Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 2542. Отображено 100.
10-05-2000 дата публикации

КОМБИНИРОВАННАЯ ПАРОГАЗОВАЯ ЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА

Номер: RU0000013669U1
Автор: Буров В.Д., Конакотин Б.В., Макаревич В.В., Рыбаков Б.А., Цанев С.В.
Принадлежит: Буров Валерий Дмитриевич, Конакотин Борис Валерьевич, Макаревич Владимир Владиславович, Рыбаков Борис Адамович, Цанев Стефан Васильевич

1. Парогазовая установка, содержащая первый и второй вырабатывающие электроэнергию газотурбинные агрегаты, первый и второй утилизационные паровые котлы с экономайзерными, испарительными и пароперегревающими поверхностями нагрева, а также паросиловой контур, включающий вырабатывающий электроэнергию паротурбинный агрегат с системой регенерации и деаэратором, при этом первый и второй газотурбинные агрегаты посредством газоходов подсоединены соответственно к первому и второму утилизационным паровым котлам, отличающаяся тем, что она снабжена первым и вторым газоводяными теплообменниками, которые располагаются в газоходах соответственно первого и второго утилизационных паровых котлов и включены по ходу отработанных газов газотурбинного агрегата после экономайзерных поверхностей паровых котлов, причем указанные газоводяные теплообменники с запорно-регулирующей арматурой, включенные по нагреваемой среде параллельно, образуют замкнутый циркуляционный контур вместе с водоводяным теплообменником, включенным в тепловую сеть таким образом, что на вход нагреваемой среды посредством трубопроводов подается обратная сетевая вода, а выход по нагреваемой среде подключен ко входу сетевого подогревателя паротурбинной установки. 2. Установка по п.1, отличающаяся тем, что в системе регенерации паротурбинной установки отсутствует подогреватель высокого давления. (19) RU (11) 13 669 (13) U1 (51) МПК F01K 3/00 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 99125067/20, 03.12.1999 (24) Дата начала отсчета срока действия патента: 03.12.1999 (46) Опубликовано: 10.05.2000 1 3 6 6 9 R U (54) КОМБИНИРОВАННАЯ ПАРОГАЗОВАЯ ЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА (57) Формула полезной модели 1. Парогазовая установка, содержащая первый и второй вырабатывающие электроэнергию газотурбинные агрегаты, первый и второй утилизационные паровые котлы с экономайзерными, испарительными и пароперегревающими поверхностями нагрева, а также паросиловой ...

Подробнее
Номер записи: 1
27-10-2007 дата публикации

КОМБИНИРОВАННАЯ ТЕПЛОЭНЕРГЕТИЧЕСКАЯ СИСТЕМА

Номер: RU0000067644U1
Автор: Вареница Екатерина Викторовна, Колпаков Александр Викторович, Колпаков Виктор Иванович
Принадлежит: Вареница Екатерина Викторовна, Колпаков Александр Викторович, Колпаков Виктор Иванович

1. Комбинированная теплоэнергетическая система, содержащая тепловую газотурбинную, газопоршневую или парогазовую электростанцию с теплообменниками - утилизаторами теплоты охлаждающей воды и отходящих газов, которые включены в контур теплоснабжения потребителя теплоты с системами отопления и горячего водоснабжения, отличающаяся тем, что после теплообменника - утилизатора теплоты отходящих газов по линии отходящих газов последовательно включены газовая печь и технологические потребители горячего газа - сушильные, обжиговые и/или термические установки. 2. Комбинированная теплоэнергетическая система по п.1, отличающаяся тем, что в контур теплоснабжения дополнительно включен воздушный теплообменник для подогрева поступающего в газовую печь воздуха. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 67 644 (13) U1 (51) МПК F01K 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2007121978/22 , 15.06.2007 (24) Дата начала отсчета срока действия патента: 15.06.2007 (45) Опубликовано: 27.10.2007 (73) Патентообладатель(и): Колпаков Виктор Иванович (RU), Колпаков Александр Викторович (RU), Вареница Екатерина Викторовна (RU) U 1 6 7 6 4 4 R U Ñòðàíèöà: 1 U 1 Формула полезной модели 1. Комбинированная теплоэнергетическая система, содержащая тепловую газотурбинную, газопоршневую или парогазовую электростанцию с теплообменниками - утилизаторами теплоты охлаждающей воды и отходящих газов, которые включены в контур теплоснабжения потребителя теплоты с системами отопления и горячего водоснабжения, отличающаяся тем, что после теплообменника утилизатора теплоты отходящих газов по линии отходящих газов последовательно включены газовая печь и технологические потребители горячего газа - сушильные, обжиговые и/или термические установки. 2. Комбинированная теплоэнергетическая система по п.1, отличающаяся тем, что в контур теплоснабжения дополнительно включен воздушный теплообменник для подогрева ...

Подробнее
Номер записи: 2
27-10-2011 дата публикации

ТЕПЛОУТИЛИЗАЦИОННЫЙ КОМПЛЕКС С ПАРОВОЙ ТУРБИНОЙ

Номер: RU0000109797U1
Автор: Мильман Олег Ошеревич, Федоров Владимир Алексеевич
Принадлежит: Мильман Олег Ошеревич, Федоров Владимир Алексеевич

Теплоутилизационный комплекс с паровой турбиной, состоящий из источника горячих газов с выхлопным патрубком (трубопроводом) с теплообменником и парогенератором, сепараторами высокого и низкого давления, паровой турбины с электрогенератором, конденсатором пара, насосами, дросселями, отличающийся тем, что пар в паровую турбину от сепараторов высокого и низкого давления поступает через пароперегреватели, а греющая среда в виде пара (воды) высокого давления в пароперегреватель поступает по трубопроводу из парогенератора теплоутилизатора, а затем поступает в сепаратор, причем окончательное охлаждение уходящих газов в теплообменнике осуществляется конденсатом из конденсатора, который по трубопроводу поступает в парогенератор утилизатора. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F01K 3/20 (13) 109 797 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2011125716/06, 22.06.2011 (24) Дата начала отсчета срока действия патента: 22.06.2011 (72) Автор(ы): Федоров Владимир Алексеевич (RU), Мильман Олег Ошеревич (RU) (45) Опубликовано: 27.10.2011 Бюл. № 30 1 0 9 7 9 7 R U Формула полезной модели Теплоутилизационный комплекс с паровой турбиной, состоящий из источника горячих газов с выхлопным патрубком (трубопроводом) с теплообменником и парогенератором, сепараторами высокого и низкого давления, паровой турбины с электрогенератором, конденсатором пара, насосами, дросселями, отличающийся тем, что пар в паровую турбину от сепараторов высокого и низкого давления поступает через пароперегреватели, а греющая среда в виде пара (воды) высокого давления в пароперегреватель поступает по трубопроводу из парогенератора теплоутилизатора, а затем поступает в сепаратор, причем окончательное охлаждение уходящих газов в теплообменнике осуществляется конденсатом из конденсатора, который по трубопроводу поступает в парогенератор утилизатора. Стр.: 1 U 1 U 1 (54) ТЕПЛОУТИЛИЗАЦИОННЫЙ КОМПЛЕКС С ...

Подробнее
Номер записи: 3
20-03-2015 дата публикации

ПАРОГАЗОВАЯ УСТАНОВКА НА ПРОДУКТАХ ГАЗИФИКАЦИИ ВЛАЖНЫХ ТОПЛИВ

Номер: RU0000151124U1
Автор: Батенин Вячеслав Михайлович, Ковбасюк Валентин Игоревич
Принадлежит: Федеральное государственное бюджетное учреждение науки Объединенный институт высоких температур Российской академии наук (ОИВТ РАН)

1. Парогазовая установка на продуктах газификации влажных топлив, содержащая газотурбинный блок с инжекцией пара на входе в турбину, камеру сушки с устройством ввода в нее влажного топлива, побудитель циркуляции греющего перегретого пара под давлением в линии отбора пара в теплообменник подогрева пара для сушки, перегреватель пара, куда из линии подогрева пара на сушку в соответствии с поступающей из топлива влагой отбирается пар для турбины, газификатор со вводом осушенного материала из камеры сушки и выводом газа на турбину, отличающаяся тем, что линия пара влаги из камеры сушки после перегревателя подключена к инжектору пара газотурбинного блока, ввод окислителя в газификатор подключен к компрессору газотурбинного блока в параллель с линией воздуха на горение. 2. Парогазовая установка на продуктах газификации влажных топлив по п. 1, отличающаяся тем, что в линии пара на турбину за перегревателем установлен разделительный теплообменник, по нагреваемой стороне которого генерируется пар чистой воды для инжектора газотурбинного блока за счет охлаждения пара влаги на греющей его стороне, которая за конденсатором через дроссель идет на слив. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F01K 3/06 (13) 151 124 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014135511/28, 02.09.2014 (24) Дата начала отсчета срока действия патента: 02.09.2014 (72) Автор(ы): Батенин Вячеслав Михайлович (RU), Ковбасюк Валентин Игоревич (RU) (45) Опубликовано: 20.03.2015 Бюл. № 8 1 5 1 1 2 4 R U Формула полезной модели 1. Парогазовая установка на продуктах газификации влажных топлив, содержащая газотурбинный блок с инжекцией пара на входе в турбину, камеру сушки с устройством ввода в нее влажного топлива, побудитель циркуляции греющего перегретого пара под давлением в линии отбора пара в теплообменник подогрева пара для сушки, перегреватель пара, куда из линии подогрева пара на сушку в соответствии с поступающей из ...

Подробнее
Номер записи: 4
04-09-2018 дата публикации

ТЕПЛОУТИЛИЗАЦИОННАЯ УСТАНОВКА С ГЕРМЕТИЧНЫМ ЗАМКНУТЫМ КОНТУРОМ

Номер: RU0000182819U1
Автор: Мильман Олег Ошеревич, Перов Виктор Борисович, Шифрин Борис Аронович
Принадлежит: Закрытое акционерное общество Научно-производственное внедренческое предприятие "Турбокон"

Полезная модель относится к области энергосбережения, в частности к теплоутилизационным установкам замкнутого цикла. Теплоутилизационная установка с герметичным замкнутым контуром, отличающаяся тем, что электрогенератор охлаждается паром рабочего тела замкнутого контура, выходящего из турбины, с перепуском части пара через перфорированную перегородку, а его ротор, объединенный с ротором турбины, установлен на газодинамических опорах, работающих в среде этого пара. Такое решение упрощает конструкцию теплоутилизационной установки за счет обеспечения герметичности при исключении из ее состава специальных высокоэффективных уплотнительных устройств между вращающимся валом и корпусом и допускает контейнерное исполнение, которое в климатических районах с низкими температурами облегчает эксплуатацию установки и увеличивает ее срок службы. И 1 182819 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 182 819” 94 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 10.07.2021 Дата внесения записи в Государственный реестр: 15.07.2022 Дата публикации и номер бюллетеня: 15.07.2022 Бюл. №20 Стр.: 1 па 68С81 ЕП

Подробнее
Номер записи: 5
28-08-2019 дата публикации

ДВУХПОТОЧНЫЙ ТУРБОГЕНЕРАТОР ДЛЯ ОРГАНИЧЕСКОГО ЦИКЛА РЕНКИНА

Номер: RU0000191940U1
Автор: Мильман Олег Ошеревич, Перов Виктор Борисович, Шифрин Борис Аронович
Принадлежит: Закрытое акционерное общество Научно-производственное внедренческое предприятие "Турбокон"

Полезная модель относится к оборудованию, применяемому в энергетике, в частности в энергокомплексах на органическом цикле Ренкина. Двухпоточный турбогенератор предназначен для производства электроэнергии в процессе расширения пара органического рабочего тела, генерируемого за счет тепла различных источников. Двухпоточный турбогенератор позволяет расширить применение органического цикла Ренкина для генерации электроэнергии за счет увеличения надежности применяемого оборудования. Двухпоточный турбогенератор для органического цикла Ренкина, характеризующийся тем, что он включает корпус турбогенератора, выполненный как зеркально симметричная конструкция с плоскостью симметрии, перпендикулярной оси ротора, с двумя патрубками подвода острого пара рабочего тела, с одним круглым патрубком отвода мятого пара рабочего тела, диаметр которого лежит на указанной выше плоскости симметрии, патрубком отвода конденсата, расположенным в нижней точке корпуса, с неподвижно закрепленными в указанном корпусе с внутренней стороны статором электрического генератора, установленным в корпусе турбогенератора с образованием канала между обмоткой указанного статора и корпусом, гидростатическими опорными подшипниками, установленными зеркально симметрично относительно вышеуказанной плоскости симметрии, в которые от коллектора конденсата насосом смазки подается жидкое рабочее тело; ротор электрического генератора, опирающийся на указанные опорные подшипники, на свободных концах которого со стороны входов пара запрессованы зеркально симметричные диски турбин, ориентированные выхлопом в сторону патрубка отвода мятого пара рабочего тела; коллектор острого пара рабочего тела, присоединенный фланцевыми соединениями к двум патрубкам подвода острого пара рабочего тела на корпусе турбогенератора; приваренный к центру указанного коллектора патрубок, на котором с противоположной от коллектора стороны закреплен фланцевым соединением регулирующий клапан. Техническими результатами, обеспечиваемыми приведенной ...

Подробнее
Номер записи: 6
03-09-2019 дата публикации

ТУРБОГЕНЕРАТОР ДЛЯ ОРГАНИЧЕСКОГО ЦИКЛА РЕНКИНА

Номер: RU0000192073U1
Автор: Мильман Олег Ошеревич, Перов Виктор Борисович, Шифрин Борис Аронович
Принадлежит: Закрытое акционерное общество Научно-производственное внедренческое предприятие "Турбокон"

Полезная модель относится к оборудованию, применяемому в энергетике, в частности в энергокомплексах на органическом цикле Ренкина. Турбогенератор предназначен для производства электроэнергии в процессе расширения пара органического рабочего тела, генерируемого за счет тепла различных источников. Турбогенератор позволяет расширить применение органического цикла Ренкина для генерации электроэнергии за счет увеличения надежности применяемого оборудования. Турбогенератор для органического цикла Ренкина, характеризующийся тем, что он включает: корпус турбогенератора с приваренным патрубком подвода пара рабочего тела, с неподвижно закрепленными в указанном корпусе с внутренней стороны: статором электрического генератора, установленным в корпусе турбогенератора с образованием канала между обмоткой указанного статора и корпусом; форсунками впрыска жидкого рабочего тела в упомянутый выше канал, установленными радиально в плоскости, перпендикулярной оси ротора электрического генератора, и прикрепленными резьбовыми соединениями к трубопроводам, проходящим через корпус турбогенератора, при этом указанные трубопроводы приварены к трубопроводу подачи жидкого рабочего тела, на котором, в свою очередь, посредством фланцевого соединения закреплен регулирующий клапан; газодинамическими опорными подшипниками и упорной пятой газостатического подшипника, в которой выполнено центральное отверстие для подачи пара рабочего тела, поступающего по трубопроводу, проходящему через корпус турбогенератора; корпус конденсатора, со встроенным пучком теплообменных труб, охлаждаемых жидким теплоносителем, присоединенный по фланцам к корпусу турбогенератора, причем к корпусу конденсатора приварены патрубки отвода неконденсирующихся газов и жидкого рабочего тела; ротор электрического генератора, опирающийся на опорные газодинамические и упорный газостатический подшипники, на свободных концах которого со стороны входа пара запрессован диск осерадиальной турбины, ориентированной выхлопом в сторону ...

Подробнее
Номер записи: 7
31-05-2012 дата публикации

Heat engines with cascade cycles

Номер: US20120131918A1
Автор: Timothy James Held
Принадлежит: Echogen Power Systems LLC

Systems and methods for recovering energy from waste heat are provided. The system includes a waste heat exchanger coupled to a source of waste heat to heat a first flow of a working fluid. The system also includes a first expansion device that receives the first flow from the waste heat exchanger and expands it to rotate a shaft. The system further includes a first recuperator coupled to the first expansion device and to receive the first flow therefrom and to transfer heat from the first flow to a second flow of the working fluid. The system also includes a second expansion device that receives the second flow from the first recuperator, and a second recuperator fluidly coupled to the second expansion device to receive the second flow therefrom and transfer heat from the second flow to a combined flow of the first and second flows.

Подробнее
Номер записи: 8
28-06-2012 дата публикации

Method of and Apparatus for Selective Catalytic NOx Reduction in a Power Boiler

Номер: US20120160142A1
Автор: Alfred Edwards, David GREENHUT, John ELSTON, Michael MAZZOLLA
Принадлежит: Foster Wheeler North America Corp

A method of selective catalytic NO X reduction in a power boiler and a power boiler with selective catalytic NO X reduction. Fuel is combusted in a furnace of the boiler and a flue gas stream that includes NO X is generated. The flue gas stream is conducted from the furnace along a flue gas channel to a stack. The flue gas stream is cooled in a heat recovery area, including an economizer section, arranged in the flue gas channel. At least a portion of the NO X is reduced to N 2 in an NO X catalyst arranged in the flue gas channel downstream of the economizer section. The flue gas is further cooled, and heated air is generated in a gas-to-air heater arranged in the flue gas channel downstream of the economizer section and upstream of the NO X catalyst. The gas-to-air heater may be a tubular air heater or a heat exchanger with a recirculating heat transfer fluid.

