instructions stored in the memory and executable by the one or more processors to2. The system of claim 1 , further comprising a mass disposed in the chamber claim 1 , wherein causing continuous operation of the one or more electrical motors of the refrigeration system causes the mass to be subcooled.3. The system of claim 2 , wherein the mass comprises a solid.4. The system of claim 1 , wherein cooling of the chamber continues below a freezing temperature.5. The system of claim 1 , wherein the plurality of instructions are further executed by the one or more processors to adjust a speed of the one or more motors of the refrigeration system.6. The system of claim 5 , wherein the speed is adjusted to maximize power consumption when using PV power and adjusted to minimize a rate of temperature change when using non-PV power.7. The system of claim 1 , ...

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Номер записи: 58
20-04-2017 дата публикации

REFRIGERATION CYCLE APPARATUS AND METHOD FOR CONTROLLING REFRIGERATION CYCLE APPARATUS

Номер: US20170108247A1
Автор: ARII Yusuke, Ikeda Takashi, Ishikawa Tomotaka, SATA Hiroshi
Принадлежит:

A refrigeration cycle apparatus includes: a low-stage refrigeration cycle including a low-stage compressor, a low-stage condenser, a low-stage pressure reducing device, and a low-stage evaporator, and circulating low-stage refrigerant; a high-stage refrigeration cycle including a high-stage compressor, a high-stage condenser, a high-stage pressure reducing device, and a high-stage evaporator, and circulating high-stage refrigerant; a cascade condenser exchanging heat between the low-stage refrigerant in the low-stage condenser and the high-stage refrigerant in the high-stage evaporator, and a controller. The low-stage refrigerant is a refrigerant that undergoes disproportionation. The low-stage refrigerant is maintained at a pressure lower than a disproportionation pressure at which the low-stage refrigerant undergoes disproportionation. 1. A refrigeration cycle apparatus comprising:a low-stage refrigeration cycle including a low-stage compressor, a low-stage condenser, a low-stage pressure reducing device, and a low-stage evaporator, and circulating low-stage refrigerant;a high-stage refrigeration cycle including a high-stage compressor, a high-stage condenser, a high-stage pressure reducing device, and a high-stage evaporator, and circulating high-stage refrigerant;a cascade condenser configured to exchange heat between the low-stage refrigerant in the low-stage condenser and the high-stage refrigerant in the high-stage evaporator; anda controller,the low-stage refrigerant being a refrigerant that undergoes disproportionation,the low-stage refrigerant being maintained at a pressure lower than a disproportionation pressure at which the low-stage refrigerant undergoes disproportionation.2. The refrigeration cycle apparatus of claim 1 , wherein the controller is configured to change a low-pressure side pressure of the high-stage refrigeration cycle to maintain the low-stage refrigerant at a pressure lower than the disproportionation pressure of the low-stage ...

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Номер записи: 59
29-04-2021 дата публикации

Two Stage Condensing and Metering Refrigeration System

Номер: US20210123645A1
Автор: ZHONG Lei
Принадлежит:

A refrigeration system, includes a main refrigeration system. The main refrigeration system includes a main refrigerant, a main compressor, a main condenser coil, a pre-metering device, a main metering device, a main evaporator, and a secondary refrigeration system. In flow sequence, the main refrigerant within the main refrigeration system is compressed by the main compressor, condensed by the main condenser coil, dropped in pressure by the pre-metering device, cooled by the secondary refrigeration system, dropped in pressure by the main metering device, vaporized by the main evaporator and returned to the main compressor. The secondary refrigeration system includes a secondary refrigerant, a secondary compressor, a secondary condenser coil, a secondary metering device, a secondary evaporator having a main refrigerant cooling path and a secondary refrigerant evaporator path in heat transfer communication. In flow sequence, the secondary refrigerant in the secondary refrigeration system is compressed by the secondary compressor, condensed by the secondary condenser coil, dropped in pressure by the secondary metering device, and vaporized by the evaporator path by heat transfer from the cooling path carrying the main refrigerant, and returned to the secondary compressor. The main condenser coil and the secondary condenser coil are located together in a housing to be cooled by the same flowing media. The secondary evaporator is a co-axial pipe heat exchanger. 1. A refrigeration system , comprising:a main refrigeration system including a main refrigerant, a main compressor, a main condenser coil, a pre-metering device, a main metering device, a main evaporator, and a secondary refrigeration system;wherein an outlet of the main compressor is main-refrigerant-flow-connected to the main condenser coil, the main condenser coil is main-refrigerant-flow-connected to the pre-metering device, the pre-metering device is main-refrigerant-flow-connected to the secondary ...

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Номер записи: 60
09-06-2022 дата публикации

Heat transport system

Номер: US20220178591A1
Автор: Hiromune Matsuoka, Kyou TOMIKAWA, Ryuusuke Fujiyoshi, Yoshihiko Hagiwara
Принадлежит: Daikin Industries Ltd

A heat transport system includes: a refrigerant circuit that seals therein a fluid including HFC-32 and/or HFO refrigerant as a refrigerant and that includes a refrigerant booster that boosts the refrigerant, an outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air, a medium heat exchanger that exchanges heat between the refrigerant and a heat transfer medium, and a refrigerant flow path switch that switches between a refrigerant radiation state and a refrigerant evaporation state; and a medium circuit that seals carbon dioxide therein as the heat transfer medium.

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Номер записи: 61
07-05-2015 дата публикации

Refrigeration cycle of refrigerator

Номер: US20150121940A1
Автор: Dongseok Kim, Taehee Lee
Принадлежит: LG ELECTRONICS INC

Provided is a refrigeration cycle of a refrigerator. The refrigeration cycle of a refrigerator including a first refrigeration cycle in which a first refrigerant flows along a first refrigerant tube and a second refrigeration cycle in which a second refrigerant flows along a second refrigerant tube includes first and second compressors compressing each of the first and second refrigerants into a high-temperature high-pressure gaseous refrigerant, a combined condenser condensing each of the first and second refrigerants passing through the first and second compressors into a high-temperature high-pressure liquid refrigerant, first and second expansion valves phase-changing each of the first and second refrigerants passing through the combined condenser into a low-temperature low-pressure two-phase refrigerant, and first and second evaporators changing the refrigerant passing through each of the first and second expansion valves into a low-temperature low-pressure gaseous refrigerant.

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Номер записи: 62
09-04-2020 дата публикации

COOLING SYSTEMS AND METHODS INCORPORATING A PLURAL IN-SERIES PUMPED LIQUID REFRIGERANT TRIM EVAPORATOR CYCLE

Номер: US20200109880A1
Автор: Keisling Earl, McDonnell Gerald
Принадлежит:

The cooling systems and methods of the present disclosure relate to a plural in-series pumped liquid refrigerant trim evaporator cycle that may be incorporated into an existing cooling system to increase the efficiency of the existing cooling system. The cooling systems of the present disclosure include a first evaporator coil in thermal communication with an air intake flow to a heat load, such as a heat load being cooled by the existing cooling system, and a first liquid refrigerant distribution unit in thermal communication with the first evaporator coil. The cooling systems further includes a second evaporator coil disposed in series with the first evaporator coil in the air intake flow and in thermal communication with the air intake flow, and a second liquid refrigerant distribution unit in thermal communication with the second evaporator coil. A trim compression cycle of the second liquid refrigerant distribution unit is configured to incrementally further cool the air intake flow through the second evaporator coil when the temperature of the free-cooled first fluid flowing out of the main compressor of the second liquid refrigerant distribution unit exceeds a predetermined threshold temperature. 1a first evaporator coil in thermal communication with an air intake flow to a heat load;a first liquid refrigerant distribution unit in thermal communication with the first evaporator coil and a first fluid free-cooled by a fluid cooler;a second evaporator coil disposed in series with the first evaporator coil in the air intake flow and in thermal communication with the air intake flow to the heat load;a second liquid refrigerant distribution unit in thermal communication with the second evaporator coil and the first fluid free-cooled by the fluid cooler; andwherein a trim compression cycle of the second liquid refrigerant distribution unit is configured to incrementally further cool the air intake flow through the second evaporator coil when the temperature of the ...

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Номер записи: 63
13-05-2021 дата публикации

Automatic Maintenance and Flow Control of Heat Exchanger

Номер: US20210140695A1
Автор: Acosta Gonzalez Marcelo Javier, Hum Redmond, Patel Ritesh, Terzic Zeljko
Принадлежит:

A heat transfer system that includes one or more heat exchangers and one or more control pumps that control flow through the heat exchangers. In order to source a variable load, the control pumps can be controlled to operate at less than full duty flow. In an example embodiment, a controller can calculate, when each heat exchanger is clean, coefficient values of each respective heat exchanger. The controller can determine, during real-time operation, real-time coefficient values of the heat exchanger to compare with the respective coefficient values when clean, in order to determine whether there is fouling in that heat exchanger. In some examples, the controller can determine that maintenance is required on the heat exchanger due to the fouling, and perform flushing of the heat exchanger by operating one or more of the control pumps at full duty load during real-time operation to source the variable load. 1. A heat transfer system for sourcing a variable load , comprising:a heat exchanger that defines a first fluid path and a second fluid path;a first variable control pump for providing variable flow of a first circulation medium through the first fluid path of the heat exchanger;at least one controller configured for:controlling the first variable control pump to control the first circulation medium through the heat exchanger in order to source the variable load,determining, based on real-time operation measurement when sourcing the variable load, that the heat exchanger requires maintenance due to fouling of the heat exchanger, andin response to said determining, controlling the first variable control pump, to a first flow amount of the first circulation medium in order to flush the fouling of the heat exchanger.2. The system as claimed in claim 1 , wherein the controlling the first variable control pump to the first flow amount in order to flush the fouling of the heat exchanger is performed during real-time sourcing of the variable load.3. The system as claimed ...