Подробнее
Номер записи: 9
22-11-2012 дата публикации

Low temperature rankine cycle solar power system with low critical temperature hfc or hc working fluid

Номер: US20120291433A1
Автор: Ning Meng, Zhaolute Meng, Zhayate Meng
Принадлежит: Individual

This invention relates to a low temperature solar thermal power system, which combines the solar hot water collectors with the organic Rankine cycle system using the low critical temperature hydrofluorocarbons (HFC) or hydrocarbons (HC) working fluid for converting solar energy to electrical energy. This invention also relates to systems and methodology for conversion of low temperature thermal energy, wherever obtained, to electrical energy using the low critical temperature hydrofluorocarbons (HFC) or hydrocarbons (HC) working fluid for organic Rankine cycle system to drive an electrical generator or do other work in a cost effective way.

Подробнее
Номер записи: 10
02-05-2013 дата публикации

THERMAL ENERGY STORAGE AND RECOVERY WITH A HEAT EXCHANGER ARRANGEMENT HAVING AN EXTENDED THERMAL INTERACTION REGION

Номер: US20130104549A1
Автор: STIESDAL HENRIK
Принадлежит:

A thermal energy storage and recovery device includes a heat exchanger arrangement for guiding a flow of a heat transfer medium between first and second ends thereof, and a heat storage material surrounding it, forming thermal interaction region between the heat transfer medium and the heat storage material. The heat exchanger arrangement transports the heat transfer medium from the first end to the second end when the heat storage material receives thermal energy from the heat transfer medium, and transports the heat transfer medium from the second end to the first end when the heat storage material releases thermal energy to the heat transfer medium. A controller operates the device such that that when storing or recovering thermal energy to or from the heat transfer medium within the device there exists a region where the inlet and outlet temperature of the heat transfer medium of this region is kept constant. 117-. (canceled)18. A thermal energy storage and recovery device , comprising:a heat exchanger arrangement, which is configured for guiding a flow of a heat transfer medium between a first end of the heat exchanger arrangement and a second end of the heat exchanger arrangement,a heat storage material, which surrounds the heat exchanger arrangement in such a manner that a thermal interaction region is formed for thermally coupling the heat transfer medium with the heat storage material, anda control unit for controlling the operation of the thermal energy storage and recovery device, transport the heat transfer medium from the first end to the second end, if the thermal energy storage and recovery device is in a first operational mode, in which the heat storage material is supposed to receive thermal energy from the heat transfer medium, and', 'transport the heat transfer medium from the second end to the first end, if the thermal energy storage and recovery device is in a second operational mode, in which the heat storage material is supposed to release ...

Подробнее
Номер записи: 11
09-05-2013 дата публикации

Storage and recovery of thermal energy based on counter current principle of heat transfer medium transportation

Номер: US20130111903A1
Автор: Henrik Stiesdal
Принадлежит: SIEMENS AG

A thermal energy storage device is provided. The device has a heat exchanger arrangement for guiding a flow of a heat transfer medium between a first end and a second end of the heat exchanger arrangement, and a heat storage material surrounding the heat exchanger arrangement. The heat exchanger arrangement transports the heat transfer medium from the first end to the second end if the thermal energy storage device is in a first operational mode, in which the heat storage material is supposed to receive thermal energy from the heat transfer medium, and transports the heat transfer medium from the second end to the first end if the thermal energy storage device is in a second operational mode, in which the heat storage material is supposed to release thermal energy to the heat transfer medium.

Подробнее
Номер записи: 12
09-05-2013 дата публикации

THERMAL ENERGY STORAGE AND RECOVERY DEVICE AND SYSTEM HAVING A HEAT EXCHANGER ARRANGEMENT USING A COMPRESSED GAS

Номер: US20130111904A1
Автор: STIESDAL HENRIK
Принадлежит:

A thermal energy storage and recovery device is disclosed which includes a heat exchanger arrangement configured for guiding a flow of a heat transfer medium between a first end and a second end, and a heat storage material surrounding the heat exchanger arrangement so that a thermal interaction region is formed for thermally coupling the heat transfer medium with the heat storage material. The heat exchanger arrangement is sealed against the heat storage material so that, when in a first operational mode, in which the heat storage material is supposed to receive thermal energy from the heat transfer medium, a compressed gas is usable as the heat transfer medium for transferring thermal energy from the heat transfer medium to the heat storage material. 1. A thermal energy storage and recovery device comprising:a heat exchanger arrangement, which is configured for guiding a flow of a heat transfer medium between a first end of the heat exchanger arrangement and a second end of the heat exchanger arrangement, anda heat storage material, which surrounds the heat exchanger arrangement in such a manner that a thermal interaction region is formed for thermally coupling the heat transfer medium with the heat storage material,wherein the heat exchanger arrangement is sealed against the heat storage material in such a manner that, when the thermal energy storage and recovery device is in a first operational mode, in which the heat storage material is to receive thermal energy from the heat transfer medium, compressed gas, which has been heated up by a gas compression, is usable as the heat transfer medium for transferring thermal energy from the heat transfer medium to the heat storage material.2. The thermal energy storage and recovery device as set forth in claim 1 , (a) transport the heat transfer medium from the first end to the second end, when the thermal energy storage and recovery device is in the first operational mode, and', '(b) transport the heat transfer medium ...

Подробнее
Номер записи: 13
16-05-2013 дата публикации

THERMAL ENERGY STORAGE SYSTEM

Номер: US20130118170A1
Автор: BISSET Stephen James, MIERISCH Robert Charles
Принадлежит: TERRAJOULE CORPORATION

A variety of energy storage and retrieval systems are described. Generally “hot” and “cold thermal reservoirs are provided. The “hot” reservoir holds both liquid and saturated vapor phase working fluid. The “cold” reservoir holds working fluid at a lower temperature than the hot reservoir. A heat engine/heat pump unit: (a) extracts energy from vapor passing from the hot reservoir to the cold reservoir via expansion of the vapor in a manner that generates mechanical energy to facilitate retrieval of energy; and (b) compresses vapor passing from the cold reservoir to the hot reservoir to facilitate the storage of energy. In some embodiments, the heat engine/heat pump takes the form of a reversible positive displacement heat engine that can act as both an expander and a compressor. To facilitate the storage and retrieval of electrical energy, an electric motor/generator unit may be mechanically coupled to the heat engine/heat pump unit. 1. An energy storage and retrieval system comprising:a first thermal reservoir arranged to hold water and saturated steam in a first state;a second thermal reservoir arranged to hold water and steam in a second state having a lower temperature than the first state; and (a) extract energy from steam passing from the first thermal reservoir to the second thermal reservoir via expansion of the steam in a manner that generates mechanical energy to facilitate retrieval of energy from the energy storage and retrieval system, and', '(b) compress steam passing from the second thermal reservoir to the first thermal reservoir to facilitate the storage of energy in the energy storage and retrieval system,, 'a reversible positive displacement steam engine arranged to,'}whereby water and steam serve as a working fluid for the energy storage and retrieval system.2. An energy storage and retrieval system as recited in further comprising an electric motor/generator mechanically coupled to the steam engine claim 1 , the electric motor/generator being ...

Подробнее
Номер записи: 14
13-06-2013 дата публикации

Combined Cycle Solar Power Generation

Номер: US20130147197A1
Автор: Al Ali Yousif, Goebel Olaf
Принадлежит: Abu Dhabi Future Energy Company

Combined cycle solar power generation is achieved using a primary cycle based on a solar receiver, such as a volumetric absorber, in which compressed air is heated by concentrated solar radiation, coupled with a secondary cycle based on a water/steam circuit driven by exhaust gas from the primary cycle. When the primary cycle is inactive, typically at night time, the secondary cycle can be driven by accessing a heat store of liquid or solid heat storage material, such as a molten salt or concrete blocks, which has been heated earlier during day time operation. The water/steam circuit is reconfigurable between first and second switching conditions, wherein in the first switching condition heat is transferred directly or indirectly from the primary cycle to heat the heat storage material, and in the second switching condition stored heat is transferred from the heat storage material to the water/steam circuit in order to generate steam. 2. The power plant of claim 1 , further comprising a heliostat arranged to concentrate solar radiation onto the solar receiver.3. The power plant of claim 1 , further comprising an auxiliary fossil fuel burner arranged in the primary cycle to heat and compress the gas as an alternative to the solar receiver claim 1 , thereby providing a hybrid primary cycle.4. The power plant of claim 1 , wherein the solar receiver comprises a volumetric absorber arranged to receive the concentrated solar radiation and in thermal communication with the gas passageway.5. The power plant of claim 1 , wherein the heat storage material comprises one or more solid blocks arranged in thermal communication with the heat storage circuit.6. The power plant of claim 1 , wherein the heat storage material comprises a liquid contained in the heat storage circuit.7. The power plant of claim 5 , wherein the heat storage circuit comprises a heat exchanger which in the first switching condition provides thermal contact between the heat storage material and steam in the ...

Подробнее
Номер записи: 15
04-07-2013 дата публикации

METHOD, HEAT ACCUMULATOR AND HEAT ACCUMULATOR SYSTEM FOR HEATING AND COOLING A WORKING FLUID

Номер: US20130167534A1
Автор: Opel Oliver, Ruck Wolfgang
Принадлежит: LEUPHANA UNIVERSITAT LUNEBURG

The invention relates to a method for heating and cooling a working fluid () using at least one thermochemical heat accumulator medium (), wherein the working fluid () is guided through at least one thermochemical heat accumulator () comprising the heat accumulator medium (), wherein the working fluid () is guided without contact to the heat accumulator medium (), wherein upon charging of the heat accumulator medium () a heat flow (Q) is transferred from the working fluid () to the heat accumulator medium () and at least one substance () is released from the heat accumulator medium () and discharged from the heat accumulator (), and wherein upon discharging of the heat accumulator medium () the substance () is fed with release of heat to the heat accumulator medium () or at least to a reaction product of the heat accumulator medium () that was produced during charging of the heat accumulator medium (), and a heat flow (Q) is transferred to the working fluid (). 1. A method for heating and cooling a working fluid using at least one thermochemical heat accumulator medium , wherein the working fluid is guided through at least one thermochemical heat accumulator comprising heat accumulator medium , the working fluid being guided without contact to heat accumulator medium , wherein upon charging of heat accumulator medium a heat flow is transferred from working fluid to heat accumulator medium and at least one substance is released from heat accumulator medium and conveyed away from heat accumulator , and wherein upon discharging of heat accumulator medium substance is fed , releasing heat , to heat accumulator medium or at least to a reaction product of heat accumulator medium that was produced during charging of heat accumulator medium , and a heat flow is transferred to working fluid.2. The method according to claim 1 , characterized in that substance discharged from heat accumulator during the charging of heat accumulator medium is accumulated and recycled to heat ...

Подробнее
Номер записи: 16
12-09-2013 дата публикации

Advanced adiabatic compressed air energy storage system

Номер: US20130232974A1
Автор: Michael Nakhamkin
Принадлежит: Synchrony Inc

A compressed air energy storage (CAES) system is disclosed for the generation of power. The system may include a compressor configured to receive inlet air and output compressed air to an air storage during an off-peak period. During a peak load period, compressed air from the air storage may be released to generate power. A heat exchanger fluidly coupled to the air storage may receive the released compressed air and transfer heat to the compressed air. An air expander may receive the heated compressed air from the heat exchanger, expand the heated compressed air to generate a first power output, and output an exhaust. The system may further include a bypass line configured to circumvent compressed air around the air expander. A second power output may be generated through a turbine configured to receive the compressed air from the air storage and the exhaust from the air expander.

Подробнее
Номер записи: 17
14-11-2013 дата публикации

STEAM POWER PLANT WITH HEAT RESERVOIR AND METHOD FOR OPERATING A STEAM POWER PLANT

Номер: US20130298558A1
Автор: BOND Benjamin, HEINTZ Julia, KITZMANN Ewald, SCHULE Volker
Принадлежит:

A steam power plant is suggested having, parallel to the low-pressure passage (VW to VW), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the low-pressure preheater passage (VW to VW) into the condensate line () resp. the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy. 1. Steam power plant comprising a steam generator , a turbine , a condenser , a condensate line , at least one low-pressure preheater and a heat reservoir , wherein the condensate line connects the condenser , the at least one preheater and a feed water container with each other , wherein the heat reservoir is arranged parallel to the at least one low-pressure preheater and wherein the heat reservoir is a displacement heat reservoir filled with feed water , wherein the heat exchanger uses steam with a saturated steam temperature higher than the operational temperature of the feed water container.2. Steam power plant according to claim 1 , wherein the heat exchanger uses steam from the turbine claim 1 , steam from the steam generator or auxiliary steam for heating the feed water.3. Steam power plant according to claim 1 , further comprising a “cold” connection of the heat reservoir connected with a first section of the condensate line upstream of the at least one low-pressure preheater.4. Steam power plant according to claim 3 , wherein the “cold” connection of the heat reservoir is connected with a second section of the condensate line downstream of the at least one low-pressure preheater.5. Steam power plant according to claim 1 , further ...

Подробнее
Номер записи: 18
14-11-2013 дата публикации

STEAM POWER PLANT WITH HIGH-TEMPERATURE HEAT RESERVOIR

Номер: US20130298559A1
Автор: EWERT Angie, HEINTZ Julia, KITZMANN Ewald, SCHULE Volker
Принадлежит:

A steam power plant is suggested having, parallel to the high-pressure preheater passage (VW to VW), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the high-pressure preheater passage (VW to VW) into the condensate line () resp. the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy. 1135819451954568451. Steam power plant comprising a steam generator () , a turbine () , a condenser () , a feed water container () , a condensate line () , at least one high-pressure preheater (VW , VW) and a heat reservoir (A) , wherein the condensate line () connects the condenser () , the at least one high-pressure preheater (VW , VW , VW) and the feed water container () with each other , characterized in that the heat reservoir (A) is arranged parallel to the at least one high-pressure preheater (VW , VW) and in that the heat reservoir (A) is loaded with steam from the steam generator ().2192121121. Steam power plant according to claim 1 , characterized in that the heat reservoir (A) is connected to the condensate line () with a connecting line () and that in a first section (.) of the connecting line () a first heat exchanger (B) is provided.3108. Steam power plant according to claim 1 , characterized in that the heat reservoir (A) is connected to the heat first exchanger (B) and to a second heat exchanger () by means of a thermal energy carrier (thermo oil).4234141517. Steam power plant according to claim 3 , characterized in that the thermal energy carrier circuit comprise a recirculation pump (C-) for thermal oil and ...

Подробнее
Номер записи: 19
21-11-2013 дата публикации

High-temperature steam turbine power plant with double reheat

Номер: US20130305719A1
Автор: Martin Reigl
Принадлежит: Alstom Technology AG

A steam power plant is described including on a single rotor at least one high pressure turbine or turbine section having a steam exit connected in operation to a first steam reheater and at least two intermediate pressure turbines or turbine sections with a first of the at least two intermediate pressure turbines or turbine sections having a steam exit connected in operation to a second steam reheater and with a second of the at least two intermediate pressure turbines or turbine sections having a steam entry to receive steam from the second steam reheater and a steam exit connected to one or more low pressure turbines or turbine sections, whereby the at least two intermediate pressure turbines or turbine sections are each separated into a high temperature turbine or turbine section and into a low temperature turbine or turbine section.

Подробнее
Номер записи: 20
26-12-2013 дата публикации

LIQUID METAL THERMAL STORAGE SYSTEM AND METHOD

Номер: US20130340432A1
Автор: Carrington K. Russell, Hunt Arlon J.
Принадлежит:

Embodiments of the invention relate to systems and methods for storing thermal energy from working fluid heated by a high-temperature heat source and retrieving the thermal energy. The heated working fluid is in thermal communication with heat exchanger elements that can efficiently store thermal energy by, for example, phase change in one or more metal alloys. 1. A system for storing and retrieving thermal energy from a fluid heated by a high temperature source comprising:a chamber containing heat exchanger elements, wherein the heated fluid is passed through the chamber containing the heat exchanger elements, which heat exchanger elements are in thermal communication with one or more metal alloys that melt at a specific temperature between about 577° C. and 1414° C. to store thermal energy; andwherein a fluid to be heated is passed through said chamber where the one or more metal alloys give up the thermal energy stored.2. A system for storing and retrieving thermal energy from a fluid heated by a high temperature source comprising:a first chamber containing one or more metal alloys that melt at a specific temperature between about 577° C. and 1414° C. to store thermal energy;a second chamber that is adapted to accept a fluid that is heated by the high temperature source, said second chamber in thermal communication with the first chamber; anda third chamber this is adapted to accept a fluid that is to be heated by the first chamber, said third chamber in thermal communication with the first chamber.3. A method using the system of .4. A power generation plant that uses the system of as a source of energy.5. A power generation plant that uses the system of as an alternative source of energy when a primary source of energy is unavailable.6. The system of wherein said heat exchanger elements have a plurality of compartments with each compartment having one or more metal alloys that melt at a different specific temperature.7. The system of wherein said first chamber ...

Подробнее
Номер записи: 21
02-01-2014 дата публикации

METHOD FOR QUICKLY CONNECTING A STEAM GENERATOR

Номер: US20140000259A1
Автор: Hermsdorf Christian, Migl Matthias, Peters Georg, Schmid Erich, Schöttler Michael
Принадлежит:

A method is provided for connecting at least one further steam generator to a first steam generator in a power plant. The power plant includes at least two steam generators and a steam turbine, in which a fluid used to drive the steam turbine is conveyed in a fluid circuit having a plurality of steam systems. The steam systems are assigned individual steam generators and are able to be separated from one another by shut-off valves. The fluid of at least the first steam generator is connected to the steam turbine. The method involves opening the shut-off valve of at least one first steam system of the at least one further steam generator before the steam of the at least one further steam generator has reached approximately the same steam parameters as the steam of the first steam generator, so that steam can flow into the further steam generator. 114-. (canceled)15. A method for connecting at least one further steam generator to a first steam generator in a power plant , the power plant comprising at least said two steam generators and a steam turbine , in which a fluid used to drive the steam turbine is conveyed in a fluid circuit comprising a plurality of steam systems , wherein the steam systems are assigned individual steam generators and are able to be separated from one another by shut-off valves and in which the fluid of at least the first steam generator is connected to the steam turbine , the method comprising:opening the shut-off valve of at least one first steam system of the at least one further steam generator before the steam of the at least one further steam generator has reached approximately the same steam parameters as the steam of the first steam generator, so that steam can flow into the further steam generator.16. The method as claimed in claim 15 , comprising opening the shut-off valve of the at least one first steam system in a cold intermediate superheating line.17. The method as claimed in claim 15 , further comprising:further increasing the ...

Подробнее
Номер записи: 22
16-01-2014 дата публикации

METHOD FOR OPERATING A ONCE-THROUGH STEAM GENERATOR AND STEAM GENERATOR DESIGNED FOR CARRYING OUT THE METHOD

Номер: US20140014189A1
Автор: Brodesser Joachim, Effert Martin
Принадлежит:

A method for operating a once-through steam generator including an evaporator, in which a feeding mass flow of a flow medium is supplied using a feed pump to the evaporator and at least partially evaporated there, wherein flow medium that has not evaporated is separated in a separator arranged downstream of the evaporator and a circulating mass flow of the separated flow medium is returned using a circulating pump to the evaporator, and the mass flow referred to as the evaporator mass flow of the flow medium flowing through the evaporator is additively composed of the feeding mass flow and the circulating mass flow. In a low-load interval, the feeding mass flow is increased with increasing load while the circulating mass flow is kept substantially constant, in a moderate load interval the feeding mass flow is further increased with increasing load and the circulating mass flow is reduced to zero. 113-. (canceled)14. A method for operating a once-through steam generator with an evaporator , comprising:feeding a feeding mass flow of a flow medium using a feed pump to the evaporator and at least partly evaporated there in the evaporator,separating non-evaporated flow medium in a separator connected downstream from the evaporator and is fed back to a circulating mass flow of the separated flow medium using a circulating pump into the evaporator, so that the mass flow referred to as the evaporator mass flow of the flow medium flowing through the evaporator is composed additively of the feeding mass flow and the circulating mass flow,wherein in a low-load interval the feeding mass flow is increased as a load rises, while the circulating mass flow is kept substantially constant,wherein in a moderate-load interval the feeding mass flow is increased further with increasing load and the circulating mass flow is reduced to zero, andwherein when necessary in a high load interval the feeding mass flow is increased further with increasing load and the circulating mass flow is ...

Подробнее
Номер записи: 23
23-01-2014 дата публикации

Solar Heat Steam Cycle System

Номер: US20140020383A1
Автор: Nagafuchi Naoyuki, Ono Hideki, Yoshida Takuya
Принадлежит: HITACHI ,LTD.

An object of the present invention is to provide a solar heat steam cycle system capable of operating efficiently and stably in keeping with the status of collected or stored heat, and a control method for use with the system. 1. A solar heat steam cycle system comprising:a heat collector which collects solar thermal energy;a thermal storage device which stores the solar thermal energy collected by the heat collector;a feed water heater which heats feed water;an evaporator which evaporates the feed water supplied from the feed water heater; anda steam turbine driven by steam generated by the evaporator,wherein the system comprises a control valve which controls the allocations of heating medium supplied from said thermal storage device, to said evaporator and said feed water heater.2. The solar heat steam cycle system according to claim 1 , further comprising:stored heat amount acquiring means which acquires stored heat amount information about temperature or gross heating value of heat stored in said thermal storage device; anda control device which receives as input stored heat amount information acquired by the stored heat amount acquiring means to determine opening of said control valve in such a manner that the allocation of the heating medium supplied to said evaporator is relatively increased when the stored heat amount is larger than a predetermined criterion and that the allocation of the heating medium supplied to said feed water heater is relatively increased when said stored heat amount is smaller than the predetermined criterion.3. The solar heat steam cycle system according to claim 1 , further comprising:stored heat amount acquiring means which acquires stored heat amount information about temperature or gross heating value of heat stored in said thermal storage device; anda control device which receives as input stored heat amount information acquired by the stored heat amount acquiring means to determine opening of said control valve in such a ...

Подробнее
Номер записи: 24
23-01-2014 дата публикации

Power generating system

Номер: US20140020387A1
Автор: Akihiro Taniguchi, Katsuya Yamashita, Kazuo Takahata, Mikhail Rodionov, Mikio TAKAYAMAGI, Mohammad Ashari HADIANTO, Nobuo Okita, Osamu Furuya
Принадлежит: Toshiba Corp

In one embodiment, a power generating system includes; a flow dividing unit configured to divide a first heat medium supplied thereto to a first flow path and a second flow path; and a heat accumulating unit configured to accumulate the first heat medium sent thereto via the second flow path and deliver the first heat medium at a temporally leveled flow rate. The system further includes: a heat exchanging unit configured to transfer heat from the first heat medium sent thereto via the first flow path and the first heat medium delivered thereto from the heat accumulating unit, to a second heat medium that is lower in boiling point than the first heat medium; and a turbine configured to rotationally move with the second heat medium to which heat has been transferred by the heat exchanging unit.

Подробнее
Номер записи: 25
13-02-2014 дата публикации

THERMAL-ENERGY-STORAGE TANK WITH INTEGRATED STEAM GENERATOR

Номер: US20140041600A1
Автор: Alemberti Alessandro, Aliotta Salvatore, Barbensi Andrea, Fabrizi Fabrizio, Gaggioli Walter, Rinaldi Luca, Tarquini Pietro
Принадлежит:

A thermal-energy storage tank () comprising a containing structure () designed to house a store of thermovector fluid in the liquid state, a regenerating circuit () designed to draw the thermovector fluid from a bottom of the containing structure () and, once heated outside the tank, to deposit it in a surface portion of the store of thermovector fluid, at least one steam generator () comprising a heat exchanger () with vertical extension housed within the containing structure () and having at least one top opening () designed for inlet of the thermovector fluid and a bottom opening designed for outlet of the thermovector fluid (). 1. A thermal-energy storage tank comprising a containing structure designed to house a store of thermovector fluid in the liquid state and spontaneously stratified in temperature , a regenerating circuit designed to draw said thermovector fluid from a bottom of said containing structure for taking it out of said containing structure and , once heated by means of heating means that are lodged outside said containing structure , to deposit it in a surface portion of said store of thermovector fluid , at least one steam generator comprising a heat exchanger with vertical extension that is housed within said containing structure and immersed in said thermovector fluid; said heat exchanger having at least one top opening designed for inlet of said thermovector fluid coming from said store and a bottom opening designed for outlet of said thermovector fluid for its reintroduction in said store.2. (canceled)3. The thermal-energy storage tank according to claim 1 , characterized in that said heat exchanger is a tube-nest heat exchanger and shell.4. The thermal-energy storage tank according to claim 3 , characterized in that said steam generator comprises a cylindrical shell and a tube nest with helical conformation and housed entirely within said shell.5. The thermal-energy storage tank according to claim 4 , characterized in that said steam ...

Подробнее
Номер записи: 26
06-03-2014 дата публикации

THERMOELECTRIC ENERGY STORAGE SYSTEM

Номер: US20140060051A1
Автор: Hemrle Jaroslav, MERCANGOEZ Mehmet, Ohler Christian
Принадлежит: ABB RESEARCH LTD

A thermoelectric energy storage system and method are provided for storing electrical energy by transferring thermal energy to a thermal storage in a charging cycle, and for generating electricity by retrieving the thermal energy from the thermal storage in a discharging cycle. The thermoelectric energy storage includes a working fluid circuit configured to circulate a working fluid through a heat exchanger, and a thermal storage conduit configured to transfer a thermal storage medium from a thermal storage tank through the heat exchanger. The working fluid includes a zeotropic mixture. The working fluid is in a mixed vapor and liquid phase and has continuously rising or continuously falling temperature during heat transfer due to the working fluid including the zeotropic mixture. 1. A thermoelectric energy storage system for storing electrical energy by transferring thermal energy to a thermal storage in a charging cycle , and for generating electricity by retrieving the thermal energy from the thermal storage in a discharging cycle , the thermoelectric energy storage system comprising:a working fluid circuit configured to circulate a working fluid through a heat exchanger; anda thermal storage conduit configured to transfer a thermal storage medium from a thermal storage tank through the heat exchanger,wherein the working fluid includes a zeotropic mixture.2. The thermoelectric energy storage system of claim 1 , wherein the zeotropic mixture is selected such that the temperature of the working fluid in the heat exchanger changes from a first temperature to a second temperature.3. The thermoelectric energy storage system of claim 1 , wherein the heat exchanger includes a counter flow heat exchanger.4. The thermoelectric energy storage system of claim 1 , wherein the flow of the working fluid through the heat exchanger is controlled such that a temperature difference between the working fluid and the thermal storage medium is less than 50° C.5. The thermoelectric ...

Подробнее
Номер записи: 27
20-03-2014 дата публикации

SYSTEM COMBINING POWER GENERATION APPARATUS AND DESALINATION APPARATUS

Номер: US20140075945A1
Автор: MATSUMURA Masayoshi
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

In a system combining a power generation apparatus and a desalination apparatus, the power generation apparatus includes a circulation circuit in which a first heat exchanger, an expander, a second heat exchanger having a space, the second heat exchanger for evaporating seawater and generating water vapor, and a working medium pump are connected in series, and a power generator, and the desalination apparatus includes a suction pump for suctioning a gas in the space, a control device for driving the suction pump in such a manner that an atmospheric pressure in the space becomes a saturated water vapor pressure, a condenser for condensing the water vapor led from the space, and a sweet water storage tank for storing sweet water (W) condensed in the condenser. 1. A system combining a power generation apparatus and a desalination apparatus ,said power generation apparatus comprising:a circulation circuit in which a first heat exchanger for evaporating a working medium by exchanging heat between a power generation heat medium supplied from an exterior and the working medium, an expander for expanding the working medium, a second heat exchanger having a predetermined space, the second heat exchanger for condensing the working medium, evaporating seawater, and generating water vapor by exchanging heat between the working medium and the seawater supplied to the space, and a working medium pump for feeding the working medium condensed in said second heat exchanger to said first heat exchanger are connected in series; anda power generator to be driven by expanding the working medium in said expander, andsaid desalination apparatus comprising:a suction pump for suctioning a gas in the space of said second heat exchanger;a control device for controlling drive of said suction pump;a condenser for condensing the water vapor by exchanging heat between a cooling medium supplied from the exterior and the water vapor led from the space of said second heat exchanger; anda sweet water ...

Подробнее
Номер записи: 28
10-04-2014 дата публикации

Heat Engine and Heat to Electricity Systems and Methods with Working Fluid Mass Management Control

Номер: US20140096524A1
Автор: Held Timothy James, Hostler Stephen, MILLER Jason D., Vermeersch Michael, Xie Tao
Принадлежит: ECHOGEN POWER SYSTEMS, LLC

Aspects of the disclosure generally provide a heat engine system and a method for regulating a pressure and an amount of a working fluid in a working fluid circuit during a thermodynamic cycle. A mass management system may be employed to regulate the working fluid circulating throughout the working fluid circuit. The mass management systems may have a mass control tank fluidly coupled to the working fluid circuit at one or more strategically-located tie-in points. A heat exchanger coil may be used in conjunction with the mass control tank to regulate the temperature of the fluid within the mass control tank, and thereby determine whether working fluid is either extracted from or injected into the working fluid circuit. Regulating the pressure and amount of working fluid in the working fluid circuit selectively increases or decreases the suction pressure of the pump to increase system efficiency. 1. A heat engine system , comprising:a working fluid circuit configured to circulate a working fluid through a high pressure side and a low pressure side of the working fluid circuit;a first heat exchanger fluidly coupled to the working fluid circuit, configured to be fluidly coupled to and in thermal communication with a heat source, and configured to transfer thermal energy from the heat source to the working fluid within the high pressure side of the working fluid circuit;a second heat exchanger fluidly coupled to the working fluid circuit, configured to be fluidly coupled to and in thermal communication with the heat source, and configured to transfer thermal energy from the heat source to the working fluid within the high pressure side of the working fluid circuit;an expander fluidly coupled to the working fluid circuit between the low pressure side and the high pressure side and disposed downstream of the first heat exchanger or the second heat exchanger in the working fluid circuit;a recuperator fluidly coupled to the low pressure side and the high pressure side of ...

Подробнее
Номер записи: 29
01-01-2015 дата публикации

Auxiliary steam generator system for a power plant

Номер: US20150000276A1
Автор: Andre Schrief, Heiner Edelmann, Marc Sattelberger, Mark Reissig
Принадлежит: SIEMENS AG

An auxiliary steam generator system for a power plant, comprising a water-steam circuit, which has a condensate line and a feed-water line, wherein a condensate pump is connected in the condensate line and a feed-water pump is connected in the feed-water line, and wherein a pressure accumulating vessel is connected between the condensate pump and the feed-water pump, and wherein a feed-water take-off line is connected to the water-steam circuit at a branch-off point after the pressure accumulating vessel is provided. The feed-water take-off line is connected to the pressure accumulating vessel and a heating device is connected in the feed-water take-off line.

Подробнее
Номер записи: 30
02-01-2020 дата публикации

Systems and Methods for Generating Electricity Via a Pumped Thermal Energy Storage System

Номер: US20200003080A1
Автор: Held Timothy
Принадлежит:

Systems and methods are provided for generating electricity via a pumped thermal energy storage (“PTES”) system. A system may include a pump configured to circulate a working fluid within a fluid circuit, wherein the working fluid enters the pump at a first pressure and exits at a second pressure; a first heat exchanger; a second heat exchanger; a turbine positioned between the first heat exchanger and the second heat exchanger, configured to expand a first portion of the working fluid to the first pressure; a heat rejection heat exchanger configured to remove thermal energy from a second portion of the working fluid; a high temperature reservoir connected to the first heat exchanger; and a low temperature reservoir connected to the second heat exchanger. 1. A generation system in a pumped thermal energy storage (“PTES”) system , comprising: a pump to circulate the working fluid within the fluid circuit, wherein the working fluid enters the pump at a first pressure, and the working fluid exits the pump at a second pressure,', 'a first heat exchanger through which the working fluid circulates in use,', 'a second heat exchanger through which the working fluid circulates in use,', 'a turbine positioned between the first heat exchanger and the second heat exchanger, the turbine for expanding the working fluid to a third pressure, the third pressure greater than the first pressure and less than the second pressure,', 'a separation location where the working fluid is separated into the first portion and the second portion,', 'an auxiliary line through which the second portion of the working fluid circulates between the turbine and the first heat exchanger,', 'a heat rejection heat exchanger positioned between an outlet of the turbine and an inlet of the first heat exchanger, and in fluid communication with the auxiliary line, wherein the heat rejection heat exchanger for removing thermal energy from the second portion of the working fluid;, 'a fluid circuit for the ...

Подробнее
Номер записи: 31
02-01-2020 дата публикации

Systems and Methods for Generating Electricity Via a Pumped Thermal Energy Storage System

Номер: US20200003081A1
Автор: Held Timothy
Принадлежит:

Systems and methods are provided for charging a pumped thermal energy storage (“PTES”) system. A system may include a compressor or pump configured to circulate a working fluid within a fluid circuit, wherein the working fluid enters the pump at a first pressure and exits at a second pressure; a first heat exchanger through which the working fluid circulates in use; a second heat exchanger through which the working fluid circulates in use; a third heat exchanger through which the working fluid circulates in use, a turbine positioned between the first heat exchanger and the second heat exchanger, configured to expand the working fluid to the first pressure; a high temperature reservoir connected to the first heat exchanger; a low temperature reservoir connected to the second heat exchanger, and a waste heat reservoir connected to the third heat exchanger. 1. A charging system in a pumped thermal energy storage (“PTES”) system , comprising: a first heat exchanger through which the working fluid circulates in use;', 'a second heat exchange through which the working fluid circulates in use;', 'a third heat exchanger through which the working fluid circulates in use;', wherein the working fluid enters the second heat exchanger at a first temperature and the working fluid exits the second heat exchanger at a second temperature,', 'wherein the working fluid enters the third heat exchanger at the second temperature and the working fluid exits the third heat exchanger at a third temperature,', 'wherein the working fluid enters the compressor at the third temperature and a first pressure, and the working fluid exits the compressor at a fourth temperature and a second pressure, and', 'wherein the working fluid enter the first heat exchanger at the fourth temperature and the working fluid exits the first heat exchanger at a fifth temperature, the fifth temperature being lower than the fourth temperature;, 'a compressor through which the working fluid circulates in use,'}, 'a ...