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Номер записи: 64
03-05-2018 дата публикации

TEST CHAMBER

Номер: US20180120003A1
Автор: Haack Christian, Teichmann Johannes
Принадлежит:

A test chamber for conditioning air has a temperature-insulated test space sealable against an environment for receiving test materials and a temperature control device for controlling the temperature of the test space, a temperature ranging from −20° C. to +180° C. in temperature being able to be realized within the test space by means of the temperature control device, said temperature control device comprising a cooling device having a cooling cycle having a refrigerant, a heat transmitter, a compressor, a condenser and an expanding element, the cooling cycle comprising an internal heat transmitter, the internal heat transmitter being connected to a high-pressure side of the cooling cycle upstream of the expanding element and downstream of the condenser in a flow direction, said refrigerant being able to cooled by means of the internal heat transmitter which is coupled to an adjustable supplementary refrigeration of the cooling device. 110415611425712451355621444631571. A test chamber for conditioning air , comprising a temperature-insulated test space sealable against an environment for receiving test materials and a temperature control device for controlling the temperature of the test space , a temperature ranging from −20° C. to +180° C. in temperature being able to be realized within the test space by means of the temperature control device , said temperature control device comprising a cooling device ( , , ) having a cooling cycle ( , , ) having a refrigerant , a heat transmitter ( , ) , a compressor ( , , ) , a condenser ( , , ) and an expanding element ( , ) ,characterized in that{'b': 24', '47', '64', '18', '65, 'the cooling cycle comprises an internal heat transmitter (, , ), the internal heat transmitter being connected to a high-pressure side (, ) of the cooling cycle upstream of the expanding element and downstream of the condenser in a flow direction, said refrigerant being able to be cooled by means of the internal heat transmitter which is coupled ...

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Номер записи: 65
25-08-2022 дата публикации

METHOD AND SYSTEM FOR OPERATING A REFRIGERATION SYSTEM

Номер: US20220268502A1
Автор: SMITH Kellen R.
Принадлежит:

A refrigeration system includes a refrigerated cavity, a first compression system, and a second compression system. The refrigeration system further includes a controller configured to operate the refrigeration system in a first mode in which the first compression system and the second compression system operate to cool the refrigerated cavity. The refrigeration system is further configured to selectively operate the refrigeration system in a second mode in which a refrigerant discharged from the second compressor is routed through the first evaporator to defrost the first evaporator. 1. A refrigeration system comprising:a refrigerated cavity;a first compression system comprising a first compressor, and a first evaporator;a second compression system comprising a second compressor; and operate the refrigeration system in a first mode in which at least one of the first compression system or the second compression system operates to cool the refrigerated cavity to a temperature;', 'selectively operate the refrigeration system in a second mode in which the second compression system operates to discharge a refrigerant from the second compressor, wherein the refrigerant is routed through the first evaporator to defrost the first evaporator; and', 'switch the refrigeration system between the first mode and the second mode based upon a parameter., 'a controller configured to2. The refrigeration system of claim 1 , wherein the second compression system further comprises a cold wall system claim 1 , and the controller is configured to operate the second compression system to defrost the first evaporator while storing cold energy in the cold wall system during the second mode.3. The refrigeration system of claim 2 , wherein the cold wall system is configured to cool the refrigerated cavity to the temperature during the first mode.4. The refrigeration system of claim 2 , wherein the cold wall system includes at least one eutectic plate.5. The refrigeration system of claim 2 , ...

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Номер записи: 66
25-04-2019 дата публикации

System and Method for Cryogenic Cooling

Номер: US20190120528A1
Автор: "ONeil James A.", Bartlett Allen J., Collins Mark, Eacobacci Michael J., Johnson William, Syssoev Sergei
Принадлежит:

A heat exchanger within an insulated enclosure receives primary refrigerant at a high pressure and cools the primary refrigerant using a secondary refrigerant from a secondary refrigeration system. An expansion unit within the insulated enclosure receives the primary refrigerant at the high pressure from the heat exchanger and discharges the primary refrigerant at a low pressure. A supply line delivers the primary refrigerant at the low pressure to the load and a return line returns the primary refrigerant from the load to the primary refrigeration system. A system control unit controls operation of at least one of the primary refrigeration system and the secondary refrigeration system to provide a variable refrigeration capacity to the load based on at least one of: a pressure of the primary refrigerant delivered to the load, and at least one temperature of the load. 1. A system for providing a cooling refrigerant to a load , the system comprising: a compressor taking in the refrigerant at a low pressure and discharging the refrigerant at a high pressure;', 'an expansion valve receiving the refrigerant at the high pressure from the compressor and discharging the refrigerant at the low pressure to an insulated enclosure,', 'the insulated enclosure comprising an inlet receiving the refrigerant from the expansion valve and an outlet returning the refrigerant at the low pressure to the compressor;', 'at least one heat exchanger within the insulated enclosure receiving the refrigerant at the low pressure and cooling the refrigerant using a secondary refrigeration system in heat exchange relationship with the refrigerant;', 'a supply line delivering the refrigerant at the low pressure to the load and a return line returning the refrigerant from the load to the primary refrigeration system;, 'a closed loop primary refrigeration system comprising'}the secondary refrigeration system, wherein the secondary refrigeration system comprises at least one secondary cryogenic ...

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Номер записи: 67
25-04-2019 дата публикации

CONTROL METHOD FOR REFRIGERATOR

Номер: US20190120533A1
Автор: CHO Yonghyeon, HONG Taehwa, IM Jihyun, KANG SungHee, KIM Hyuksoon, Kim Jindong, LEE Namgyo, Nam Yoonseong
Принадлежит: LG ELECTRONICS INC.

A control method for a refrigerator comprises: decreasing an output of at least one of a cold air supply means for a first storage chamber or stopping the cold air supply means, if a sensed temperature of the first storage chamber reaches a value less than or equal to a second reference temperature; increasing the output, if a certain time has passed after the temperature has reached the value less than or equal to the second reference temperature, or if the temperature reaches a first specific value between a first reference temperature and the second reference temperature; and decreasing the output or stopping the cold air supply means, if a certain time has passed after the output of the air supply means has been changed in a previous step, or if the temperature reaches a preset second specific value between the first specific value and the second reference temperature. 1. A method for controlling a refrigerator comprising a first compressor and a second compressor , which compress a refrigerant , a first evaporator receiving the refrigerant from the first compressor to generate cold air for cooling a first storage chamber , a first cooling fan for supplying the cold air into the first storage chamber , a second evaporator receiving the cold air from the second compressor to generate cold air for cooling the second storage chamber , and a second cooling fan for supplying the cold air into the second storage chamber , wherein a cooling cycle of the first storage chamber and a cooling cycle of the second storage chamber operate at the same time or alternately operate , the method comprising:sensing a temperature of the first storage chamber;increasing an output of a cold air supply means for the first storage chamber when the sensed temperature of the first storage chamber reaches a value that is equal to or above a first reference temperature for the first storage chamber;decreasing at least one output of the cold air supply means for the first storage chamber, or ...

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Номер записи: 68
16-04-2020 дата публикации

REFRIGERATION CYCLE APPARATUS

Номер: US20200116396A1
Автор: Ito Masahiro, Nomoto So
Принадлежит:

During a first cooling operation, a compressor is in an operational state, a liquid pump is in a non-operational state, and an amount of refrigerant allowing for existence of a liquid surface of the refrigerant in a refrigerant tank is accumulated in the refrigerant tank. During a second cooling operation, the compressor is in the non-operational state, the liquid pump is in the operational state, and the amount of the refrigerant allowing for the liquid surface of the refrigerant in the refrigerant tank is accumulated in the refrigerant tank. 1. A refrigeration cycle apparatus comprising a refrigerant circuit , wherein a compressor configured to compress refrigerant,', 'an air heat exchanger configured to exchange heat between air and the refrigerant,', 'a first throttle device,', 'a water heat exchanger configured to exchange heat between the refrigerant and water,', 'a refrigerant tank and a liquid pump each connected to the first throttle device in parallel,', 'a bypass pipe connected to the compressor in parallel, and', 'a bypass valve configured to adjust an amount of the refrigerant flowing in the bypass pipe,, 'the refrigerant circuit comprises'}during a first cooling operation, the compressor is in an operational state, the liquid pump is in a non-operational state, and an amount of the refrigerant allowing for existence of a liquid surface of the refrigerant in the refrigerant tank is accumulated in the refrigerant tank, andduring a second cooling operation, the compressor is in the non-operational state, the liquid pump is in the operational state, and the amount of the refrigerant allowing for the existence of the liquid surface of the refrigerant in the refrigerant tank is accumulated in the refrigerant tank.2. The refrigeration cycle apparatus according to claim 1 , wherein the first cooling operation is performed when a temperature of outside air is more than or equal to a threshold value claim 1 , and the second cooling operation is performed when ...