Подробнее
Номер записи: 32
09-01-2020 дата публикации

HEAT OF EVAPORATION BASED HEAT TRANSFER FOR TUBELESS HEAT STORAGE

Номер: US20200011208A1
Автор: Pranov Henrik
Принадлежит:

Disclosed is a thermal storage solution which can operate without any internal tubing or mechanical pumping in the heat reservoir, and features a heat transfer technology based on evaporation and condensation of heat transfer fluids that will prevent hot and cold zones in the thermal storage reservoir. The main advantage is that the reservoir will have a much lower cost, have more degrees of freedom regarding the interplay between storage capacity, input and output power, and can operate without any mechanical or pressurized parts. 1. A thermal storage , comprising at least the following parts:a heat storage reservoir comprising of a solid, non-porous, granular material,an input system comprising of a heat source and a system to generate a vapor phase of a heat transfer fluid or mixtures or multitude thereof and to pass the vapor phase heat transfer fluid or mixtures or multitudes thereof to contact the granular material in the heat storage reservoir,an output system comprising a heat sink, a system to inject a liquid fluid into the heat storage reservoir, and a system to collect an evaporated fluid generated by contact of the liquid fluid with the granular material in the heat storage reservoir,and characterized by having a liquid, recovery system that recovers a liquid from the heat storage reservoir to be supplied to the input system or the output system, wherein the recovered, liquid supplied to the input system is generated by contact of the vapor phase of the heat transfer fluid or mixtures or multitudes thereof with the granular material in the heat storage reservoir, or wherein the recovered liquid supplied to the output system is a non-evaporated liquid fluid from the output system that contacts the granular material without evaporating.2. A thermal storage according to where the heat storage reservoir granular material comprises stones with a diameter between 10 and 300 mm with a convex shape and a filling ratio between 0.5 and 0.9.3. A thermal storage ...

Подробнее
Номер записи: 33
03-02-2022 дата публикации

HEAT UTILIZATION SYSTEM, AND HEAT GENERATING DEVICE

Номер: US20220034599A1
Автор: HIRANO Shotaro, IBARAKI Tetsuharu, ISE Masahide, ITO Takehiko, Iwamura Yasuhiro, KASAGI Jirota, Yoshino Hideki
Принадлежит:

Provided are a novel heat utilization system and heat generating device that utilize an inexpensive, clean, and safe heat energy source. A heat utilization system includes a heat-generating element configured to generate heat by occluding and discharging hydrogen, a sealed container having a first chamber and a second chamber partitioned by the heat-generating element , and a temperature adjustment unit configured to adjust a temperature of the heat-generating element . The first chamber and the second chamber have different hydrogen pressures. The heat-generating element includes a support element made of at least one of a porous body, a hydrogen permeable film, and a proton conductor, and a multilayer film supported by the support element . The multilayer film has a first layer made of a hydrogen storage metal or a hydrogen storage alloy and having a thickness of less than 1000 nm and a second layer made of a hydrogen a hydrogen storage metal different from that of the first layer, a hydrogen storage alloy different from that of the first layer, or ceramics and having a thickness of less than 1000 nm. 1. A heat utilization system comprising:a heat-generating element configured to generate heat by occluding and discharging hydrogen;a sealed container having a first chamber and a second chamber partitioned by the heat-generating element;a temperature adjustment unit configured to adjust a temperature of the heat-generating element; anda heat utilization device configured to utilize, as a heat source, a heat medium heated by a heat of the heat-generating element, whereinthe first chamber and the second chamber have different hydrogen pressures,the heat-generating element includes a support element made of at least one of a porous body, a hydrogen permeable film, and a proton conductor, and a multilayer film supported by the support element, andthe multilayer film has a first layer made of a hydrogen storage metal or a hydrogen storage alloy and having a thickness of ...

Подробнее
Номер записи: 34
19-01-2017 дата публикации

EXHAUST FLOW MODIFIER, DUCT INTERSECTION INCORPORATING THE SAME, AND METHODS THEREFOR

Номер: US20170015908A1
Автор: Choi Chun Wai, Chun Ung-Kyung, Kapoor Rajat, Quanci John Francis
Принадлежит:

A duct intersection comprising a first duct portion and a second duct portion extending laterally from a side of the first duct portion. At least one flow modifier is mounted inside one of the first and second duct portions. The flow modifier is a contoured duct liner and/or the flow modifier includes at least one turning vane. The duct intersection may also include a transition portion extending between the first and second duct portions, wherein the transition portion has a length extending along a side of the first duct portion and a depth extending away from the side of the first duct portion, wherein the length is greater than a diameter of the second duct portion. 110-. (canceled)11. A contoured duct liner for use in a duct intersection , comprising:a first wall contoured to mate with an inside surface of a duct intersection; anda second wall attached to the first wall, wherein the second wall is contoured to modify the direction of gas flow within the duct intersection.12. The contoured duct liner according to claim 11 , wherein the second wall includes at least one convex surface.13. The contoured duct liner according to claim 11 , wherein the second wall comprises a refractory material.14. A coking facility exhaust system claim 11 , comprising:an emergency stack;a crossover duct extending laterally from a side of the emergency stack; anda contoured duct liner, including a convex surface operative to modify the direction of gas flow proximate an intersection of the emergency stack and crossover duct.15. The coking facility exhaust system according to claim 14 , further comprising a second contoured duct liner disposed on an inside surface of the crossover duct.16. An improved coking facility exhaust system including an emergency stack and a crossover duct extending laterally from a side of the emergency stack claim 14 , the improvement comprising:a contoured duct liner, including a convex surface operative to modify the direction of gas flow proximate an ...

Подробнее
Номер записи: 35
19-01-2017 дата публикации

STEAM POWER INSTALLATION COMPRISING VALVE-STEM LEAKAGE STEAM LINE

Номер: US20170016351A1
Автор: Dhima Rachid, Naskidashvili Kakhi
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A steam power installation has a steam turbine and a valve-stem leakage steam line. A fitting is arranged in the valve-stem leakage steam line, which fitting is used to conduct the valve-stem leakage steam into a suitable valve-stem leakage steam collector, such as into a condenser. 1. A steam power plant comprisinga steam turbine,a steam line that is fluidically connected to the steam turbine and is designed to convey steam,a valve that is arranged in the steam line and is designed to change a quantity of steam flowing through the steam line,wherein, in operation, valve-stem leakage steam arises in the valve and is fluidically connected to a valve-stem leakage steam line, anda valve-stem leakage steam collector that is fluidically connected to the valve-stem leakage steam line,a fitting that is arranged in the valve-stem leakage steam line,wherein the valve-stem leakage steam collector is designed as a condenser.2. The steam power plant as claimed in claim 1 ,wherein the fitting is designed as a flap.3. The steam power plant as claimed in claim 2 ,wherein the flap is designed such that it is controlled.4. The steam power plant as claimed in claim 2 ,wherein the flap is designed as a check flap.5. The steam power plant as claimed in claim 1 ,wherein the fitting is designed as a valve.6. The steam power plant as claimed in claim 1 , further comprising:a safety valve is arranged in the valve-stem leakage steam line.7. A method for operating a plant as claimed in claim 1 , comprising:opening the fitting opens when valve-stem leakage steam is present upstream of the fitting andclosing the fitting again when no valve-stem leakage steam flows from the valve.8. The method as claimed in claim 7 ,wherein the safety valve opens as soon as a maximum pressure in the valve-stem leakage steam line has been reached. This application is the US National Stage of International Application No. PCT/EP2015/054355 filed Mar. 3, 2015, and claims the benefit thereof. The International ...

Подробнее
Номер записи: 36
19-01-2017 дата публикации

Liquid Air Energy Storage Systems, Devices, and Methods

Номер: US20170016577A1
Автор: Leon Afremov, Stanislav Sinatov
Принадлежит: MADA ENERGIE LLC

Liquid air energy storage (LAES) systems with increased efficiency and operating profit obtained through rational selection and configuration of the equipment used and optimization of the configuration/parameters of such equipment. In various embodiments, the LAES system is intended for operation preferably in an environmentally-friendly stand-alone regime with recovery of hot thermal energy extracted from compressed charging air and cold thermal energy extracted from discharged air.

Подробнее
Номер записи: 37
18-01-2018 дата публикации

REHEATING OF A WORKING FLUID WITHIN A TURBINE SYSTEM FOR POWER GENERATION

Номер: US20180016945A1
Автор: Hume Scott Alexander, Thimsen David
Принадлежит:

An in-situ incremental reheating system configured to increase steam temperature and thermodynamic efficiencies of a steam turbine is disclosed. The system includes a pump; a radiant heater; piping inter-connecting the pump, radiant heater and steam turbine to create a flow circuit; and a heat transfer material configured to flow through the flow circuit and transfer heat directly to steam used in the steam turbine. The pump moves the heat transfer material through the flow circuit and the radiant heater regenerates the heat transfer material after the heat transfer material transfers heat to the steam. 1. An in-situ incremental reheating system configured to increase steam temperature and thermodynamic efficiencies of a steam turbine , comprising:(a) a pump;(b) a radiant heater;(c) piping inter-connecting the pump, radiant heater and steam turbine to create a flow circuit;(d) a heat transfer material configured to flow through the flow circuit and transfer heat directly to steam used in the steam turbine, wherein the pump moves the heat transfer material through the flow circuit and the radiant heater regenerates the heat transfer material after the heat transfer material transfers heat to the steam.2. The reheating system of claim 1 , wherein the heat transfer material is a liquid salt.3. The reheating system of claim 1 , wherein the heat transfer material is a liquid metal.4. The reheating system of claim 1 , wherein the heat transfer material is heated up to a temperature of 1400 degrees Fahrenheit (760 degrees Celsius).5. The reheating system of claim 1 , wherein the heat transfer material flows through internal flow passages of stator blades of the steam turbine to transfer heat directly to the steam.6. An in-situ incremental reheating system configured to increase steam temperature and thermodynamic efficiencies of a steam turbine having a high pressure turbine claim 1 , an intermediate pressure turbine claim 1 , and a low pressure turbine claim 1 , the ...

Подробнее
Номер записи: 38
18-01-2018 дата публикации

APPARATUS AND METHOD FOR ENERGY STORAGE

Номер: US20180016948A1
Автор: Hutchings Adrian Charles
Принадлежит:

An energy storage apparatus includes a first circuit containing a first phase change material, second circuit containing a second phase change material, and a heat pump having a cold side heat exchanger thermally coupled to the first circuit and a hot side heat exchanger thermally coupled to the second circuit. The apparatus is operable in a charging mode, a storage mode, and a discharge mode. In the charging mode the heat pump is energized to cool the first phase change material and heat the second phase change material. In the storage mode the first phase change material is stored in a first storage vessel and the second phase change material is stored as a pressurized vapor in a second storage vessel. In the discharge mode vaporized first phase change material is expanded by a first expander, or the vaporized second phase change material is expanded by a second expander. 1. An energy storage apparatus comprising:a first fluidic circuit containing a first phase change material, the first fluidic circuit including a first storage vessel and a first expander;a second fluidic circuit containing a second phase change material having a boiling point greater than a boiling point of the first phase change material, the second fluidic circuit including a second storage vessel and a second expander; anda heat pump having a cold side heat exchanger thermally coupled to the first fluidic circuit and a hot side heat exchanger thermally coupled to the second fluidic circuit,the apparatus being operable in a charging mode, a storage mode following the charging mode, and a discharge m ode following the storage mode;wherein in the charging mode the heat pump is energized to cool the first phase change material and heat the second phase change material;in the storage, mode the first phase change material is stored in the first storage vessel and the second phase change material is stored as a pressurized vapor in the second storage vessel; andin the discharge mode vaporized first ...

Подробнее
Номер записи: 39
25-01-2018 дата публикации

SOLAR POWER PLANT COMPRISING A FIRST HEAT TRANSFER CIRCUIT AND A SECOND HEAT TRANSFER CIRCUIT

Номер: US20180023421A1
Автор: FEDERSEL Katharina, LANDENBERGER Michael, Maurer Stephan, Wortmann Jürgen
Принадлежит:

The invention relates to a solar power plant with a first heat transfer medium circuit and with a second heat transfer medium circuit, in which the first heat transfer medium circuit comprises a store () for hot heat transfer medium and a store () for cold heat transfer medium and also a pipeline system () connecting the stores () for hot heat transfer medium and for cold heat transfer medium and leading through a solar array (), and the second heat transfer medium circuit comprises a pipeline system () connecting the stores () for hot heat transfer medium and for cold heat transfer medium and in which at least one heat exchanger () for the evaporation and superheating of water is accommodated, the at least one heat exchanger () having a region through which the heat transfer medium flows and a region through which water flows, said regions being separated by a heat-conducting wall, so that heat can be transmitted from the heat transfer medium to the water. Each heat exchanger () has a break detection system (), by means of which a possible break of the heat-conducting wall can be detected, and valves () for the closing of supply lines () and outflow lines () for heat transfer medium and water, upon the detection of a break the valves () in the supply lines () and outflow lines () for heat transfer medium and water being closed. 116.-. (canceled)17. A solar power plant with a first heat transfer medium circuit and with a second heat transfer medium circuit , in which the first heat transfer medium circuit comprises a store for hot heat transfer medium and a store for cold heat transfer medium and also a pipeline system connecting the stores for hot heat transfer medium and for cold heat transfer medium and leading through a solar array , and the second heat transfer medium circuit comprises a pipeline system connecting the stores for hot heat transfer medium and for cold heat transfer medium and in which at least one heat exchanger for the evaporation and ...

Подробнее
Номер записи: 40
10-02-2022 дата публикации

PUMPED THERMAL STORAGE CYCLES WITH TURBOMACHINE SPEED CONTROL

Номер: US20220042720A1
Автор: Cizek Nicholas, Larochelle Philippe, Laughlin Robert B.
Принадлежит:

The present disclosure provides pumped thermal energy storage systems that can be used to store electrical energy. A pumped thermal energy storage system of the present disclosure can store energy by operating as a heat pump or refrigerator, whereby network input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. The system can extract energy by operating as a heat engine transferring heat from the hot side to the cold side, which can result in network output. Systems of the present disclosure can employ solar heating for improved storage efficiency. 1. A method of controlling turbomachinery speed , the method comprising:in a closed cycle fluid path of a pumped thermal system operable in a heat engine mode and a heat pump mode, circulating a working fluid through the closed cycle fluid path including, in sequence, a compressor, a hot side heat exchanger, a turbine, and a cold side heat exchanger in both the heat engine mode and the heat pump mode, and circulating a working fluid through the closed cycle fluid path in the same direction through the compressor and the turbine in both the heat engine mode and the heat pump mode;determining an increase in a shaft speed of the turbine; andresponsive to the determination of the increase in the shaft speed of the turbine, transferring a quantity of the working fluid from the closed cycle fluid path to an auxiliary working fluid tank.2. The method of claim 1 , further comprising:responsive to the determination of the increase in the shaft speed of the turbine, changing a flow rate of a hot side thermal storage (“HTS”) media through the hot side heat exchanger, wherein the HTS media is in thermal contact with working fluid.3. The method of claim 1 , further comprising:responsive to the determination of the increase in the shaft speed of the turbine, changing ...

Подробнее
Номер записи: 41
29-01-2015 дата публикации

Method to integrate regenerative rankine cycle into combined cycle applications

Номер: US20150027121A1
Автор: Kincaid Ronald Farris, Skowronski Mark Joseph
Принадлежит:

A system is disclosed that incorporates a regenerative Rankine cycle integrated with a conventional combined cycle. An added duct firing array, typically located after the combustion turbine exhaust and before the conventionally designed Heat Recovery Steam Generator (HRSG), is used to boost enthalpy of said exhaust. An added heating element downstream of the firing array provides sufficient heating for sensible heating, evaporation and superheating of feedwater that has been previously heated by feedwater heaters as part of a regenerative Rankine cycle. In practice, the condensate stream from the condenser is bifurcated such that a dedicated feedwater flow is directed to feedwater heaters. After further heating in the added heating element, the superheated steam, at the same pressure and temperature as the main steam, is now mixed with the main steam prior to turbine entry. The condensate is directed to the HRSG to be heated in conventional fashion. 1. A method for generating electric power that incorporates the use of a regenerative Rankine cycle with a combined cycle , the method comprising the steps of:Bifurcating the condensate from a condenser into two or more separate condensate feed streams whereby the condensate in at least one condensate feed stream is pressurized to feedwater and sent directly to a heat recovery steam generator and the condensate in at least one condensate feed stream is pressurized to feedwater and sent to at least one separately fired heating element first being preheated by a one or more feedwater heaters utilizing extraction steam from an extraction turbine;generating steam in at least one separately fired heating element and transferring the steam to an extraction steam turbine having one or more extraction ports;converting the steam into electricity through the use of an extraction steam turbine and generator and extracting some of the steam for heating feedwater.2. The method of claim 1 , wherein additional heat enthalpy is ...

Подробнее
Номер записи: 42
29-01-2015 дата публикации

ENERGY STORAGE POWER PLANT AMD METHOD FOR OPERATING SUCH A POWER PLANT

Номер: US20150027122A1
Автор: Brunhuber Christian, Graeber Carsten, Zimmermann Gerhard
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An energy storage power plant for harvesting electric energy, and suitable for converting electric energy into thermal energy is provided. The thermal energy can be temporarily stored in at least two thermal stores until demanded and retrieved to increase the energy content of water in a water circuit upon demand. The power plant has the at least two thermal stores, each has at least one converting device that allows electric energy to be directly or indirectly converted into thermal energy, the thermal stores being thermally chargeable by temporarily storing thermal energy, wherein one thermal store is for storing sensible heat and one thermal store is for storing latent heat; and at least one energy generating unit operated using the water in the water circuit, the energy content of the water having been increased by the temporary storage of thermal energy, in order to generate electric energy when operated.

Подробнее
Номер записи: 43
23-01-2020 дата публикации

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

Номер: US20200025042A1
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, wherein the closed cycle system comprises (i) a first fluid connection between the high pressure leg and a high pressure tank and connected to the high pressure leg between an outlet of the hot side heat exchanger and an inlet of the turbine and (ii) a second fluid connection between the high pressure leg and an intermediate pressure tank and connected to the high pressure leg between the outlet of the hot side heat exchanger and the inlet of the turbine, and wherein the closed cycle system is configured to cycle between a charge mode and a discharge mode;determining an operating condition of the closed cycle system;defining a first threshold pressure value based on the determination of the operating condition of the closed cycle system;removing a first quantity of working fluid from the closed cycle fluid path by opening the first fluid connection, 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 ...

Подробнее
Номер записи: 44
23-01-2020 дата публикации

Modular Thermal Storage

Номер: US20200025076A1
Автор: Apte Raj B., Green Julian, Larochelle Philippe
Принадлежит:

A power generation system comprising a shared hot side thermal store, a shared cold side thermal store, a plurality of power subunits, and an electrical bus is disclosed. Each of the power subunits may connected or isolated from the shared hot side thermal store and/or the shared cold side thermal store. 1. A pumped thermal system comprising:a shared hot side thermal store comprising a hot thermal storage (“HTS”) medium;a shared cold side thermal store comprising a cold thermal storage (“CTS”) medium; and a compressor,', 'a hot side heat exchanger,', 'a turbine,', 'a cold side heat exchanger,', 'a working fluid circulating in a closed cycle path, wherein the closed cycle path comprises, in sequence, the compressor, the hot side heat exchanger, the turbine, and the cold side heat exchanger, and', 'a valve arrangement configurable to be in a connected state or an isolated state, wherein in the connected state the valve arrangement is configured to connect the hot side heat exchanger to the shared hot side thermal store and to connect the cold side heat exchanger to the shared cold side thermal store, wherein in the isolated state, the valve arrangement is configured to isolate the hot side heat exchanger from the shared hot side thermal store and to isolate the cold side heat exchanger from the shared cold side thermal store., 'a plurality of power subunits configured to share the shared hot side thermal store and the shared cold side thermal store, each power subunit comprising2. The pumped thermal system of claim 1 , wherein each power subunit of the plurality of power subunits further comprises a recuperator claim 1 , wherein the closed cycle path of each power subunit of the plurality of power subunits further comprises claim 1 , in sequence claim 1 , the compressor claim 1 , the recuperator claim 1 , the hot side heat exchanger claim 1 , the turbine claim 1 , the recuperator claim 1 , and the cold side heat exchanger.3. The pumped thermal system of claim 1 , ...

Подробнее
Номер записи: 45
04-02-2016 дата публикации

Apparatus and Method for Storing Energy

Номер: US20160032783A1
Автор: Howes Jonathan Sebastian, Macnaghten James
Принадлежит:

In an energy storage and recovery system, working fluid from a first vessel is compressed by power machinery and passes, via a regenerator, into a second vessel, where it is forced to condense, the temperature and pressure of the saturated working liquid/vapour mixture continuously rising during storage. The stored energy is recovered by the vapour returning through the regenerator and power machinery where it expands to produce work before condensing back into the first vessel. The regenerator comprises a gas permeable, solid thermal storage medium which, during storage, stores superheat and some latent heat from the vapour passing through it in respective downstream regions that exhibit continuously increasing temperature profiles during storage and a small temperature difference with the surrounding vapour, thereby minimising irreversible losses during the thermal energy transfers. 1. An energy storage and recovery system comprising:{'sub': 1', 'L1, 'a first vessel configured to store a working fluid as a saturated liquid/vapour mixture Lhaving a temperature T;'}{'sub': 2', 'L2, 'a second vessel configured to store the working fluid as a saturated liquid/vapour mixture Lhaving a temperature T;'}power machinery disposed between the first and second vessels; anda regenerator disposed between the power machinery and liquid of the working fluid stored in the second vessel, [{'sub': 2', 'L2', '2', '2, '(i) in a storage mode, working fluid vapour passes from the first vessel to the power machinery where the working fluid vapour is compressed before passing through the regenerator and condensing in working fluid liquid of the mixture Lin the second vessel, so as to produce a progressive increase in the temperature Tof the mixture Land in a liquid/vapour equilibrium phase change temperature of the mixture Lduring the storage mode; and,'}, {'sub': 1', 'L2', '2', '2, '(ii) in a recovery mode, working fluid vapour passes from the second vessel, through the regenerator to ...

Подробнее
Номер записи: 46
17-02-2022 дата публикации

PUMPED HEAT ENERGY STORAGE SYSTEM WITH ELECTRIC HEATING INTEGRATION

Номер: US20220049630A1
Автор: Bollinger Benjamin R., Truong Bao H.
Принадлежит:

A method including: (i) operating a pumped-heat energy storage system (“PHES system”) in a charge mode to convert electricity into stored thermal energy in a hot thermal storage medium (“HTS medium”) by transferring heat from a working fluid to a warm HTS medium, resulting in a hot HTS medium, wherein the PHES system is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity; and (ii) heating the hot HTS medium with an electric heater above a temperature achievable by transferring heat from the working fluid to the warm HTS medium. 1. A method comprising:operating a pumped-heat energy storage (“PHES”) system in a charge mode to convert electricity into stored thermal energy in a hot thermal storage (“HTS”) medium by transferring heat from a working fluid to a warm HTS medium, resulting in the hot HTS medium, wherein the PHES system is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity; andheating the hot HTS medium with an electric heater above a temperature achievable by transferring heat from the working fluid to the warm HTS medium.2. The method of claim 1 , wherein operating the PHES system in the charge mode comprises circulating the working fluid through at least a compressor system claim 1 , a hot-side heat exchanger system claim 1 , a turbine system claim 1 , a cold-side heat exchanger system claim 1 , and back to the compressor system.3. The method of claim 1 , further comprising:receiving electricity from a power generation plant; andsupplying the received electricity to the electric heater.4. The method of claim 1 , wherein heating the hot HTS medium with the electric heater above the temperature achievable by transferring heat from the working fluid to the warm HTS medium occurs claim 1 , at least partially claim 1 , during operation of the PHES system in the charge mode.5. The method of claim 1 , wherein heating the hot HTS medium ...

Подробнее
Номер записи: 47
17-02-2022 дата публикации

COMBINED-CYCLE POWER PLANT WITH THERMAL ENERGY STORAGE

Номер: US20220049631A1
Автор: Deng Benajmin Shimin
Принадлежит:

A power plant can comprise a gas turbine productive of an exhaust gas, a steam turbine, a heat recovery steam generator that extracts heat from gas turbine exhaust gas and supplies fluid to the steam turbine, a thermal storage unit storing a thermal storage working medium that is configured to discharge thermal energy into the fluid supplied from the heat recovery steam generator to supplement power generation by the steam turbine, a first heat exchanger disposed within the heat recovery steam generator to transfer thermal energy from the exhaust gas to the thermal storage working medium, and a second heat exchanger in flow communication with the heat recovery steam generator and the thermal storage unit, the second heat exchanger facilitating a direct heat transfer of thermal energy from the thermal storage working medium in the thermal storage unit to the fluid supplied from the heat recovery steam generator. 1. A power plant , comprising:a gas turbine productive of an exhaust gas;a steam turbine;a heat recovery steam generator that extracts heat from the exhaust gas and supplies heated fluid to the steam turbine;a thermal storage unit storing a thermal storage working medium that is configured to discharge thermal energy into the heated fluid supplied from the heat recovery steam generator to supplement power generation by the steam turbine;a first heat exchanger disposed within the heat recovery steam generator to transfer thermal energy from the exhaust gas to the thermal storage working medium; anda second heat exchanger in flow communication with the heat recovery steam generator and the thermal storage unit, the second heat exchanger facilitating a direct heat transfer of thermal energy from the thermal storage working medium in the thermal storage unit to the heated fluid supplied from the heat recovery steam generator.2. The power plait of claim 1 , wherein the thermal storage unit includes a cold tank containing the thermal storage working medium in a ...

Подробнее
Номер записи: 48
17-02-2022 дата публикации

Pumped heat energy storage system with thermal plant integration

Номер: US20220049652A1
Автор: Bao H. Truong, Benjamin R. Bollinger
Принадлежит: Malta Inc

The present disclosure provides pumped heat energy storage systems that can be used to store and/or extract electrical energy. A pumped heat energy storage system of the present disclosure can store energy by operating as a heat pump, whereby net work input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. Such pumped energy storage systems can be beneficially integrated with thermal plants to provided heat transfer to and/or from the thermal plants.

Подробнее
Номер записи: 49
11-02-2016 дата публикации

COMBINED HEAT AND POWER SYSTEM

Номер: US20160040556A1
Автор: Hikichi Takumi, KIDO OSAO, KOSUDA OSAMU, Okaichi Atsuo
Принадлежит:

A CHP system includes a combustor (heat source), a Rankine cycle apparatus, and a second heat exchanger. The Rankine cycle apparatus includes, as an evaporator, a first heat exchanger that absorbs thermal energy produced in the combustor. The second heat exchanger is located closer to the combustor than is the evaporator, absorbs thermal energy produced in the combustor, and transfers the thermal energy to a heat medium. 1. A combined heat and power system comprising:a heat source;a Rankine cycle apparatus comprising, as an evaporator for heating a working fluid, a first heat exchanger that absorbs thermal energy produced in the heat source; anda second heat exchanger that is a heat exchanger for heating a heat medium different from the working fluid of the Rankine cycle apparatus, that is located closer to the heat source than is the first heat exchanger, and that absorbs thermal energy produced in the heat source and transfers the thermal energy to the heat medium, whereinthe working fluid is an organic working fluid,the heat medium is in a single-phase state selected from a gas-phase state and a liquid-phase state in the second heat exchanger, andin a flow path of a medium that imparts the thermal energy to the working fluid and the heat medium, a heat exchanger used to heat the working fluid is provided only downstream of the second heat exchanger.2. The combined heat and power system according to claim 1 , wherein the second heat exchanger is in direct contact with the first heat exchanger or in indirect contact with the first heat exchanger via a thermally-conductive member.3. The combined heat and power system according to claim 1 , wherein the heat source is a combustor that produces flame and combustion gas that serves as the medium.4. The combined heat and power system according to claim 3 , wherein the first heat exchanger and the second heat exchanger are disposed on the flow path of the combustion gas so that the combustion gas passes through the second ...

Подробнее
Номер записи: 50
08-02-2018 дата публикации

DISPATCHABLE COMBINED CYCLE POWER PLANT

Номер: US20180038352A1
Автор: CONLON William M.
Принадлежит:

A combined cycle power plant comprises a combustion turbine generator, another heat source in addition to the combustion turbine generator, a steam power system, and an energy storage system. Heat from the heat source, from the energy storage system, or from the heat source and the energy storage system is used to generate steam in the steam power system. Heat from the combustion turbine generator exhaust gas may be used primarily for single phase heating of water or steam in the steam power system. Alternatively, heat from the combustion turbine generator exhaust gas may be used in parallel with the energy storage system and/or the other heat source to generate steam, and additionally to super heat steam. Both the combustion turbine generator and the steam power system may generate electricity. 1. A combined cycle electric power plant comprising:a combustion turbine generator that combusts fuel to generate electricity and produce hot exhaust gases;a second heat source other than the combustion turbine;a thermal energy storage system that stores heat transferred from the second heat source;a steam turbine generator that expands superheated steam across a steam turbine to generate electricity;a first boiler; anda superheater;wherein the combined cycle electric power plant has a first mode of operation in which the superheated steam is produced by heating condensate from the steam turbine generator primarily with heat from the combustion turbine exhaust gases to produce hot liquid feedwater, boiling the hot liquid feedwater in the first boiler with heat primarily from the second heat source, from the thermal energy storage system, or from the second heat source and the thermal energy storage system to produce steam, and superheating the steam in the superheater primarily with additional heat from the combustion turbine exhaust gases.2. The combined cycle electric power plant of claim 1 , wherein in the first mode of operation the superheated steam is produced by ...

Подробнее
Номер записи: 51
24-02-2022 дата публикации

SYSTEMS AND METHODS FOR GENERATING ELECTRICITY VIA A PUMPED THERMAL ENERGY STORAGE SYSTEM

Номер: US20220056817A1
Автор: Held Timothy
Принадлежит:

Systems and methods are provided for charging a pumped thermal energy storage (“PTES”) system. A system may include a compressor or pump configured to circulate a working fluid within a fluid circuit, wherein the working fluid enters the pump at a first pressure and exits at a second pressure; a first heat exchanger through which the working fluid circulates in use; a second heat exchanger through which the working fluid circulates in use; a third heat exchanger through which the working fluid circulates in use, a turbine positioned between the first heat exchanger and the second heat exchanger, configured to expand the working fluid to the first pressure; a high temperature reservoir connected to the first heat exchanger; a low temperature reservoir connected to the second heat exchanger, and a waste heat reservoir connected to the third heat exchanger. 1. A charging system in a pumped thermal energy storage (“PTES”) system , comprising: a first heat exchanger;', 'a second heat exchanger;', 'a third heat exchanger;', 'a recuperator; and', 'a compressor,', the working fluid enters the second heat exchanger at a first temperature and exits the second heat exchanger at a second temperature,', 'the working fluid splits into a first portion and a second portion after exiting the second heat exchanger at the second temperature and before entering the recuperator;', 'the first portion of the working fluid enters the recuperator from the split at the second temperature and exits at a third temperature;', 'the second portion of the working fluid enters the third heat exchanger from the split at the second temperature and exits the third heat exchanger at a fourth temperature,', 'the first portion of the working fluid and the second portion are combined upon the first portion exiting the recuperator at the third temperature and upon the second portion exiting the third heat exchanger at the fourth temperature;', 'the combined first portion of the working fluid and the second ...

Подробнее
Номер записи: 52
15-02-2018 дата публикации

Power Generation from Low-Temperature Heat by Hydro-Osmotic Processes

Номер: US20180043308A1
Автор: Iyer Subramanian
Принадлежит: NRGTEK, Inc.

A system and method for generating power from waste heat, the system including (1) a forward osmosis module having an FO membrane a water inlet, a water outlet, a draw solution solute inlet and a diluted draw solution outlet; (2) a hydro-turbine using the diluted draw solution for generating power; (3) a COabsorption reactor to permit the introduction of compressed COinto the diluted draw solution to cause substantial separation of draw solution solute from the water, which water can be processed for subsequent recycling to the FO module, the COabsorption reactor configured to discharge a mixture of separate draw solution solute and absorbed CO; and (4) a heat exchanger for transferring waste heat from an incoming heated fluid to the mixture of draw solution solute and CO. 1. A system for generating power from waste heat using osmotic polymers that can be regenerated using COabsorption , the system comprising:a forward osmosis (FO) module comprising an FO membrane configured to permit the passage of an osmotic polymer draw solution solute along the membrane to draw water across the membrane, the FO module further comprising a water inlet connected to a water inlet line and a water outlet connected to a water outlet line, the FO module further comprising a draw solution solute inlet connected to a draw solution solute inlet line and diluted draw solution outlet connected to a diluted draw solution outlet line;a hydro-turbine connected to the diluted draw solution outlet line for generating power as diluted draw solution passes therethrough;{'sub': 2', '2', '2', '2, 'a COabsorption reactor configured to permit the introduction of compressed COinto the diluted draw solution so as to cause substantial separation of draw solution solute from the water, which water can be processed for subsequent recycling to the FO module for continued power generation during the forward osmosis cycle, the COabsorption reactor configured to discharge a mixture of separate draw solution ...

Подробнее
Номер записи: 53
25-02-2021 дата публикации

MODULAR THERMAL STORAGE

Номер: US20210054785A1
Автор: Apte Raj B., Green Julian, Larochelle Philippe
Принадлежит:

A power generation system comprising a shared hot side thermal store, a shared cold side thermal store, a plurality of power subunits, and an electrical bus is disclosed. Each of the power subunits may connected or isolated from the shared hot side thermal store and/or the shared cold side thermal store. 1. A pumped thermal system comprising:a shared cold-side thermal store comprising a cold thermal storage (“CTS”) medium; and a compressor,', 'a hot-side heat exchanger,', 'a turbine,', 'a cold-side heat exchanger,', 'a working fluid circulating in a closed cycle path, wherein the closed cycle path comprises, in sequence, the compressor, the hot-side heat exchanger, the turbine, and the cold-side heat exchanger, and', 'a valve arrangement configurable to be in a connected state or an isolated state, wherein in the connected state the valve arrangement is configured to connect the cold-side heat exchanger to the shared cold-side thermal store, wherein in the isolated state, the valve arrangement is configured to isolate the cold-side heat exchanger from the shared cold-side thermal store., 'a plurality of power subunits configured to share the shared cold-side thermal store, each power subunit comprising2. The pumped thermal system of claim 1 , wherein each power subunit of the plurality of power subunits further comprises a recuperator claim 1 , wherein the closed cycle path of each power subunit of the plurality of power subunits further comprises claim 1 , in sequence claim 1 , the compressor claim 1 , the recuperator claim 1 , the hot-side heat exchanger claim 1 , the turbine claim 1 , the recuperator claim 1 , and the cold-side heat exchanger.3. The pumped thermal system of claim 1 , wherein each power subunit of the plurality of power subunits further comprises a recuperator claim 1 , wherein the closed cycle path of each power subunit of the plurality of power subunits further comprises claim 1 , in sequence claim 1 , the compressor claim 1 , the hot-side heat ...