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Номер записи: 69
19-05-2016 дата публикации

HEAT PUMP ARRANGEMENT AND METHOD FOR OPERATING HEAT PUMP ARRANGEMENT

Номер: US20160138837A1
Автор: Gromoll Bernd, REISSNER Florian, Schäfer Jochen
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A heat pump arrangement including a first heat pump through which a first fluid flows, a second heat pump through which a second fluid flows, and a heat exchanger to transfer heat from the first fluid to the second fluid. The heat is transferred from the first fluid to the second fluid at a fluid temperature of at least 120° C. for the second fluid. The first fluid and the second fluid each have a volumetric heating capacity of at least 500 kJ/m3 when the heat is transferred from the first fluid to the second fluid. Useful heat is extracted from the second fluid at a fluid temperature of at least 120° C. for the second fluid, and the first fluid and the second fluid each have a volumetric heating capacity of at least 500 kJ/mwhen the useful heat is extracted. 110-. (canceled)11. A method for operating a heat pump system in which a first fluid flows through a first heat pump , a second fluid flows through a second heat pump , and heat is transferred from the first fluid to the second fluid using a heat exchanger , the method comprising:{'sup': '3', 'extracting useful heat from the second fluid at a fluid temperature of at least 120° C. for the second fluid, the first fluid and the second fluid each having a volumetric heating capacity of at least 500 kJ/mwhen the useful heat is extracted.'}12. The method as claimed in claim 11 , wherein the useful heat is extracted from the second fluid at a fluid temperature of at least 150° C.13. The method as claimed in claim 12 , wherein the useful heat is extracted from the second fluid at a fluid temperature of at least 160° C.14. The method as claimed in claim 11 , wherein the first fluid is a fluoroketone.15. The method as claimed in claim 11 , wherein the second fluid is one of water and a fluoroketone.16. The method as claimed in claim 11 , wherein the first fluid and the second fluid are different fluids.17. The method as claimed in claim 11 , wherein the heat is transferred from the first fluid to the second fluid ...

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Номер записи: 70
19-05-2016 дата публикации

INTERCOOLER BYPASS

Номер: US20160138838A1
Автор: FREDENHAGEN Andreas, SIMROSS Dirk
Принадлежит:

A compressor system for compressing gases in a multistage compression includes a next-to-last compressor in a flow direction and a last compressor which are connected in series, one or more intercoolers between the next-to-last compressor and the last compressor, and an adsorption dryer connected downstream of the last compressor and designed as a rotation dryer having a rotating adsorption chamber. An inside of the adsorption chamber includes a regeneration sector and a drying sector. The regeneration sector is connected to the last compressor such that the compressed gas stream output from the last compressor is guided in a full stream principle through the regeneration sector. A bypass line which bypasses the intercoolers is situated between next-to-last compressor and last compressor, and includes a setting element to set the gas stream guided via the bypass line and therefore the regeneration entry temperature of the compressed gas in the regeneration sector appropriately. 118.-. (canceled)19. A compressor system for compressing gases in a multistage compression , the compressor system comprising:{'b': 11', '12', '11', '12', '11', '12, 'multiple compressors (, ) connected in series, the multiple compressors (, ) comprising at least one next-to-last compressor () in a flow direction and a last compressor () which defines a highest compressor stage within the multistage compression;'}{'b': 13', '11', '12, 'one or more intercoolers () between the at least one next-to-last compressor () and the last compressor (); and'}{'b': 16', '12', '16', '44', '17', '18, 'claim-text': [{'b': 17', '12', '12', '17', '16, 'wherein the regeneration sector () is connected to the last compressor () such that a compressed gas stream output from the last compressor () is guided according to a full stream principle through the regeneration sector () of the adsorption dryer (), and'}, {'b': 14', '13', '11', '12', '15', '14', '14', '17, 'sub': 'Ri', 'wherein a bypass line () which ...

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Номер записи: 71
08-09-2022 дата публикации

REFRIGERATION DEVICE AND SYSTEM

Номер: US20220282891A1
Автор: DELAUTRE Guillaume, Durand Fabien
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges Claude

Disclosed is a low-temperature refrigeration device comprising a working circuit that forms a loop and contains a working fluid the working circuit forming a cycle which includes, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, the device further comprising a refrigeration heat exchanger for extracting heat from at least one member by exchanging heat with the working fluid flowing in the working circuit, the compression mechanism comprising two separate compressors, the mechanism for cooling the working fluid comprising two cooling heat exchangers which are arranged respectively at the outlet of the two compressors and ensure heat exchange between the working fluid and a cooling fluid, each cooling heat exchanger comprising a cooling fluid inlet and a cooling fluid outlet, characterized in that the cooling fluid outlet of one of the two cooling heat exchangers is connected to the cooling fluid inlet of the other cooling heat exchanger. 17-. (canceled)8. A low-temperature refrigeration device for refrigeration at a temperature of between minus 100 degrees centigrade and minus 273 degrees centigrade , comprising a working circuit and a refrigeration heat exchanger , wherein:the working circuit forms a loop and contains a working fluid;the working circuit forms a cycle that comprises, in series: a compression mechanism for compressing the working fluid, a cooling mechanism for cooling the working fluid, an expanding mechanism for expanding the working fluid, and a heating mechanism for heating the working fluid;the compression mechanism comprises two separate compressors;the cooling mechanism comprises two cooling heat exchangers that are disposed respectively at the outlets of the two compressors and ensure heat exchange between the working fluid and a cooling fluid;each cooling heat exchanger comprises an inlet for cooling fluid and an outlet for cooling fluid;the outlet for cooling fluid of one of ...

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Номер записи: 72
14-08-2014 дата публикации

Ammonia Plant Upgrading-Multistage Integrated Chilling of Process Air Compressor with Ammonia Compressor Followed by Air Flow Split and Multistage Air Preheating to Secondary Ammonia Reformer

Номер: US20140223951A1
Автор: ARORA Vinod Kumar
Принадлежит:

This disclosure relates to an ammonia plant system upgrade utilizing both a direct and indirect multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of the ammonia plant as well as upgrades to provide more heating to the increased process air flow. 1. An ammonia plant system upgrade utilizing a direct multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of the ammonia plant comprising:a. a two stage suction air chiller in the air compression system that chills incoming air by heat exchange with expanded high pressure ammonia from the ammonia compression system of the ammonia plant;b. additional two stage air chillers between each of the air compressors of the air compression train, each air chiller chilling incoming air by heat exchange with expanded high pressure ammonia from the ammonia compression system of the ammonia plant.2. The ammonia plant system upgrade utilizing a direct multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of the ammonia plant of further comprising:a. a new steam preheater for heating the increased process air flow; i. the existing dedicated process air preheat coils of the secondary reformer;', 'ii. modified feed preheat convection coils of the secondary reformer; and', 'iii. modified boiler feedwater convection coils; and, 'b. wherein the preheated and increased production flow from the air compression train is separated into three streams which are further heated inc. wherein the combined heated three streams are fed to the secondary reformer.3. An ammonia plant system upgrade utilizing an indirect multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of the ammonia plant comprising:a. a two stage suction air chiller in ...

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Номер записи: 73
09-05-2019 дата публикации

REFRIGERATION SYSTEMS AND METHODS

Номер: US20190137147A1
Автор: PETERSEN Michael, POTTKER Gustavo, SETHI Ankit, VOGL RONALD PETER, Yana Motta Samuel F.
Принадлежит:

Disclosed are cascaded refrigeration systems, comprising: a plurality of refrigeration units, each refrigeration unit containing a first refrigeration circuit, each first refrigeration circuit comprising an evaporator and a heat exchanger; and a second refrigeration circuit; wherein each first circuit heat exchanger is arranged to transfer heat energy between its respective first refrigeration circuit and the second refrigeration circuit. 1. A cascaded refrigeration system comprising: (i) a flammable low temperature refrigerant having a GWP of about 150 or less;', '(ii) a compressor having a horse power rating of about 2 horse power or less; and', '(iii) a heat exchanger in which said flammable low temperature refrigerant condenses in the range of temperatures of from about −5° C. to about −15° C.; and, '(a) a plurality of low temperature refrigeration circuits, with each low temperature refrigeration circuit comprising(b) a medium temperature refrigeration circuit comprising a non-flammable medium temperature refrigerant evaporating at a temperature below said low temperature refrigerant condensing temperature and in the range of about −5° C. to about −15° C., wherein said medium temperature refrigerant evaporates in said heat exchanger by absorbing heat from said flammable refrigerant in said low temperature refrigeration circuit.2. The cascaded refrigeration system of claim 1 , wherein each refrigeration circuit is in a modular refrigeration unit and wherein at least one of said modular refrigeration units is located in a first area open to the public.3. The cascaded refrigeration system of claim 2 , wherein the second refrigeration circuit includes portions that extend the second refrigeration circuit between the first area and a second area.4. The cascaded refrigeration system of claim 3 , wherein the second area is a machine room.5. The cascaded refrigeration system of claim 4 , wherein the second refrigeration circuit includes portions that extend the second ...