Подробнее
Номер записи: 54
05-03-2015 дата публикации

SYSTEM FOR STORING AND OUTPUTTING THERMAL ENERGY AND METHOD FOR OPERATING SAID SYSTEM

Номер: US20150059342A1
Автор: Krüger Ursus, Reznik Daniel, STIESDAL HENRIK
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A system for storing and outputting thermal energy and a method for operating the system are provided. The system operates according to the Brayton cycle, wherein a heat accumulator is charged by a compressor and a cold accumulator is charged by turbines. The cycle is reversed for discharging. In addition, the cold accumulator supplies a cooling circuit, which provides the cooling for a superconducting generator by a cooling unit. A favorable generator weight can thereby be advantageously achieved in particular for wind turbines, because the generators are limited regarding the weight thereof due to being housed in the nacelle of the wind power plant. Thus, advantageously higher power can be converted in the wind power plant. 1. A plant for storing and releasing thermal energy , comprising: a first thermal fluid energy machine,', 'a heat accumulator,', 'a second thermal fluid energy machine, and', 'a cold accumulator,, 'a charging circuit and a discharging circuit for a working gas, wherein in the charging circuit the following units are interconnected in the specified sequence by means of a line for the working gaswherein the first thermal fluid energy machine is operated as a working machine and the second thermal fluid energy machine is operated as a power machine, as seen in the flow direction of the working gas from the heat accumulator to the cold accumulator, the cold accumulator,', 'a cooling unit, and', 'a cold consumer which is to be cooled., 'wherein the cold accumulator is adapted to be connected into a cooling circuit which is separated from the aforesaid circuits and in which the following units are interconnected in the specified sequence by means of a line for a cooling medium8. A method for storing and releasing thermal energy , comprising: a first thermal fluid energy machine,', 'a heat accumulator,', 'a second thermal fluid energy machine, and', 'a cold accumulator,, 'passing a working gas through a charging circuit or a discharging circuit, ...

Подробнее
Номер записи: 55
01-03-2018 дата публикации

METHODS AND SYSTEMS FOR STORAGE OF RENEWABLE ENERGY SOURCES IN INCREASED ENERGY DENSITY COAL

Номер: US20180058265A1
Автор: Durham Michael D.
Принадлежит:

Methods and systems for reducing carbon dioxide emissions from a coal-fired power plant by using thermal energy from a non-carbon source to reduce the amount of electrical energy needed to reduce the moisture content of coal and increase the energy density of coal prior to combustion are provided. The system includes at least one non-carbon thermal energy source; a coal processing plant configured to reduce the moisture content of coal and produce an increased energy density beneficiated coal, wherein said at least one non-carbon thermal energy source is used to reduce an electrical need of the coal processing plant; and a coal-fired power plant configured to combust the increased energy density beneficiated coal thereby producing electricity on demand at an increased efficiency with reduced carbon dioxide emissions from the plant. The renewable energy source is selected from microwave, hydroelectric power, solar power, wind power, and/or wave power. 1. A system for reducing carbon dioxide emissions from a coal-fired power plant by using electrical energy from a renewable electricity source to reduce the amount of electrical energy needed to increase the energy density in a beneficiated coal comprising:at least one renewable electricity energy source;a coal processing plant, wherein the renewable electricity source is configured to power a coal beneficiation process; anda coal-fired power plant configured to combust the increased energy density beneficiated coal thereby producing electricity on demand at an increased efficiency with reduced carbon dioxide emissions from the plant.2. The system of wherein the renewable electricity source is selected from hydroelectric power claim 1 , solar power claim 1 , wind power claim 1 , wave power and combinations of the foregoing.3. (canceled)4. The system of wherein a location of the coal processing plant is selected from a coal mine claim 1 , a coal transportation terminal claim 1 , a coal-fired power plant claim 1 , a same ...

Подробнее
Номер записи: 56
02-03-2017 дата публикации

DELAYED COKING PLANT COMBINED HEATING AND POWER GENERATION

Номер: US20170058202A1
Автор: Al Saed Hani Mohammed, Noureldin Mahmoud Bahy Mahmoud
Принадлежит:

A system includes a heat exchange system and a power generation system. The heat exchange system includes first, second, and third heat exchangers each operable as a continuous source of heat from a delayed coking plant. The first and second heat exchangers heat first and second fluid streams to produce heated first and second fluid streams, respectively. The heated second fluid stream has a lower temperature and a greater quantity of heat than the heated first fluid stream. The third heat exchanger heats a third fluid stream to produce a heated third fluid stream that includes the heated first fluid stream and a hot fluid stream. The heated third fluid stream has a lower temperature than the heated first fluid stream. The power generation system generates power using heat from the heated second and third fluid streams. 1. A system comprising: a first heat exchanger operable as a continuous source of heat from a delayed coking plant, the first heat exchanger configured to heat a first fluid stream to produce a heated first fluid stream;', 'a second heat exchanger operable as a continuous source of heat from the delayed coking plant, the second heat exchanger configured to heat a second fluid stream to produce a heated second fluid stream, wherein the heated second fluid stream has a lower temperature and a greater quantity of heat than the heated first fluid stream;', 'a third heat exchanger operable as a continuous source of heat to the delayed coking plant, the third heat exchanger configured to heat a third fluid stream to produce a heated third fluid stream, wherein the third fluid stream includes the heated first fluid stream and a hot fluid stream, wherein the heated third fluid stream has a lower temperature than the heated first fluid stream; and, 'a heat exchange system comprisinga power generation system configured to generate power using heat from the heated second fluid stream and the heated third fluid stream.2. The system of claim 1 , further ...

Подробнее
Номер записи: 57
22-05-2014 дата публикации

SOLAR COMBINED CYCLE POWER SYSTEMS

Номер: US20140138959A1
Автор: Karni Jacob, Mandelberg Eli, ZOHAR Yotam
Принадлежит:

Provided is a combined cycle power system including at least one solar power plant including a concentrating dish configured to concentrate solar radiation; a solar receiver disposed and configured to utilize concentrated solar radiation for heating a first working fluid, and a first turbine configured for generating electricity by expansion therein of the heated first working fluid, and at least one recovery power plant including a heat recovery unit configured for utilizing exhaust heat of the first turbine to heat a second working fluid, and a second turbine configured for generating electricity by expansion therein of the heated second working fluid. 124.-. (canceled)25. A combined cycle power system , comprising: a concentrating dish configured to concentrate solar radiation,', 'a solar receiver disposed and configured to utilize concentrated solar radiation for heating a first working fluid, and', 'a first turbine configured for generating electricity by expansion therein of the heated first working fluid; and, 'at least one solar power plant comprising'} a heat recovery unit configured for utilizing exhaust heat of said first turbine to heat a second working fluid, and', 'a second turbine configured for generating electricity by expansion therein of the heated second working fluid., 'at least one recovery power plant comprising'}26. The system according to claim 25 , wherein said heat recovery unit further comprises a heat transfer fluid configured to transfer said exhaust heat from said solar power plant to said recovery power plant.27. The system according to claim 25 , wherein said solar power plant is a Brayton-cycle plant.28. The system according to claim 25 , wherein said recovery power plant is a Rankine-cycle plant.29. The system according to claim 25 , being configured to introduce said exhaust heat into at least one heat exchanger.30. The system according to claim 29 , being further configured to utilize residual heat exiting said at least one heat ...

Подробнее
Номер записи: 58
12-03-2015 дата публикации

Systems and methods for power peaking with energy storage

Номер: US20150069758A1
Автор: Chal S. Davidson, Steven A. Wright
Принадлежит: SUPERCRITICAL TECHNOLOGIES Inc

Disclosed illustrative embodiments include systems and methods for power peaking with energy storage. In an illustrative, non-limiting embodiment, a power plant includes a thermodynamic piping circuit having a working fluid contained therein, and the working fluid has a flow direction and a flow rate. Power plant components are interposed in the thermodynamic piping circuit. The power plant components include a compressor system, a recuperator system, a heat source, a turbine system, a heat rejection system, and a thermal energy transfer system. A valving system is operable to selectively couple the heat rejection system, the thermal energy storage system, and the compressor system in thermohydraulic communication with the working fluid maintaining the flow direction and the flow rate to implement a thermodynamic cycle chosen from a Brayton cycle, a combination Brayton cycle/refrigeration cycle, and a Rankine cycle.

Подробнее
Номер записи: 59
10-03-2016 дата публикации

Power plant system having a thermochemical accumulator

Номер: US20160069218A1
Автор: Alexander Tremel, Uwe Lenk
Принадлежит: SIEMENS AG

A power plant system has a heat-generating unit for providing thermal energy; a water-steam circuit, which is connected to the heat-generating unit for heat transfer; an electricity-generating device, which can be energised by the thermal energy conducted in the water-steam circuit to generate electricity; and a thermochemical accumulator, which is connected to the water-steam circuit. The thermochemical accumulator is connected to an exhaust gas line of the heat-generating unit for heat transfer, and the thermochemical accumulator has two tanks, which are connected to each other for fluid flow. A thermochemical storage material is arranged in a first tank, and the first tank is supplied with heat by thermally conditioned exhaust gas of the heat-generating unit, and the second tank is connected for heat flow to a heat exchanger, by which the second tank is supplied with low-temperature heat at a temperature level of at most 150° C.

Подробнее
Номер записи: 60
09-03-2017 дата публикации

DISTRIBUTOR VALVE ASSEMBLY

Номер: US20170068254A1
Автор: Ferraro Giovanni, Hero Alexander, Schlingmeier Daniel, Stoll Manuel
Принадлежит:

Distributor valve assembly () comprising a proportioning valve () and a pressure compensator (). A control piston () adjusts the flow cross sections through a first compensator throttle () and through a second compensator throttle () by longitudinal movement thereof. 1110301013141510141513303231343531323435341435153034363635373730323636aaab. A distributor valve assembly () comprising a proportioning valve () and a pressure compensator () , said proportioning valve () having an inlet channel () , a first outlet channel () and a second outlet channel () , wherein the proportioning valve () is configured to divide , between the first outlet channel () and the second outlet channel () , a mass flow of a working medium flowing through the inlet channel () , wherein the pressure compensator () comprises a control piston () that is disposed in a housing () in a longitudinally movable manner , wherein a first control chamber () and a second control chamber () are formed in the housing () , wherein the control piston () delimits the first control chamber () and the second control chamber () , wherein the first control chamber () is hydraulically connected to the first outlet channel () and the second control chamber () to the second outlet channel () on an inlet side of the pressure compensator () , wherein the first control chamber () is configured to be hydraulically connected to a first compensator outlet () via a first compensator throttle () and the second control chamber () to a second compensator outlet () via a second compensator throttle () on an outlet side of the pressure compensator () , and wherein the control piston () adjusts flow cross sections through the first compensator throttle () and through the second compensator throttle () by means of the longitudinal movement thereof.21325152. The distributor valve assembly () according to claim 1 , characterized in that the control piston () is preloaded between a first preload spring () and a second preload spring ...

Подробнее
Номер записи: 61
12-06-2014 дата публикации

DISTRIBUTED COMPRESSED AIR ENERGY STORAGE SYSTEM AND METHOD

Номер: US20140159371A1
Автор: Hugo Ronald J., Keith David W., Mohamadabadi Hossein Safaei
Принадлежит:

A distributed compressed air storage system and method is described. A compression facility is configured to compress air and provides the compressed air to a pipeline. The pipeline is coupled to the compression facility and is configured to transport compressed air from the compression facility to a compressed air storage facility that is remote from the compression facility. A heat recovery unit is coupled to the compression facility and is configured to recover heat produced by compressing air in the compression facility. The compressed air storage facility is configured to store compressed air received from the pipeline and is located remote from the compression facility. An expansion facility is configured to receive compressed air from the compressed air storage facility and expand the compressed air to generate electricity. 1. A distributed compressed air storage system comprising:a compression facility that is configured to compress air;a pipeline that is coupled to the compression facility and is configured to transport compressed air from the compression facility to a compressed air storage facility that is remote from the compression facility;a heat recovery unit that is coupled to the compression facility and is configured to recover heat produced by compressing air in the compression facility;the compressed air storage facility that is configured to store compressed air received from the pipeline and is located remote from the compression facility; andan expansion facility that is configured to receive compressed air from the compressed air storage facility and expand the compressed air to generate electricity.2. The system of claim 1 , wherein the expansion facility is located at a same location as the compression facility.3. The system of claim 1 , wherein the expansion facility is located at a same location as the compressed air storage facility.4. The system of claim 1 , wherein the expansion facility is located at a different location than the ...

Подробнее
Номер записи: 62
22-03-2018 дата публикации

Method and System of Efficiency Evaluation of RCAES System

Номер: US20180080346A1
Автор: Chen Laijun, LIU BIN, Liu Feng, MEI Shengwei, Wang Cheng, Wang Zhaojian
Принадлежит:

An efficiency evaluation method of an RCAES system is disclosed, and the method includes calculating electric energy charged by an electric power system in a compression process, calculating electric energy discharged to the electric power system in an expansion process, and calculating a ratio of the electric energy discharged in the expansion process to that charged in the compression process, and taking the ratio as an efficiency of the whole RCAES system; wherein gas in operation is ideal gas, air mass flow rates in the compression and expansion processes are known and constant in operation, an isothermal model is adopted for the CASV of which the temperature is the same with ambient circumstances, and the temperature and pressure of compressed air after throttling become constant. A corresponding system is also disclosed. 1. An efficiency evaluation method of an RCAES (Regenerative Compressed Air Energy Storage) system which comprises parts of compression , thermal energy storage , compressed air storage vessel (CASV) and expansion; the method comprising:calculating electric energy charged by an electric power system in a compression process;calculating electric energy discharged to the electric power system in an expansion process; andcalculating a ratio of the electric energy discharged in the expansion process to that charged in the compression process, and taking the ratio as an efficiency of the whole RCAES system;wherein gas in operation is ideal gas, air mass flow rates in the compression and expansion processes are known and constant in operation, an isothermal model is adopted for the CASV of which the temperature is the same with ambient circumstances, and the temperature and pressure of compressed air after throttling become constant.2. The method of claim 1 , wherein a process of calculating the electric energy charged by the electric power system in the compression process comprises:calculating compression work of stages except the last stage of a ...

Подробнее
Номер записи: 63
22-03-2018 дата публикации

THERMAL ENERGY STORAGE PLANT

Номер: US20180080721A1
Автор: BARMEIER TILL ANDREAS, SEIDEL VOLKER
Принадлежит:

A thermal energy storage plant is provided including a charging circuit and a discharging circuit, the charging circuit including: a first fluid transporting machine for generating a flow of a working fluid in the charging circuit, a heating device for transferring heat to the working fluid, a main heat accumulator for storing the thermal energy of the working fluid, the discharging circuit including the main heat accumulator, a heat exchanger included in a thermal cycle for transforming the thermal energy stored into mechanical power, the thermal energy storage plant further comprising a secondary heat accumulator including a first end connected to the charging circuit, downstream the heating device, a second end connected to the discharging circuit, upstream the heat exchanger. 2. The thermal energy storage plant according to claim 1 , wherein the secondary heat accumulator has a lower thermal capacity than the main heat accumulator.3. The thermal energy storage plant according to claim 1 , further comprising at least a valve between the secondary heat accumulator and the charging circuit.4. The thermal energy storage plant according to claim 1 , further comprising at least a first and a second discharging valves between the secondary heat accumulator and claim 1 , respectively claim 1 , the main heat accumulator and the heat exchanger.5. The thermal energy storage plant according to claim 1 , further comprising a second fluid transporting machine upstream or downstream the secondary heat accumulator.6. The thermal energy storage plant according to claim 1 , wherein the heating device is powered from a renewable energy source.7. The thermal energy storage plant according to claim 1 , wherein the secondary heat accumulator has 10% to 40% of the thermal capacity of the main heat accumulator.8. A method for operating the thermal energy storage plant according to claim 1 , the method comprising the steps of:heating the working fluid,generating a flow of the working ...

Подробнее
Номер записи: 64
23-03-2017 дата публикации

Method for recovering heat from internal combustion engines and for converting the recovered heat into mechanical energy

Номер: US20170081982A1
Автор: Kollmeier Hans-Peter, Kraljevic Ivica, Rohrpasser Christian, Striebich Helmut
Принадлежит:

A method and a device for recovering heat from an engine and for converting the heat into mechanical energy using an expansion machine. A heat accumulator fluid is guided in a primary circuit by means of a primary pump and is firstly heated by the waste heat of the combustion engine by means of a heat exchanger, is transferred into a heat accumulator and recirculated to the first heat exchanger, and, secondly, the heat accumulator fluid is guided in a secondary circuit by said heat accumulator fluid being extracted in the vapor state from the heat accumulator and being supplied to the expansion machine, and being condensed by means of a condenser downstream thereof and being recirculated into the heat accumulator by means of a secondary pump. The primary circuit of the heat accumulator fluid is connected to the secondary circuit exclusively via the heat accumulator. 128to . (canceled)29. A method for recovering heat from a combustion engine or from a motor vehicle combustion engine , and for converting the recovered heat into mechanical energy , the method comprising the steps of:a) guiding, using at least one primary pump, a heat accumulator fluid in a primary circuit in which the heat accumulator fluid is heated with waste heat of the combustion engine using at least one first heat exchanger, transferred into a heat accumulator and recirculated to the at least one first heat exchanger; andb) guiding the heat accumulator fluid in a secondary circuit in which the heat accumulator fluid is extracted in a vapor state from the heat accumulator, supplied to an expansion machine, condensed by means of a condenser disposed downstream of the expansion machine and recirculated into the heat accumulator using at least one secondary pump, wherein the primary circuit of the heat accumulator fluid is connected to the secondary circuit exclusively via the heat accumulator and is otherwise separated from the secondary circuit.30. The method of claim 29 , wherein the heat ...

Подробнее
Номер записи: 65
02-04-2015 дата публикации

BACK-UP BOILER SYSTEM FOR A SOLAR THERMAL POWER PLANT BASED ON MOLTEN SALT TECHNOLOGY, A SOLAR THERMAL POWER PLANT AND A METHOD FOR OPERATING A SOLAR THERMAL POWER PLANT

Номер: US20150089944A1
Автор: Barsi Adriano, Capoferri Daniela, Fabrizi Fabrizio, Gaggioli Walter, Giaconia Alberto, Iaquaniello Gaetano, Rinaldi Luca
Принадлежит:

A back-up boiler system for a solar thermal power plant () for transferring solar energy into electricity, said back-up boiler system comprising a combustion chamber () and a convection section () in fluid connection with said combustion chamber (), wherein in the convection section () at least a first heat exchanger () is provided for heating a molten salts mixture of the solar thermal power plant and a second heat exchanger () for pre-heating boiler feed water of the solar thermal power plant, wherein the back-up boiler system () is configured to allow selection between only providing heat to the first heat exchanger (), only providing heat to the second heat exchanger () and providing heat to both heat exchangers (), preferably dependent on availability of solar radiation and/or dependent on demand of power generation. The invention also relates to a solar thermal power plant () for transferring solar energy into electricity and a method for operating a solar thermal power plant. 12017080708092902592909092. A back-up boiler system for a solar thermal power plant () for transferring solar energy into electricity , said back-up boiler system comprising a combustion chamber () and a convection section () in fluid connection with said combustion chamber () , wherein in the convection section () at least a first heat exchanger () is provided for heating a molten salts mixture of the solar thermal power plant and a second heat exchanger () for pre-heating boiler feed water of the solar thermal power plant , wherein the back-up boiler system () is configured to allow selection between only providing heat to the first heat exchanger () , only providing heat to the second heat exchanger () and providing heat to both heat exchangers ( , ) , dependent on availability of solar radiation and/or dependent on demand of power generation.2922903. A back-up boiler system according to claim 1 , wherein the first heat exchanger () is operatively coupled to a heat transfer fluid ...

Подробнее
Номер записи: 66
12-03-2020 дата публикации

THERMODYNAMIC SYSTEM FOR STORING/PRODUCING ELECTRICAL ENERGY

Номер: US20200083782A1
Автор: Ouvry Patrick
Принадлежит: BOREALES ENERGY

A system for producing and storing electrical energy includes a thermally insulated chamber containing a first circuitry in which circulates a first working fluid, a hot source, a cold source, wherein the hot source is composed of a pure water ice slurry at 0° C., the cold source is composed of an ice slurry with a temperature lower than or equal to −40° C. and the system for producing/storing electrical energy further includes a second circuitry of working fluid for circulating a second working fluid between the hot source and a thermostat, wherein the second working fluid is circulated between said thermostat and the hot source by an auxiliary expansion valve and an auxiliary compressor. 2. The system according to claim 1 , wherein the pump is a reversible pump claim 1 , and wherein the turbine is a reversible turbine.3. The system according to claim 1 , further comprising a low temperature regenerator arranged to enable a heat exchange between the third and fourth legs connected to the cold source.4. The system according to claim 1 , wherein a high temperature regenerator is arranged between portions of the fourth leg entering and exiting the turbine.5. The system according to claim 1 , wherein a superheating member providing an external heat to the first working fluid is provided on the first fluid circuitry immediately upstream of an input of the turbine.6. The system according to claim 1 , wherein a compressor assembly is provided on a fifth circuitry leg in parallel to the fourth leg.7. The system according to claim 1 , wherein an expansion valve assembly is provided on a sixth circuitry leg in parallel to the third leg.8. The system according to claim 1 , wherein:a compressor assembly is provided on a fifth circuitry leg in parallel to the fourth leg;an expansion valve assembly is provided on a sixth circuitry leg in parallel to the third leg; and,the fifth and sixth legs are directly connected to the first circuitry.9. The system according to claim 1 , ...

Подробнее
Номер записи: 67
30-03-2017 дата публикации

ORC SYSTEM POST ENGINE SHUTDOWN PRESSURE MANAGEMENT

Номер: US20170089222A1
Автор: FORTINI Matthew James, JR. Bradley Karl, Wright
Принадлежит: EATON CORPORATION

The present disclosure relates to a Rankine cycle system including a Rankine cycle circuit in which working fluid is cycled through a condensing zone, a heating zone, and a mechanical energy extraction zone. The system also includes a hydraulic accumulator for storing pressurized working fluid from the Rankine cycle circuit when a pressure of the working fluid within the Rankine cycle circuit is above a first pressure level, and for releasing pressurized working fluid to the Rankine cycle circuit when the working fluid within the Rankine cycle circuit is below a second pressure level. 1. A post engine shutdown management system for a Rankine cycle system comprising:a prime mover;a Rankine cycle circuit in which working fluid is cycled through a condensing zone, a heating zone, and a mechanical energy extraction zone the Rankine cycle circuit being configured to capture waste heat generated by the prime mover;a hydraulic accumulator for storing pressurized working fluid from the Rankine cycle circuit when a pressure of the working fluid within the Rankine cycle circuit is above a first predetermined condition, and for releasing pressurized working fluid to the Rankine cycle circuit when the power plant is shut down and when the working fluid within the Rankine cycle circuit is below a second second predetermined condition to minimize or prevent a vacuum pressure condition from developing in the Rankine cycle circuit.2. The post engine shutdown management system for a Rankine cycle system of claim 1 , wherein the first predetermined condition is a first working fluid pressure and the second predetermined condition is a second working fluid pressure less than the first working fluid pressure.3. The post engine shutdown management system for a Rankine cycle system of claim 1 , further comprising a hydraulic pump for moving the working fluid through the Rankine cycle circuit claim 1 , the hydraulic pump having a low pressure side in fluid communication with the ...

Подробнее
Номер записи: 68
07-04-2016 дата публикации

ENERGY STORAGE SYSTEM FOR INCREASING THE FLEXIBILITY OF POWER PLANTS

Номер: US20160097571A1
Автор: Lenk Uwe, REISSNER Florian, Schäfer Jochen, TREMEL Alexander
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

Provision of electricity to an electrical grid is controlled such that the electricity supply from the power plant is reduced to the current electric power demand by charging a thermal energy store(s). As a result, the provision of electricity by renewable energy sources to the electrical grid can be given precedence. The power plant can be connected to a heat pump and/or a refrigeration unit by the thermal energy store(s). The thermal energy store(s) can be used for district heating/cooling networks. 114-. (canceled)15. A system , comprising:a power plant including a condenser;at least one thermal energy store, including a first thermal store thermally coupled to the condenser of the power plant; andat least one energy conversion device configured to load the at least one thermal energy store during a period of excess power supply.16. The system as claimed in claim 15 , further comprising an adjusting device adjusting provision of power to a power grid claim 15 , configured to reduce the power supply from the power plant by charging the thermal energy store to the power demand that applies during a period of time and prioritize power from renewable sources of energy to the power grid.17. The system as claimed in claim 15 , wherein the power plant operates most efficiently under constant full-load operation.1815. The system as claimed in claim 15 ,wherein the at least one thermal energy store includes a heat store and the at least one energy conversion device includes a heat pump, andwherein the system discharges the heat store via a district heating grid.1915. The system as claimed in claim 15 ,wherein the at least one thermal energy store includes a cold store and the at least one energy conversion device includes a refrigerating machine, andwherein the system discharges the cold store via a district cooling grid.20. The system as claimed in claim 15 ,wherein the at least one thermal energy store includes at least one of a heat store a cold store,wherein the at ...

Подробнее
Номер записи: 69
07-04-2016 дата публикации

HEAT ACCUMULATOR AND METHOD FOR OPERATING A HEAT ACCUMULATOR

Номер: US20160097603A1
Автор: ZWINKELS Andrew
Принадлежит: LUMENION AG

A heat accumulator having a housing to receive a heat storage medium, a heat storage medium received in the housing, and a heat exchanger, in which a heat carrier fluid can be transported and which is arranged so that heat can be transferred from the heat storage medium to the heat carrier fluid. The heat accumulator comprises an electrical heating means which is configured to convert electrical energy into heat energy. The electrical heating means is arranged so that it heats the heat storage medium during operation, wherein the heat storage medium heated by the electrical heating means is a metal. In addition a corresponding method is disclosed. 1. A heat accumulator comprisinga housing to receive a heat storage medium,a heat storage medium received in the housing anda heat exchanger, in which a heat carrier fluid can be transported and which is arranged so that heat can be transferred from the heat storage medium to the heat carrier fluid,whereinan electrical heating means is provided which is configured to convert electrical energy into heat energy,the electrical heating means is arranged so that it heats the heat storage medium during operation, andthe heat storage medium heated by the electrical heating means is a metal.2. The heat accumulator as defined in claim 1 ,whereinthe heat storage medium is aluminium.3. The heat accumulator as defined in claim 1 ,whereinthe electrical heating means is configured to heat the heat storage medium to above its melting point.4. The heat accumulator as defined in claim 1 ,whereinthe electrical heating means is arranged so that it emits heat energy in an upper region within the housing to the heat storage medium.5. The heat accumulator as defined in claim 1 ,whereinthe housing has receiving pipes for the electrical heating means, wherein the receiving pipes are arranged so that they project into the housing and are surrounded there by the heat storage medium, and the receiving pipes are accessible from an environment of the ...

Подробнее
Номер записи: 70
05-04-2018 дата публикации

Fast Frequency Response Systems with Thermal Storage for Combined Cycle Power Plants

Номер: US20180094546A1
Автор: GUT Jean-Marie, Kirecci Aysegul, MULLER Peter-Paul
Принадлежит:

This application provides a fast frequency response system for use with combined cycle power plants. Example systems may include a buffer vessel configured to store steam, a heat recovery steam generator configured to output a high pressure steam flow and a hot reheat steam flow, and a steam turbine configured to receive the high pressure steam flow and/or a reheat pressure steam flow. The buffer vessel may be configured to receive a portion of the high pressure steam flow and discharge steam. 1. A fast frequency response system for use with a power plant , comprising:a buffer vessel configured to store steam;a heat recovery steam generator configured to output a high pressure steam flow; anda steam turbine configured to receive the high pressure steam flow;wherein the buffer vessel is configured to receive a portion of the high pressure steam flow and discharge steam.2. The fast frequency response system of claim 1 , further comprising an intermediate pressure turbine configured to receive a hot reheat steam flow from the heat recovery steam generator.3. The fast frequency response system of claim 2 , wherein the intermediate pressure turbine comprises an intermediate/low pressure turbine that is mechanically coupled to the steam turbine.4. The fast frequency response system of claim 1 , further comprising:a warm keeping line configured to maintain a pressure of the steam stored in the buffer vessel.5. The fast frequency response system of claim 4 , wherein the warm keeping line is in communication with the buffer vessel and the high pressure steam flow.6. The fast frequency response system of claim 1 , wherein the buffer vessel is configured to discharge steam into a hot reheat steam flow from the heat recovery steam generator.7. The fast frequency response system of claim 1 , further comprising:a fluid level regulation device configured to regulate a fluid level of condensate in the buffer vessel.8. The fast frequency response system of claim 1 , further ...

Подробнее
Номер записи: 71
13-04-2017 дата публикации

HEATING SYSTEMS FOR ROTOR IN-SITU IN TURBOMACHINES

Номер: US20170101897A1
Автор: FRUTSCHY Kristopher John, Kudlacik Edward Leo, Sykes Carey Lorne, Welch David Ernest
Принадлежит:

Heating systems for a rotor in-situ in a turbomachine are provided. In contrast to conventional systems that merely heat from an external turbine casing, embodiments of the disclosure heat the rotor. In one embodiment, a heating system includes a heating element to heat a portion of an exterior surface of the rotor. In another embodiment, the heating system may include a heating element(s) at least partially positioned within the rotor, and the rotor including the heating system. Each embodiment may include a controller to control operation of the heating element(s). 1. A heating system for a rotor in-situ in a casing of a turbomachine , the heating system comprising:a heating element for heating at least a portion of the rotor in-situ in the casing of the turbomachine.2. The heating system of claim 1 , wherein the heating element is configured to heat at least a portion of an exterior surface of the rotor.3. The heating system of claim 2 , further comprising a temperature sensor configured to sense a temperature of the at least a portion of the exterior surface of the rotor and a controller controlling operation of the heating element based on the sensed temperature.4. The heating system of claim 2 , wherein the heating element includes an induction heating coil positioned adjacent the at least a portion of the exterior surface of the rotor.5. The heating system of claim 2 , further comprising a susceptor member surrounding the at least a portion of the exterior surface of the rotor claim 2 , the susceptor member having the heating element therein.6. The heating system of claim 5 , wherein the heating element includes at least one of: a resistance heater and an inductance heater.7. The heating system of claim 5 , further comprising a temperature sensor configured to sense a temperature of the rotor and a controller controlling operation of the heating element based on the sensed temperature.8. The heating system of claim 7 , wherein the temperature sensor is in or ...

Подробнее
Номер записи: 72
02-06-2022 дата публикации

ENERGY STORAGE SYSTEM AND APPLICATIONS

Номер: US20220170386A1
Автор: "ODonnell John Setel", Ferhani Yusef Desjardins, Jonemann Matthieu, Keller Jeremy Quentin, Ratz Robert, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system. 1. A system for thermal energy storage and delivery , comprising:{'b': '4100', 'a thermal storage assemblage () including a plurality of thermal storage blocks, wherein at least some of the thermal storage blocks include multiple radiation cavities and multiple fluid flow slots, wherein some of the radiation cavities and some of the fluid flow slots are configured to define fluid pathways through the thermal storage blocks;'}{'b': '3607', 'a plurality of heater elements () positioned within the thermal storage assemblage and adjacent to at least some of the radiation cavities, wherein each of the plurality of heater elements is configured to heat at least one of the thermal storage blocks via energy radiated into multiple ones of the radiation cavities and onto surfaces that bound the respective radiation cavities; and'}{'b': 213', '4223, 'a fluid movement system ...

Подробнее
Номер записи: 73
02-06-2022 дата публикации

Thermal Energy Storage System with System for Deep Discharge of Thermal Storage Blocks

Номер: US20220170387A1
Автор: "ODonnell John Setel", Ferhani Yusef Desjardins, Jonemann Matthieu, Keller Jeremy Quentin, Ratz Robert, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system. 1. A thermal energy storage system configured to produce an output fluid flow , the thermal energy storage system comprising:a first assemblage of first thermal storage blocks and a second assemblage of second thermal storage blocks, the first and second thermal storage blocks configured to store thermal energy; and direct fluid flows during a first discharge period such that the first assemblage, but not the second assemblage, is discharged to within a deep-discharge temperature region; and', 'direct fluid flows during a second discharge period such that the second assemblage, but not the first assemblage, is discharged to within the deep-discharge temperature region., 'a control system configured to2. The thermal energy storage system of claim 1 , wherein the control system is configured claim 1 , during successive discharge periods claim 1 , to alternate between ...

Подробнее
Номер записи: 74
02-06-2022 дата публикации

Thermal Energy Storage System With Heat Discharge System to Prevent Thermal Runaway

Номер: US20220170388A1
Автор: "ODonnell John Setel", Ferhani Yusef Desjardins, Jonemann Matthieu, Keller Jeremy Quentin, Ratz Robert, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system. 1. A thermal energy storage system , comprising:a first assemblage of first thermal storage blocks and a second assemblage of second thermal storage blocks, the first and second thermal storage blocks configured to store thermal energy; and direct fluid flows to the first and second assemblages to produce an output fluid flow;', 'during a first discharge period, perform a first discharge operation by discharging the first assemblage sufficiently to prevent thermal runaway while discharging the second assemblage to at or above a delivery temperature of the output fluid flow; and', 'during a second, successive discharge period, perform a second discharge operation by discharging the second assemblage sufficiently to prevent thermal runaway while discharging the first assemblage to at or above the delivery temperature., 'a control system configured to2. The thermal ...

Подробнее
Номер записи: 75
21-04-2016 дата публикации

Concrete and tube hot thermal exchange and energy store (txes) including temperature gradient control techniques

Номер: US20160108761A1
Автор: Alex Lau, Brendan R. Geels, Jennifer Fon Tuey, Karl Ginter, Miles L. Abarr, Scott Raymond Frazier
Принадлежит: Bright Energy Storage Technologies LLP

A thermal heat capture, storage, and exchange arrangement, includes at least one thermal exchange and storage (TXES) array, with each TXES array including one or more TXES elements that receive a fluid flow of a heat source fluid and a working fluid, with the TXES elements providing for a transfer of thermal energy between the heat source fluid and the TXES elements. A manifold system provides the working fluid to an input of the TXES elements and receives the working fluid from an output of the TXES elements. At least one heat engine operable with the TXES array extracts heat from the TXES array and converts it to mechanical energy, with the heat engine being selectively connected to the manifold system of a TXES array to pass the working fluid through the TXES elements, such that a transfer of thermal energy between the working fluid and the TXES elements occurs.