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Номер записи: 74
04-06-2015 дата публикации

REFRIGERATION APPARATUS

Номер: US20150153076A1
Автор: Ikeda Takashi, Ishikawa Tomotaka, Nomoto So, Sugimoto Takeshi, Takayama Keisuke
Принадлежит: Mitsubishi Electric Corporation

A refrigeration apparatus includes a high-temperature side circulation circuit and a low-temperature side circulation circuit. The high-temperature side circulation circuit A is configured by connecting a high-temperature side compressor, a high-temperature side condenser, a high-temperature side expansion valve, and a high-temperature side evaporator of a cascade heat exchanger to one another. The low-temperature side circulation circuit is configured by connecting a low-temperature side compressor, a low-temperature side condenser of the cascade heat exchanger, a receiver that stores a liquid refrigerant, a solenoid valve, a low-temperature side expansion valve, and a low-temperature side evaporator to one another. A refrigerant in the low-temperature side circulation circuit includes a zeotropic refrigerant mixture containing at least COand R32. The content of R32 in the entire zeotropic refrigerant mixture is 50% to 74% by mass, and the GWP of the zeotropic refrigerant mixture is equal to or less than 500. 1. A refrigeration apparatus comprising:a high-temperature side circulation circuit configured by connecting a high-temperature side compressor, a high-temperature side condenser, a high-temperature side expansion valve, and a high-temperature side evaporator of a cascade heat exchanger to one another; anda low-temperature side circulation circuit configured by connecting a low-temperature side compressor, a low-temperature side condenser of the cascade heat exchanger, a receiver that stores a liquid refrigerant, a solenoid valve, a low-temperature side expansion valve, and a low-temperature side evaporator to one another, wherein{'sub': '2', 'a refrigerant in the low-temperature side circulation circuit includes a zeotropic refrigerant mixture containing at least COand R32,'}a content of R32 in the entire zeotropic refrigerant mixture is 50% to 74% by mass, anda GWP of the zeotropic refrigerant mixture is not more than 500.2. The refrigeration apparatus of ...

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Номер записи: 75
04-06-2015 дата публикации

BINARY REFRIGERATION APPARATUS

Номер: US20150153086A1
Автор: Ikeda Takashi, Ishikawa Tomotaka, Sugimoto Takeshi, Takayama Keisuke, Yamashita Tetsuya
Принадлежит: Mitsubishi Electric Corportion

A two-stage refrigeration apparatus includes a high-stage refrigeration cycle including a high-stage-side refrigerant circuit including a high-stage-side compressor, high-stage-side condenser, high-stage-side expansion valve, and high-stage-side evaporator connected by pipes, a low-stage refrigeration cycle including a low-stage-side refrigerant circuit including a low-stage-side compressor, low-stage-side condenser, low-stage-side receiver, low-stage-side expansion valve, and low-stage-side evaporator connected by pipes, a cascade condenser including the high-stage-side evaporator and low-stage-side condenser, a receiver heat exchanging portion configured to cool the low-stage-side receiver, and a high-stage refrigeration cycle controller configured to perform controlling so as to activate the high-stage-side compressor when estimating a low-stage-side refrigerant will reach a supercritical state when the low-stage-side compressor is inactive on the basis of the pressure of the low-stage-side refrigerant. 1. A two-stage refrigeration apparatus comprising:a first refrigeration cycle device including a first refrigerant circuit in which a first compressor, a first condenser, a first expansion device, and a first evaporator are connected by pipes, the first refrigerant circuit circulating a first refrigerant;a second refrigeration cycle device including a second refrigerant circuit in which a second compressor, a second condenser, a receiver, a second expansion device, and a second evaporator are connected by pipes, the second refrigerant circuit circulating a second refrigerant;a cascade condenser including the first evaporator and the second condenser and configured to cause the first refrigerant flowing in the first evaporator and the second refrigerant flowing in the second condenser to exchange heat with each other;a receiver heat exchanging portion configured to cool the receiver by heat exchange with a portion in which the first refrigerant being low-pressure ...

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Номер записи: 76
15-09-2022 дата публикации

Load Balancing Method for Two Compressors

Номер: US20220290906A1
Автор: Cai Haifeng, Liu Yuqian, Ma Xijiao, Zhu Chen
Принадлежит:

A load balancing method for two compressors. The two compressors are used in a refrigeration system and are driven coaxially by the same driving device. The method comprises the steps of obtaining parameters, determining balance, and controlling start/stop states. The parameters in the step of obtaining parameters are parameters related to the two compressors, such as a compressor suction side flow rate, or exhaust side flow rate, or suction side temperature; the step of determining balance comprises determining, on the basis of the obtained parameters related to the two compressors, whether load is balanced between the two compressors; the step of controlling start/top states comprises controlling the start/stop states of the two compressors according to whether the load is balanced. The method can monitor the load balance state of two compressors that are coaxially driven, thereby effectively avoiding failure of the refrigeration system caused by unbalanced loads of the compressors. 1101102101102101102103101102104. A load balancing method for two compressors , the two compressors being used in a refrigeration system , comprising a first compressor () and a second compressor () , wherein the first compressor () and the second compressor () are driven coaxially by the same driving device , suction sides of the first compressor () and the second compressor () are both connected with the same evaporator () via a pipeline , and exhaust sides of the first compressor () and the second compressor () are both connected with the same condenser () via a pipeline , characterized in that the method comprises:{'b': 101', '102, 'obtaining parameters, the parameters being related to the first compressor () and the second compressor ();'}{'b': 101', '102', '101', '102, 'determining balance, comprising determining whether a balance is achieved between the first compressor () and the second compressor () according to the obtained parameters related to the first compressor () and the ...

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Номер записи: 77
14-05-2020 дата публикации

CASCADE HEAT TRANSFER SYSTEM

Номер: US20200148038A1
Автор: BERGE Jeffrey B., Kolda Michal, Kujak Stephen A., Sauls John R., SCHULTZ KENNETH J., SRICHAI Panayu Robert, Sulc Vladimir
Принадлежит:

A transport refrigeration system (TRS) includes a first heat transfer circuit including a first compressor, a condenser, a first expansion device, and a cascade heat exchanger. The first compressor, the condenser, the first expansion device, and the cascade heat exchanger are in fluid communication such that a first heat transfer fluid can flow therethrough. The TRS includes a second heat transfer circuit including a second compressor, the cascade heat exchanger, a second expansion device, and an evaporator. The second compressor, the cascade heat exchanger, the second expansion device, and the evaporator are in fluid communication such that a second heat transfer fluid can flow therethrough. The first heat transfer circuit and the second heat transfer circuit are arranged in thermal communication at the cascade heat exchanger such that the first heat transfer fluid and the second heat transfer fluid are in a heat exchange relationship at the cascade heat exchanger. 1. A transport refrigeration system (TRS) , comprising: 'a first compressor, a condenser, a first expansion device, and a cascade heat exchanger, wherein the first compressor, the condenser, the first expansion device, and the cascade heat exchanger are in fluid communication such that a first heat transfer fluid can flow therethrough; and', 'a first heat transfer circuit, including 'a second compressor, the cascade heat exchanger, a second expansion device, and an evaporator, wherein the second compressor, the cascade heat exchanger, the second expansion device, and the evaporator are in fluid communication such that a second heat transfer fluid can flow therethrough;', 'a second heat transfer circuit, includingwherein the first heat transfer circuit and the second heat transfer circuit are arranged in thermal communication at the cascade heat exchanger such that the first heat transfer fluid and the second heat transfer fluid are in a heat exchange relationship at the cascade heat exchanger.2. The TRS ...

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Номер записи: 78
07-06-2018 дата публикации

HEATING INSTALLATION

Номер: US20180156474A1
Автор: GÖRANSSON Hans-Goran
Принадлежит:

A heating installation comprising: a first circuit (C); a second circuit (C); a first heat pump () for heating the medium in the first circuit; a heat exchanger () which is arranged in the second circuit and connected between a condenser () and an expansion valve () of the first heat pump; second and third heat pumps () arranged for heating a medium by absorbing heat energy from the medium in the second circuit; and an accumulator tank () arranged in the second circuit downstream of the second heat pump (). The accumulator tank is connected to an evaporator () of the third heat pump () in order to allow medium to circulate between the accumulator tank and this evaporator so that heat exchange between the medium in the second circuit and a working medium of the third heat pump is possible via the evaporator of the third heat pump. 1. A heating installation comprising:{'b': '1', 'a first circuit (C) containing a medium;'}{'b': '2', 'a second circuit (C) containing a medium;'}{'b': 4', '1, 'a first heat pump () arranged for heating the medium in the first circuit (C);'}{'b': 10', '2', '4', '4', '4', '4', '2, 'i': b', 'd, 'a heat exchanger () which is arranged in the second circuit (C) and which is connected between a condenser () and an expansion valve () of the first heat pump () to transfer heat from a working medium of the first heat pump () to the medium in the second circuit (C);'}{'b': 11', '2, 'a second heat pump () arranged for heating a medium by absorbing heat energy from the medium in the second circuit (C), wherein'}{'b': 11', '2', '2', '11', '11', '11, 'i': 'a', 'the second heat pump () has its input side connected to the second circuit (C) so that heat exchange between the medium in the second circuit (C) and a working medium of the second heat pump () is possible via an evaporator () of the second heat pump (); and'}{'b': 12', '2, 'claim-text': {'b': 12', '2', '11', '10', '10', '10, 'i': b', 'a, 'this accumulator tank () is arranged in the second circuit ...

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Номер записи: 79
22-09-2022 дата публикации

Grid interactive micro-distributed refrigerated display case

Номер: US20220299242A1
Автор: Eric Kozubal, Jason David WOODS, Ramin Teimouri FARAMARZI, Sammy HOUSSAINY
Принадлежит: Alliance for Sustainable Energy LLC

The present disclosure relates to an improved open vertical display case (OVDC) which utilizes radiant cooling to cool and/or maintain food products at a target temperature. The radiant cooling is performed using a plurality of piping routed through the walls and containing a first refrigerant stream. The plurality of piping may be cooled using a refrigeration circuit. In some embodiments, a phase change material may be used for thermal energy storage and positioned between the plurality of piping and the refrigeration circuit. In some embodiments, the refrigeration circuit may be connected to heating ventilation and air conditioning (HVAC) systems and water heating systems within the building.

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Номер записи: 80
23-05-2019 дата публикации

EXHAUST HEAT RECOVERY TYPE OF AIR-CONDITIONING APPARATUS

Номер: US20190154320A1
Автор: Takata Shigeo, Takenaka Naofumi, TANINAKA Shingo
Принадлежит: Mitsubishi Electric Corporation

An exhaust heat recovery type of air-conditioning apparatus includes: an air-conditioning-side refrigerant circuit including a first flow switching device, a second flow switching device, and an exhaust-heat recovery heat exchanger connected in parallel to an outdoor heat exchanger and an indoor heat exchanger; and a refrigeration-side refrigerant circuit. The first flow switching device causes the outdoor heat exchanger to communicate with one of a discharge side and a suction side of a first compressor through a pipe. The second flow switching device causes the indoor heat exchanger to communicate with one of the discharge and suction sides of the first compressor through a pipe. The exhaust-heat recovery heat exchanger is connected to the suction side of the first compressor through a pipe, and causes heat exchange between refrigerants. Because of the above configuration, the exhaust heat recovery type of air-conditioning apparatus can use exhaust heat in any of operation modes. 1. An exhaust heat recovery type of air-conditioning apparatus comprising:an air-conditioning-side refrigerant circuit in which a first compressor, a first flow switching device, an outdoor heat exchanger, a first expansion device, an indoor heat exchanger and a second flow switching device are connected by pipes, and an exhaust-heat recovery heat exchanger is connected in parallel to the outdoor heat exchanger and the indoor heat exchanger by pipes; anda refrigeration-side refrigerant circuit in which a second compressor, the exhaust-heat recovery heat exchanger, a refrigeration-side expansion device and a cooler are connected by pipes,wherein the first flow switching device is provided between the outdoor heat exchanger and the exhaust-heat recovery heat exchanger, and causes the outdoor heat exchanger to communicate with one of a discharge side and a suction side of the first compressor through an associated one of the pipes,the second flow switching device is provided between the ...

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Номер записи: 81
14-06-2018 дата публикации

Ultra-low temperature freezer

Номер: US20180163997A1
Автор: Takashi Arai, Yoshihiro Takahashi
Принадлежит: PHC Holdings Corp

An ultra-low temperature freezer includes: an insulated case defining a storage compartment having an opening in an upper face; an insulated door capable of opening and closing the opening; a first refrigeration unit configured such that a first compressor, a first condenser, and a first decompressor are mounted on a first mounting board; a second refrigeration unit configured such that a second compressor, a second condenser, and a second decompressor are mounted on a second mounting board; a machinery compartment provided near the insulated case, and configured to house the first and second refrigeration units to be independently drawable in the horizontal direction; and a control unit, where a control circuit is mounted, configured to be drawable independently of the first and second refrigeration units, the first and second refrigeration units and the control unit being housed in the machinery compartment to be stacked in a vertical direction.

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Номер записи: 82
15-06-2017 дата публикации

CASCADE REFRIGERATION SYSTEM

Номер: US20170167758A1
Автор: HSU Yu-Pin, SUN Chia-Pin, TSAI Ying-Chi
Принадлежит:

A cascade refrigeration system includes first and second cooling devices. The first cooling device includes a first compressor, a condenser, an expansion device, an evaporator having first and second passages independent from and not communicating with each other, and a first conduit interconnecting the first compressor, the condenser, the expansion device and the first passage. The second cooling device includes a second compressor, a heat exchanger, and a second conduit interconnecting the second compressor, the second passage and the heat exchanger. A circulation switching device includes a switching mechanism connected to the first conduit downstream of the condenser and upstream of the expansion device. 1. A cascade refrigeration system comprising:a first cooling device including a first compressor, a condenser disposed downstream of said first compressor, a first expansion device disposed downstream of said condenser, an evaporator disposed downstream of said first expansion device, and a first conduit that fluidly interconnects said first compressor, said condenser, said first expansion device and said evaporator and that is configured to circulate a first refrigerant, said evaporator having a first passage connected to said first conduit, and a second passage independent from and not communicating with said first passage;a second cooling device including a second compressor, a first heat exchanger disposed downstream of said second compressor, and a second conduit fluidly interconnecting said first heat exchanger, said second passage and said second compressor; anda circulation switching device including a first switching mechanism connected to said first conduit downstream of said condenser and upstream of said first expansion device, a first circulation pipeline fluidly interconnecting said first switching mechanism, said first heat exchanger and said first compressor, and a first circulation expansion device connected to said first circulation pipeline ...

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Номер записи: 83
15-06-2017 дата публикации

EVAPORATOR FOR A CASCADE REFRIGERATION SYSTEM

Номер: US20170167765A1
Автор: HSU Yu-Pin, SUN Chia-Pin, TSAI Ying-Chi
Принадлежит:

An evaporator includes a casing and a plurality of circulation units disposed on the casing. Each of the circulation units includes a flow path formed in the casing, an inlet formed in the casing for entry of one of refrigerants into the casing and fluidly communicating with the flow path, and an outlet formed in the casing spaced apart from the inlet for exit of the one of the refrigerants out the casing and fluidly communicating with the flow path. The circulation units are independent from each other and do not fluidly communicate with each other. 1. An evaporator for a cascade refrigeration system comprising:a casing; anda plurality of circulation units disposed on said casing, each of said circulation units including a flow path formed in said casing, an inlet formed in said casing for entry of one of refrigerants into said casing and fluidly communicating with said flow path, and an outlet formed in said casing spaced apart from said inlet for exit of the one of the refrigerants out said casing and fluidly communicating with said flow path;wherein said circulation units are independent from each other and do not fluidly communicate with each other.2. The multi-chamber evaporator as claimed in claim 1 , wherein said casing includes a base seat and a connection seat stacked on said base seat claim 1 , and said evaporator comprises two said circulation units respectively disposed on said base seat and said connection seat.3. The multi-chamber evaporator as claimed in claim 2 , wherein:said base seat includes a base wall, a first surrounding wall surrounding said base wall, and a first partition plate protruding inwardly from said first surrounding wall;said connection seat includes a connecting wall connected to said first surrounding wall opposite to said base wall, a second surrounding wall surrounding said connecting wall, a second partition plate protruding inwardly from said second surrounding wall, and a top wall connected to said second surrounding wall ...

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Номер записи: 84
21-05-2020 дата публикации

NONFLAMMABLE REFRIGERANTS HAVING LOW GWP, AND SYSTEMS FOR AND METHODS OF PROVIDING REFRIGERATION

Номер: US20200157398A1
Автор: Close Joshua, HULSE RYAN, POTTKER Gustavo, SETHI Ankit, Yana Motta Samel F.
Принадлежит:

The present invention provides a refrigerant composition comprising: (a) from about 65% by weight to about 90% by weight of HFO-1234ze(E); (b) from about 10% by weight to about 35% by weight of HFO-1336mzz (E); and optionally (c) from about 0% to about 4.4% by weight of HFC-227ea for use in a variety of refrigeration applications, including air conditioning and/or refrigeration and particularly cooling products such as fruits, vegetables and beverages without exposing those articles to temperatures below the freezing point of water. 1. A heat transfer system comprising:(a) an evaporator; and(b) and a refrigerant in the evaporator, said refrigerant comprising:(i) from about 65% by weight to about 90% by weight of HFO-1234ze(E); and(ii) from about 10% by weight to about 35% by weight of HFO-1336mzz (E).2. The heat transfer system of wherein said refrigerant consists essentially of said HFO-1234ze(E) and said HFO-1336mzz (E).3. The heat transfer system of wherein said refrigerant consists of said HFO-1234ze(E) and said HFO-1336mzz (E).4. The heat transfer system of wherein said refrigerant consists of from about 65% to about 78% by weight of HFO-1234ze(E) and from about 22% to about 35% by weight of said HFO-1336mzz (E).5. The heat transfer system of wherein said refrigerant further comprises from greater than 0 to about 4.4% by weight of HFC-227ea.6. The heat transfer system of wherein said refrigerant consists essentially of said HFO-1234ze(E) claim 5 , said HFO-1336mzz (E) and said HFC-227ea.7. The heat transfer system of wherein said refrigerant consists of from about 74.6 to about 78.6% by weight of HFO-1234ze(E) claim 1 , from about 17% to about 21% by weight of said HFO-1336mzz (E) and about 4.4% by weight of HFC-227ea.8. A refrigerant comprising:(a) from about 74.6 to about 78.6% by weight of HFO-1234ze(E); and(b) from about 17% to about 21% by weight of said HFO-1336mzz (E).9. The refrigerant of consisting essentially of: (a) about 78.6% by weight of HFO- ...

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Номер записи: 85
25-06-2015 дата публикации

BINARY REFRIGERATION APPARATUS

Номер: US20150176866A1
Автор: Ikeda Takashi, Ishikawa Tomotaka, Sugimoto Takeshi, Takayama Keisuke, Yamashita Tetsuya
Принадлежит:

A two-stage refrigeration apparatus includes a high-stage refrigeration cycle including a high-stage-side refrigerant circuit including a high-stage-side compressor, high-stage-side condenser, high-stage-side expansion valve, and high-stage-side evaporator connected by pipes, a low-stage refrigeration cycle including a low-stage-side refrigerant circuit including a low-stage-side compressor, low-stage-side condenser, low-stage-side receiver, low-stage-side expansion valve, and low-stage-side evaporator connected by pipes, a cascade condenser including the high-stage-side evaporator and low-stage-side condenser, a receiver heat exchanging portion configured to cool the low-stage-side receiver, and a high-stage refrigeration cycle controller configured to perform controlling so as to activate the high-stage-side compressor when estimating a low-stage-side refrigerant will reach a supercritical state while the low-stage-side compressor his defrosted on the basis of the pressure of the low-stage-side refrigerant. 1. A two-stage refrigeration apparatus comprising:a first refrigeration cycle device including a first refrigerant circuit in which a first compressor, a first condenser, a first expansion device, and a first evaporator are connected by pipes, the first refrigerant circuit circulating a first refrigerant;a second refrigeration cycle device including a second refrigerant circuit in which a second compressor, a second condenser, a receiver, a second expansion device, and a second evaporator are connected by pipes, the second refrigerant circuit circulating a second refrigerant;a cascade condenser including the first evaporator and the second condenser and configured to cause the first refrigerant flowing in the first evaporator and the second refrigerant flowing in the second condenser to exchange heat with each other;a receiver heat exchanging portion configured to cool the receiver by heat exchange with a portion in which the first refrigerant being low- ...

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Номер записи: 86
18-09-2014 дата публикации

REFRIGERATOR COOLING SYSTEM HAVING A SECONDARY COOLING LOOP

Номер: US20140260356A1
Автор: Wu Guolian
Принадлежит: WHIRLPOOL CORPORATION

A refrigerator cooling system and method provides cooling to one or more features of a refrigerator by employing a secondary cooling loop that utilizes the excess cooling capacity of an evaporator to selectively provide supplemental cooling to the features when a thermal demand arises. 1. A cooling system for use in a refrigerator , comprising:a first cooling loop having a compressor configured to compress coolant, a condenser operably connected to the compressor, a valving system operably connected to the condenser and configured to selectively provide coolant to a first evaporator thermally connected to a first refrigerator compartment and a second evaporator thermally connected to a second refrigerator compartment; anda secondary cooling loop in non-fluid contact with the first cooling loop and having a reservoir that is thermally connected to the first evaporator and stores a liquid thermal storage material that receives excess cooling capacity from the first evaporator, a heat exchanger thermally connected to a feature positioned within the first compartment, and a pump operably connected to the reservoir that pumps the liquid thermal storage material to the heat exchanger to provide cooling to the feature.2. The refrigerator cooling system of claim 1 , wherein the first compartment comprises a fresh food compartment of the refrigerator and the second compartment comprises a freezer compartment of the refrigerator.3. The refrigerator cooling system of claim 1 , further comprising a controller configured to control the flow of coolant through the first evaporator to thereby control the cooling provided to the liquid storage thermal material stored in the reservoir.4. The refrigerator cooling system of claim 3 , wherein the controller deters the compressor from providing coolant to the first evaporator when the liquid thermal storage material in the reservoir has received sufficient cooling capacity to be able to cool the feature at a predetermined rate.5. The ...

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Номер записи: 87
18-09-2014 дата публикации

REFRIGERATION SYSTEM WITH FREE-COOLING

Номер: US20140260391A1
Автор: Kopko William L.
Принадлежит: Johnson Controls Technology Company

A system for cooling air for use with a liquid cooling fluid loop. The system includes a first refrigerant circuit with an air-cooled condenser, a second refrigerant circuit with a liquid-cooled condenser, and a free-cooling loop. A control device is provided for controlling the operation of the system between a first mode, a second mode, and a third mode. When operating in the first mode, only the free-cooling loop cooperates directly with liquid cooling fluid in the liquid cooling fluid loop to cool the liquid cooling fluid, when operating in the second mode, the second refrigerant circuit is not engaged, and when operating in the third mode, the free-cooling loop interacts with the second refrigerant circuit to reject heat of the second refrigerant circuit through the free-cooling loop. 1. A system for cooling air for use with a liquid cooling fluid loop , the system comprising:a first refrigerant circuit with a first condenser;a second refrigerant circuit with a second condenser;a free-cooling loop;a control device for controlling the operation of the system between a first mode, a second mode, and a third mode;wherein when operating in the first mode, only the free-cooling loop cooperates directly with liquid cooling fluid in the liquid cooling fluid loop to cool the liquid cooling fluid, when operating in the second mode, the second refrigerant circuit is not engaged, and when operating in the third mode, the free-cooling loop interacts with the second refrigerant circuit to reject heat of the second refrigerant circuit through the free-cooling loop.2. The system as recited in claim 1 , wherein the first condenser comprises an air-cooled condenser and the free-cooling loop includes a coil located in an air stream upstream of the first condenser.3. The system as recited in claim 1 , wherein the free-cooling loop includes a valve that directs free-cooling liquid to the second condenser of the second refrigerant circuit when the system is operating in the third ...

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Номер записи: 88
23-06-2016 дата публикации

Carbon Dioxide Based Auxiliary Cooling System

Номер: US20160178244A1
Автор: Chaparro Ignacio Varela, DelVentura Robert, Pfister Steve
Принадлежит:

The present application provides a cascade refrigeration system. The cascade refrigeration system may include a first side cycle, a second side cycle with a second side cycle carbon dioxide refrigerant, and an auxiliary cooling system to cool the second side cycle carbon dioxide refrigerant in the event of a power outage. The auxiliary cooling system may include an auxiliary carbon dioxide refrigerant. 1. A cascade refrigeration system , comprising:a first side cycle;a second side cycle;the second side cycle comprising a second side cycle carbon dioxide refrigerant; andan auxiliary cooling system to cool the second side cycle carbon dioxide refrigerant in the event of a power outage;the auxiliary cooling system comprising an auxiliary carbon dioxide refrigerant.2. The cascade refrigeration system of claim 1 , wherein the auxiliary cooling system comprises an auxiliary compressor and an auxiliary expansion valve.3. The cascade refrigeration system of claim 1 , wherein the auxiliary cooling system comprises an auxiliary condenser.4. The cascade refrigeration system of claim 1 , wherein the auxiliary cooling system comprises an auxiliary gas cooler.5. The cascade refrigeration system of claim 1 , wherein the auxiliary cooling system comprises auxiliary condenser/evaporator.6. The cascade refrigeration system of claim 1 , wherein the second side cycle comprises a second side cycle receiver and wherein the auxiliary cooling system is in communication with the second side cycle receiver.7. The cascade refrigeration system of claim 1 , wherein the auxiliary cooling system comprises an auxiliary generator.8. The cascade refrigeration system of claim 1 , wherein the first side cycle and the second side cycle interface via a cascade evaporator/condenser.9. The cascade refrigeration system of claim 1 , wherein the first side cycle comprises a flow of an ammonia or a hydrocarbon refrigerant.10. The cascade refrigeration system of claim 1 , wherein the first side comprises a ...

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Номер записи: 89
23-06-2016 дата публикации

REFRIGERATOR

Номер: US20160178245A1
Автор: CHOI Hojin
Принадлежит:

A refrigerator includes a first compressor configured to compress a first refrigerant, a first condenser configured to return the first refrigerant to the first compressor during a freezing cycle, a second compressor configured to compress a second refrigerant, and a second condenser configured to return the second refrigerant to the second compressor during a refrigerating cycle. The refrigerator includes a controller configured to control a radiating fan for the first condenser and the second condenser based on an operation state of the first compressor and the second compressor, and a refrigerant loop channel configured to allow the first refrigerant passing through a refrigerant channel that is located between a body and a door of the refrigerator. The refrigerant channel is coupled to the first condenser, and, for a predetermined time interval, an average operation time of the freezing cycle is longer than an average operation time of the refrigerating cycle. 1. A refrigerator , comprising:a first compressor configured to compress a first refrigerant;a first condenser configured to return the first refrigerant to the first compressor during a freezing cycle;a second compressor configured to compress a second refrigerant;a second condenser configured to return the second refrigerant to the second compressor during a refrigerating cycle, wherein the refrigerating cycle is independent from the freezing cycle;a controller configured to control a radiating fan for the first condenser and the second condenser based on an operation state of the first compressor and the second compressor; anda hot refrigerant loop channel configured to allow the first refrigerant passing through a refrigerant channel that is located between a body and a door of the refrigerator,wherein the refrigerant channel is coupled to the first condenser, andwherein, for a predetermined time interval, an average operation time of the freezing cycle is longer than an average operation time of the ...

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Номер записи: 90
23-06-2016 дата публикации

Refrigeration apparatus

Номер: US20160178246A1
Автор: Jiro Yuzawa, Takashi Toyooka
Принадлежит: Panasonic Healthcare Holdings Co Ltd

A refrigeration apparatus includes: a refrigerant circuit constituted by a compressor, a condenser, a decompressor, and an evaporator connected in this order in a loop, wherein, as a refrigerant in the refrigerant circuit, a refrigerant composite material that contains a first refrigerant of an ultralow temperature range refrigerant having a boiling point of not less than −89.0° C. and not more than −78.1° C., carbon dioxide (R744), and a second refrigerant that is soluble in the carbon dioxide (R744) at a temperature lower than a boiling point of the carbon dioxide (R744) is used.

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Номер записи: 91
08-07-2021 дата публикации

COOLING SYSTEM WITH PARALLEL COMPRESSION USING MEDIUM TEMPERATURE COMPRESSORS

Номер: US20210207851A1
Автор: Cole Douglas
Принадлежит:

A cooling system is designed to operate in two different modes. Generally, in the first mode, when parallel compression is needed, certain valves are controlled to direct gaseous refrigerant from a tank to a compressor in the system and to direct refrigerant from low side heat exchangers towards other compressors. In this manner, a compressor in the system is transitioned to be generally a parallel compressor. In the second mode, when parallel compression is not needed, the valves are controlled to return the refrigerant flow back to normal. 1. A system comprising:a flash tank configured to store a refrigerant;a first low side heat exchanger configured to use refrigerant from the flash tank to cool a space proximate the first low side heat exchanger;a second low side heat exchanger configured to use refrigerant from the flash tank to cool a space proximate the second low side heat exchanger;a first compressor configured to compress refrigerant from the first low side heat exchanger;a second compressor configured to compress refrigerant from the first low side heat exchanger;a third compressor configured to compress refrigerant from the second low side heat exchanger and refrigerant from the first compressor;a fourth compressor;a first valve configured to control a flow of refrigerant from the flash tank to the fourth compressor; and during a first mode of operation, cause the first valve to open such that refrigerant from the flash tank flows, as a flash gas, through the first valve to the fourth compressor; and', 'during a second mode of operation, cause the first valve to close such that refrigerant from the second low side heat exchanger flows to the fourth compressor., 'a controller comprising a memory and a hardware processor, the processor configured to2. The system of claim 1 , the processor is further configured to:transition from the first mode of operation to the second mode of operation at least in response to a determination that a detected temperature ...

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Номер записи: 92
30-06-2016 дата публикации

SUBLIMATION DEFROST SYSTEM AND SUBLIMATION DEFROST METHOD FOR REFRIGERATION APPARATUS

Номер: US20160187041A1
Автор: FUKANO Shuji, FURUDATE Takahiro, KAMIMURA Takeshi, YOSHIKAWA Choiku
Принадлежит:

A sublimation defrost system for a refrigeration apparatus including: a cooling device in a freezer, and includes a casing containing a heat exchanger pipe; a refrigerating device for cooling and liquefying a COrefrigerant; and a refrigerant circuit connected to the heat exchanger pipe permitting the cooled and liquefied COrefrigerant to circulate. The defrost system includes: a dehumidifier device; a COcirculation path in the heat exchanger pipe, an on-off valve in the heat exchanger; a circulating unit for the COrefrigerant; a first heat exchanger part exchanging heat between a brine as a first heating medium and the circulating COrefrigerant; and a pressure adjusting unit for the circulating COrefrigerant during defrosting so that a condensing temperature of the COrefrigerant becomes equal to or lower than a freezing point of a water vapor in the freezer inner air without a drain receiving unit. 115-. (canceled)16. A sublimation defrost system for a refrigeration apparatus including: a cooling device which is disposed in a freezer , and includes a casing and a heat exchanger pipe disposed in the casing; a refrigerating device for cooling and liquefying a COrefrigerant; and a refrigerant circuit which is connected to the heat exchanger pipe and which is configured to permits the COrefrigerant cooled and liquefied in the refrigerating device to circulate to the heat exchanger pipe , the defrost system comprising:a dehumidifier device for dehumidifying freezer inner air in the freezer;{'sub': '2', 'a COcirculation path which is formed of a circulation path forming path connected to an inlet path and an outlet path of the heat exchanger pipe, and includes the heat exchanger pipe;'}{'sub': '2', 'an on-off valve disposed in each of the inlet path and the outlet path of the heat exchanger pipe and configured to be closed at a time of defrosting so that the COcirculation path becomes a closed circuit;'}{'sub': 2', '2, 'a circulating unit for COrefrigerant, the ...

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Номер записи: 93
28-06-2018 дата публикации

Variable Pressure Inventory Control of Closed Cycle System with a High Pressure Tank and an Intermediate Pressure Tank

Номер: US20180179917A1
Автор: Apte Raj, Larochelle Philippe
Принадлежит:

Systems and methods for variable pressure inventory control of a closed thermodynamic cycle power generation system or energy storage system, such as a reversible Brayton cycle system, with at least a high pressure tank and an intermediate pressure tank are disclosed. Operational parameters of the system such as working fluid pressure, turbine torque, turbine RPM, generator torque, generator RPM, and current, voltage, phase, frequency, and/or quantity of electrical power generated and/or distributed by the generator may be the basis for controlling a quantity of working fluid that circulates through a closed cycle fluid path of the system. 1. A method comprising:in a closed cycle system, circulating a working fluid through a closed cycle fluid path including, in sequence, a compressor, a hot side heat exchanger, a turbine, and a cold side heat exchanger, wherein the closed cycle fluid path comprises a high pressure leg and a low pressure leg;removing a first quantity of working fluid from the closed cycle fluid path by opening a first fluid connection between the high pressure leg and a high pressure tank, such that pressure of the working fluid in the high pressure leg decreases and pressure of the working fluid in the high pressure tank increases;closing the first fluid connection when pressure of the working fluid in the high pressure tank reaches a first threshold pressure value; andremoving a second quantity of working fluid from the closed cycle fluid path by opening a second fluid connection between the high pressure leg and an intermediate pressure tank, such that pressure of the working fluid in the high pressure leg decreases and pressure of the working fluid in the intermediate pressure tank increases.2. The method of claim 1 , wherein the closed cycle system comprises a closed Brayton cycle system.3. The method of claim 1 , wherein the first threshold pressure value is defined as an equilibrium pressure between pressure of the working fluid in the high ...

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Номер записи: 94
09-07-2015 дата публикации

Air Conditioning Device for a Compartment, in Particular for a Railroad Vehicle

Номер: US20150191182A1
Автор: Francis Mortreux, Josselin Chan, Philippe Chevalier, Rami Abou Eid
Принадлежит: Alstom Transport Technologies SAS

The air conditioning device ( 10 ) according to the invention comprises a primary heat pump circuit ( 12 ), comprising at least one primary heat exchanger ( 14 ) with the air from the compartment, a primary compressor ( 16 ), a second primary heat exchanger ( 18 ) with the outside air, and a primary expander device ( 20 ), and a heat storage reservoir ( 46 ), connected to the primary circuit ( 12 ), in parallel with said first primary heat exchanger ( 14 ) with the air from the compartment. The air conditioning device ( 10 ) comprises a secondary heat pump circuit ( 12′ ), comprising a first secondary heat exchanger ( 14′ ) with the air from the compartment, a secondary compressor ( 16′ ), a second secondary heat exchanger ( 18′ ) with the air from the outside, and a secondary expander device ( 20′ ). The heat storage reservoir ( 46 ) is connected to the secondary circuit ( 12′ ), in parallel with said first secondary heat exchanger ( 14′ ) with the air from the compartment.

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Номер записи: 95
28-06-2018 дата публикации

Systems and Methods for Multi-Stage Refrigeration

Номер: US20180180355A1
Автор: Ladd David
Принадлежит: Bechtel Hydrocarbon Technology Solutions, Inc.

Systems and methods for multi-stage refrigeration in mixed refrigerant and cascade refrigeration cycles using one or more liquid motive eductors in combination with a pump. 1. A multi-stage refrigeration system , comprising:an eductor in fluid communication with a first vapor line and a liquid source;a flashdrum in fluid communication with the eductor, the flashdrum connected to a second vapor line, a liquid line at a bottom of the flashdrum and a two-phase fluid line;a first expansion valve connected to only the liquid line and a chilled two-phase fluid line downstream from the flashdrum and the first expansion valve;another flashdrum in fluid communication with the chilled two-phase fluid line and connected to the first vapor line; anda pump positioned upstream of the eductor and in fluid communication with the liquid source.2. The system of claim 1 , further comprising another liquid line connected to the another flashdrum.3. The system of claim 2 , further comprising a second expansion valve in fluid communication with the another liquid line and connected to another chilled two-phase fluid line.4. The system of claim 1 , wherein a pressure at the liquid source is higher than a pressure in the first vapor line.5. The system of claim 3 , further comprising:an accumulator in fluid communication with the another chilled two-phase fluid line and connected to a third vapor line; andanother accumulator in fluid communication with the first vapor line, the second vapor line, the third vapor line and the eductor.6. The system of claim 1 , wherein the liquid source comprises ethylene.7. The system of claim 1 , wherein the liquid source comprises ethane.8. The system of claim 1 , wherein a pressure in the first vapor line is at least four times lower than a pressure in the second vapor line.9. The system of claim 5 , wherein the pressure at the liquid source is at least thirty-four times higher than the pressure in the first vapor line. This application is a continuation ...

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Номер записи: 96
07-07-2016 дата публикации

COMPOSITIONS COMPRISING 1,1-DIFLOUROETHENE (R-1132A)

Номер: US20160195321A1
Автор: Low Robert E., Sharratt Andrew P.
Принадлежит:

The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO, R-744). 1. A composition comprising:(i) 1,1-difluoroethene (R-1132a);(ii) a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally{'sub': '2', '(iii) carbon dioxide (CO, R-744).'}2. A composition according to claim 1 , selected from the group of compositions:comprising from about 10 to about 99% by weight of R-1132a and from about 1 to about 90% by weight of R-116;comprising from about 14 to about 99% by weight of R-1132a and from about 1 to about 86% by weight of R-116;comprising from about 35 to about 99% by weight of R-1132a and from about 1 to about 65% by weight of R-116; andcomprising up to about 30% by weight of R-1132a and at least about 70% by weight of R-116.3. (canceled)4. (canceled)5. A composition according to wherein the composition is azeotropic or near-azeotropic.6. A composition according to comprising from about 45 to about 60% by weight of R-1132a and from about 40 to about 55% by weight of R-116.7. (canceled)8. A composition according to further comprising CO.9. A composition according to claim 1 , selected from the group of compositions:{'sub': '2', 'comprising R-1132a, R-116 and up to about 70% by weight CO;'}{'sub': '2', 'comprising from about 2 to about 98% by weight of R-1132a, from about 2 to about 98% by weight of R-116 and from about 2 to about 60% by weight CO; and'}{'sub': '2', 'comprising from about 4 to about 96% by weight of R-1132a, from about 4 to about 96% by weight of R-116 and from about 4 to about 50% by weight CO.'}10. (canceled)11. (canceled)12. A composition according to wherein the COis present in an amount selected from the group consisting of from about 6 to about 40% by weight; andup to about 15% by weight.13. ( ...

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Номер записи: 97
16-07-2015 дата публикации

BINARY REFRIGERATION APPARATUS

Номер: US20150198357A1
Автор: Kobayashi Susumu, Satou Hiroyuki
Принадлежит:

An ultralow binary refrigeration apparatus, which cools an enclosed space to an ultralow temperature of −80° C. or lower to be used for storing cells or microorganisms, for example, without posing worries in regard of Ozone Depletion Potential (ODP) and Global Warming Potential (GWP), and which is excellent in refrigerant stability, can dispense with an oil separator, and enables a reduction in the amount of refrigerant, or a reduction in the power output of the compressor. The object is achieved by a binary refrigeration apparatus configured by connecting a high temperature refrigeration cycle and a low temperature refrigeration cycle via a cascade condenser, in which the high temperature refrigeration cycle is filled with propane as a refrigerant and a refrigerator oil, while the low temperature refrigeration cycle is filled with a hydrocarbon having a boiling point of −80° C. or lower as a refrigerant, a refrigerator oil, and an oil return agent. 1. A binary refrigeration apparatus comprising:a high temperature refrigeration cycle; anda low temperature refrigeration cycle including an evaporator; anda cascade condenser connecting the high temperature refrigeration cycle and the low temperature refrigeration cycle, wherein:the high temperature refrigeration cycle is filled with propane and a refrigerator oil,the low temperature refrigeration cycle is filled with a refrigerant including a hydrocarbon having a boiling point of −80° C. or lower, a refrigerator oil, and an oil return agent,an ultralow temperature of −80° C. or lower is produced by evaporating the hydrocarbon in the evaporator,the oil return agent is contained in an amount of from 0.1 to 14 mass % with respect to the refrigerant in the low temperature refrigeration cycle, andthe low temperature refrigeration cycle does not include an oil separator.2. The binary refrigeration apparatus according to claim 1 , wherein:the hydrocarbon having a boiling point of −80° C. or lower consists of ethane, andthe ...

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Номер записи: 98
06-07-2017 дата публикации

MULTI-STAGE LOW GWP AIR CONDITIONING SYSTEM

Номер: US20170191705A1
Автор: SETHI Ankit, VERA BECERRA ELIZABET del CARMEN, Yana Motta Samuel F.
Принадлежит:

Disclosed are refrigerant systems for conditioning air and/or items located within a dwelling occupied by humans or other animals preferably including at least a first heat transfer circuit containing a first heat transfer fluid in a vapor/compression circulation loop located substantially outside of the dwelling and at least a second heat transfer circuit, which contains a second heat transfer fluid different than the first heat transfer fluid, located substantially inside of the dwelling. In preferred embodiments, the second heat transfer circuit does not include a vapor compressor, but the system includes at least one intermediate heat exchanger which permits exchange of heat between the first heat transfer fluid and the second heat transfer fluid such that heat is transferred to the first heat transfer fluid, preferably thereby evaporating the first heat transfer fluid, and from the second heat transfer fluid, thereby condensing the second heat transfer fluid. Preferably, the intermediate heat exchanger is located outside the dwelling. The first heat transfer fluid comprises a refrigerant which has a GWP of not greater than about 500 and that the second heat transfer fluid comprises a refrigerant that also has a GWP of less than 500 and which has a low flammability and a low toxicity, and even more preferably a flammability that is substantially less than the flammability of the refrigerant in the first heat transfer fluid and/or a toxicity that is substantially less than the toxicity of the refrigerant in said first heat transfer fluid. 1. A refrigeration system for cooling the air of a human-occupied space or for cooling an item located in said human-occupied space using air in said human-occupied space , said system comprising: (i) a high temperature refrigerant having GWP of less than about 500 flowing through at least a portion of said high temperature circuit to reject heat from the system, wherein at least said portion of said high temperature circuit ...

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Номер записи: 99
20-06-2019 дата публикации

Apparatus and method for dual refrigerant tank refill

Номер: US20190186796A1
Автор: Craig F. Govekar, Massimo Corposanto, Paolo Pennacchia, Rahhali Sanhaji
Принадлежит: Snap On Inc

A dual tank refrigerant delivery apparatus including a refrigerant tank housing a first storage tank, a second storage tank, and a refrigerant delivery system positioned therein, the refrigerant delivery system adapted to supply a first refrigerant to the first storage tank and a second refrigerant to the second storage tank, a tank recess on the housing for receiving a refrigerant resupply tank, a first refrigerant hose for connecting to a first refrigerant resupply tank, a second refrigerant hose for connecting to a second refrigerant resupply tank, wherein the first refrigerant is supplied from the first refrigerant resupply tank through the first refrigerant hose and refrigerant delivery system to the first storage tank, and wherein the second refrigerant is supplied from the second refrigerant resupply tank through the second refrigerant hose and refrigerant delivery system to the second storage tank.

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Номер записи: 100