Подробнее
Номер записи: 76
19-04-2018 дата публикации

THERMAL ENERGY STORAGE PLANT

Номер: US20180106165A1
Автор: BARMEIER TILL ANDREAS
Принадлежит:

Provided is a thermal energy storage plant including a charging circuit where a first working fluid is circulated, the charging circuit includes a first fluid transporting machine for generating a flow of the first working fluid in charging circuit, a heating device electrically powered for transferring heat to the first working fluid, a heat accumulator for storing the thermal energy of the first working fluid, the heat accumulator including a hot end for receiving the first working fluid at a first temperature and a cold end for letting the first working fluid exit the heat accumulator at a second temperature lower than the first temperature, the heat accumulator includes a plurality of heat storage units connected in series between the hot end and the cold end, which may be separated by valves. 1. A thermal energy storage plant comprising: a first fluid transporting machine for generating a flow of the first working fluid in the charging circuit,', 'a heating device for transferring heat to the first working fluid,', 'a heat accumulator for storing a thermal energy of the first working fluid, the heat accumulator including a hot end for receiving the first working fluid at a first temperature and a cold end for letting the first working fluid exit the heat accumulator at a second temperature lower than the first temperature,', 'wherein the heat accumulator comprises a plurality of heat storage units, connected in series between the hot end and the cold end., 'a charging circuit where a first working fluid is circulated, the charging circuit including2. The thermal energy storage plant according to claim 1 , wherein the heat accumulator further includes at least one valve interposed between two heat storage units of the plurality of heat storage units.3. The thermal energy storage plant according to claim 1 , further comprising a discharging circuit claim 1 , the discharging circuit including:the heat accumulator,a second fluid transporting machine for generating ...

Подробнее
Номер записи: 77
30-04-2015 дата публикации

METHOD FOR OPERATING A POWER PLANT INSTALLATION

Номер: US20150113989A1
Автор: Bauer Günter, Pieper Norbert, Thierbach Hans-Ulrich, Wechsung Michael
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

The invention relates to a method for operating a power plant, wherein in partial load operation the increase of temperature results at the outlet of the high-pressure turbine section as a consequence of a throttling by means of the intermediate pressure valve. 17.-. (canceled)8. A method for operating a power plant installation comprising a steam turbine which is subdivided into a high-pressure turbine section , an intermediate-pressure turbine section and a low-pressure turbine section , and in which a reheater unit is arranged between the high-pressure turbine section and the intermediate-pressure turbine section , the method comprising:operating the power plant installation at partial load,raising the temperature at the inlet to the reheater unit by throttling a valve arranged upstream of the inter-mediate-pressure turbine section.9. The method as claimed in claim 8 ,wherein the throttling is carried out such that the expansion in the high-pressure turbine section is reduced.10. The method as claimed in claim 8 ,wherein the throttling is chosen such that the magnitude of the temperature drop downstream of the reheater unit in the unthrottled state is substantially halved.11. The method as claimed in claim 8 ,wherein the throttling is carried out such that, in the event of a change in load, the change in temperature upstream and downstream of the reheater unit, as a consequence of the throttling, is of substantially equal magnitude.12. The method as claimed in claim 8 ,wherein the partial load operation is carried out substantially between 20% and 40% of the rated load.13. A power plant operated according to the method as claimed in .14. The power plant as claimed in claim 13 , wherein the power plant is configured as a steam power plant.15. The power plant as claimed in claim 13 , wherein the power plant is configured as a gas and steam power plant.16. The method as claimed in claim 8 ,wherein the partial load operation is carried out substantially at 25% of the ...

Подробнее
Номер записи: 78
26-04-2018 дата публикации

Energy Store, Power Plant having an Energy Store, and Method for Operating the Energy Store

Номер: US20180112930A1
Автор: Alexander Schechner, Gerhard Ihle, Luis Deroi
Принадлежит: Naturspeicher GmbH

An energy storage device for a power plant includes a heat exchanger arranged in a floating manner in a lower basin that is fillable with water via a first supply line. A second supply line supplies water from the lower basin. A third supply line is in fluid communication with the heat exchanger. A heat pump provides coolant to the heat exchanger via the third supply line such that energy is extracted via the heat exchanger while freezing of the water in the lower basin or in the form of sensible heat from the water in the lower basin, wherein the energy is passed on to a consumer for heat dissipation or for cold dissipation.

Подробнее
Номер записи: 79
17-07-2014 дата публикации

Steam turbine comprising a thrust balance piston

Номер: US20140199161A1
Автор: Christian Lenz, Dominic Schlehuber, Martina Holder, Norbert Pieper, Rudolf PÖTTER, Uwe Zander
Принадлежит: SIEMENS AG

A cooling mechanism for a steam turbine is provided, which has, in the area of the valve connection a cooling channel, into which cooling steam flows from the flow channel, the steam then being fed as cooling steam in the area of the thrust balance piston.

Подробнее
Номер записи: 80
03-05-2018 дата публикации

SYSTEM AND METHOD FOR PROVIDING SUPERCRITICAL STEAM

Номер: US20180119577A1
Автор: Jukkola Glen, LEVASSEUR ARMAND, Maidenford Timothy, Niass Tidjani, Philo Daryl, Wilhelm Bruce, Younes Mourad, ZHANG Wei
Принадлежит: General Electric Technology GmbH

A system for providing supercritical steam including a first boiler that generates steam via combusting a first fuel, and a second boiler fluidly connected to the first boiler via a conduit which heats the generated steam to supercritical steam temperatures via combusting a second fuel. A first temperature of the conduit may be below a critical corrosion temperature and a second temperature of the conduit is greater than or equal to the critical corrosion temperature. A combined carbon emission rate of the first boiler and the second boiler may be less than a combined carbon emission rate of generating and heating the steam to supercritical steam temperatures using boilers that only combust the first fuel. The first boiler may be fluidly connected to a heat exchanger that heats the generated steam to a supercritical steam temperature via a flue gas produced by a gas turbine. 1. A system for providing supercritical steam comprising:a first boiler that generates steam via combusting a first fuel;a second boiler fluidly connected to the first boiler via a conduit such that the generated steam flows from the first boiler to the second boiler which heats the generated steam to a supercritical steam temperature via combusting a second fuel that is different from the first fuel; andwherein a first temperature of the conduit is below a critical corrosion temperature at which contaminants produced by combusting the first fuel corrode the conduit and a second temperature of the conduit is greater than or equal to the critical corrosion temperature.2. The system of claim 1 , wherein the first fuel is at least one of a heavy oil residue claim 1 , a heavy fuel oil claim 1 , and a solid fuel.3. The system of claim 1 , wherein at least one of the first boiler and the second boiler is an air-fired boiler or an oxy-fired boiler.4. The system of claim 1 , wherein the second fuel is a gas or a combination of a gas blended with at least one of a liquid fuel or a solid fuel.5. The ...

Подробнее
Номер записи: 81
14-05-2015 дата публикации

METHOD FOR MODIFYING A SOLAR THERMAL POWER PLANT OPERATING ON CONVENTIONAL OIL BASED TECHNOLOGY INTO A HYBRID SOLAR THERMAL POWER PLANT AND SUCH A HYBRID SOLAR THERMAL POWER PLANT

Номер: US20150128595A1
Автор: Capoferri Daniela, Epstein Michael, Fabrizi Fabrizio, Iaquaniello Gaetano
Принадлежит:

Method for modifying a solar thermal power plant operating on conventional oil based technology into a hybrid solar thermal power plant, wherein the method comprises: 1. Method for modifying a solar thermal power plant operating on conventional oil based technology into a hybrid solar thermal power plant , wherein the method comprises:providing an oil based solar thermal power plant comprising a solar collection system with at least one radiation absorber tube containing a heat transfer oil to be heated by means of the solar collection system,providing an additional solar thermal power plant operating on a molten salts mixture, wherein the molten salts solar thermal power plant comprises a solar collection system to heat a molten salts mixturecoupling of the molten salts solar thermal power plant to the oil based solar thermal power plant such that the hybrid solar thermal power plant is configured to heat medium temperature steam that is generated by the oil based solar power plant by means of the molten salts mixture thereby producing high temperature steam and subsequently supplying it to a steam turbine to generate electricity.2. Method according to claim 1 , wherein the hybrid solar thermal power plant is configured for heating the steam to at least 450° C. claim 1 , preferably to at least 500° C. claim 1 , for example between 500° C. and 1000° C.3. Method according to claim 1 , wherein the heated steam may be reheated or superheated at a pressure ranging between approximately 50-120 bar.4. Method according to claim 1 , wherein the method further comprises adding a storage facility to store the molten salts mixture and heat the medium temperature steam coming from the oil based solar power plant and/or to heat boiler feed water to generate and to heat steam by means of the stored hot molten salts mixture.5. Method according to claim 1 , wherein the method comprises providing a back-up boiler system for heating the molten salts mixture and/or preheating boiler ...

Подробнее
Номер записи: 82
25-08-2022 дата публикации

Thermal Energy Storage System with Alternating Discharge Operation

Номер: US20220268179A1
Автор: "ODonnell John Setel", Ferhani Yusef Desjardins, Jonemann Matthieu, Keller Jeremy Quentin, Ratz Robert, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system. 1. A thermal energy storage system configured to produce an output fluid flow , the thermal energy storage system comprising:a first assemblage of first thermal storage blocks and a second assemblage of second thermal storage blocks, the first and second thermal storage blocks configured to store thermal energy; and direct fluid flows during a first discharge period to perform a first discharge operation in which the first assemblage, but not the second assemblage, is discharged below a delivery temperature of the output fluid flow; and', 'direct fluid flows during a second, successive discharge period to perform a second discharge operation in which the second assemblage, but not the first assemblage, is discharged below the delivery temperature., 'a control system configured to2. The thermal energy storage system of claim 1 , wherein the control system is ...

Подробнее
Номер записи: 83
25-08-2022 дата публикации

Thermal Energy Storage System With Forecast Control Of Operating Parameters

Номер: US20220268181A1
Автор: "ODonnell John Setel", Ferhani Yusef Desjardins, Jonemann Matthieu, Keller Jeremy Quentin, Ratz Robert, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system. 1. A thermal energy storage system , comprising:a storage medium configured to store thermal energy obtained using input electrical energy from an energy source;a heating element configured to thermally charge the storage medium by converting at least a portion of the input electrical energy to thermal energy; [ 'receive forecast information regarding availability of the energy source, and', 'a control system configured to'}, 'based on the forecast information, adjust an operating parameter of the thermal energy storage system., 'a fluid movement device configured to move fluid through the storage medium to heat the fluid and provide the heated fluid to a load system; and'}2. The thermal energy storage system of claim 1 , wherein the control system is configured to control a heated fluid discharge rate of the stored thermal energy during a first period of abundant ...

Подробнее
Номер записи: 84
25-04-2019 дата публикации

STEAM TURBINE PIPE AND PIPE

Номер: US20190120436A1
Автор: ASAKURA Daisuke, ENDO Toshihiko, KANBE Koji, Nakamura Yuichi, Nishi Hiroyuki, Ohfuji Tomoo, OOISHI Tsutomu, SHIOYAMA Tsutomu, Shiraishi Hiroki, Takahashi Makoto, Tao Hiroyuki, YAMANAKA Tetsuya
Принадлежит:

A steam turbine pipe of an embodiment includes: an upper half side main steam pipe that leads steam to a steam turbine; an upper half side main steam control valve that intervenes in the upper half side main steam pipe ; and a post-valve drain pipe that is connected to the upper half side main steam control valve and leads drain to an outside. The steam turbine pipe further includes: a shut-off valve that intervenes in the post-valve drain pipe ; and a branching pipe that makes the post-valve drain pipe on the side closer to the upper half side main steam control valve than is the shut-off valve communicate with the upper half side main steam pipe between the upper half side main steam control valve and a high-pressure turbine 15-. (canceled)6. A steam turbine pipe in a steam turbine facility , comprising:an upper half side main steam pipe that leads steam from a boiler to an upper half side of a steam turbine;a lower half side main steam pipe that leads steam from the boiler to a lower half side of the steam turbine;an upper half side main steam control valve that intervenes in the upper half side main steam pipe and regulates a flow rate of the steam to be led to the upper half side of the steam turbine;a lower half side main steam control valve that intervenes in the lower half side main steam pipe and regulates a flow rate of the steam to be led to the lower half side of the steam turbine; andan upper half side drain pipe that is connected to the upper half side main steam control valve and has an open end.7. The steam turbine pipe according to claim 6 , further comprising:a lower half side drain pipe that is connected to the lower half side main steam control valve and leads drain to an outside; anda shut-off valve that intervenes in the lower half side drain pipe,wherein the open end of the upper half side drain pipe is connected to the lower half side main steam pipe between the lower half side main steam control valve and the steam turbine.8. The steam ...

Подробнее
Номер записи: 85
25-04-2019 дата публикации

STEAM TURBINE PIPE AND PIPE

Номер: US20190120437A1
Автор: ASAKURA Daisuke, ENDO Toshihiko, KANBE Koji, Nakamura Yuichi, Nishi Hiroyuki, Ohfuji Tomoo, OOISHI Tsutomu, SHIOYAMA Tsutomu, Shiraishi Hiroki, Takahashi Makoto, Tao Hiroyuki, YAMANAKA Tetsuya
Принадлежит:

A steam turbine pipe of an embodiment includes: an upper half side main steam pipe that leads steam to a steam turbine; an upper half side main steam control valve that intervenes in the upper half side main steam pipe ; and a post-valve drain pipe that is connected to the upper half side main steam control valve and leads drain to an outside. The steam turbine pipe further includes: a shut-off valve that intervenes in the post-valve drain pipe ; and a branching pipe that makes the post-valve drain pipe on the side closer to the upper half side main steam control valve than is the shut-off valve communicate with the upper half side main steam pipe between the upper half side main steam control valve and a high-pressure turbine 111-. (canceled)12. A steam turbine pipe in a steam turbine facility , comprising:a steam path that leads steam from a boiler to a steam turbine;a branching pipe that branches off from the steam path;a shut-off valve that intervenes in the branching pipe; andan expanded portion that is provided in the branching pipe between the steam path and the shut-off valve and has a space made by expanding a cross section of the branching pipe.13. A steam turbine pipe in a steam turbine facility , comprising:a steam path that leads steam from a boiler to a steam turbine;a branching pipe that branches off from the steam path;a shut-off valve that intervenes in the branching pipe; anda damping portion that is provided in the branching pipe between the steam path and the shut-off valve and damps resonant vibration.14. The steam turbine pipe according to claim 12 , whereinthe steam path is a main steam pipe that leads steam from the boiler to the steam turbine and has a main steam control valve intervening therein that regulates a flow rate of the steam to be led to the steam turbine,a branching portion of the branching pipe is a steam flow passage in the main steam control valve, andthe branching pipe is a drain pipe that leads drain to an outside.15. The ...

Подробнее
Номер записи: 86
31-07-2014 дата публикации

METHOD AND APPARATUS OF PRODUCING AND UTILIZING THERMAL ENERGY IN A COMBINED HEAT AND POWER PLANT

Номер: US20140208752A1
Автор: Palanisamy Krishna Moorthy
Принадлежит:

Method and apparatus for operating a combined heat and power system with greater flexibility, reliability, control and stability, for providing operational flexibility and energy efficiency in operating a combined heat and power plant which includes a backpressure steam engine that expands a high temperature heat source of a thermodynamic fluid to generate mechanical power and discharge its spent heat for a beneficial use comprises a vessel subsystem for the spent heat, said vessel subsystem including: at least one main indirect heat exchange device or vessel () in heat exchange communication between its primary space () and its secondary space (). The present invention also discloses the use of a method and apparatus to operate a combined heat and power system. 1. A method of producing and utilizing thermal energy in a combined heat and power plant , said method comprising:{'b': '120', 'a. generating a flow of steam in a steam generator () from a flow of feed water;'}{'b': '120', 'b. directing the generated flow of steam from the steam generator () into a steam engine to produce mechanical power and discharging a flow of exhaust steam from the steam engine;'}c. directing either the flow of exhaust steam from the steam engine or a flow comprising a combination of the exhaust steam from the steam engine and supplementary steam from the steam generator as process steam to provide thermal energy fix a downstream process;{'b': 7', '10', '11, 'd. in at least a vessel (), wherein the vessel includes a primary space () and a secondary space () in heat communication with but with fluid separation from each other, said secondary space containing a quantity of a secondary fluid in liquid phaseintroducing the flow of process steam of step (c) into the primary space as primary steam to vaporize a portion of the secondary fluid;simultaneously introducing the secondary fluid in liquid phase as make-up fluid into the secondary space resulting in precipitation of the primary steam ...

Подробнее
Номер записи: 87
03-06-2021 дата публикации

VARIABLE PRESSURE INVENTORY CONTROL OF CLOSED CYCLE SYSTEM WITH A HIGH PRESSURE TANK AND AN INTERMEDIATE PRESSURE TANK

Номер: US20210164404A1
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:operating a closed cycle system in a discharge mode, wherein the closed cycle system is operable in a charge mode and the discharge mode;in the 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, wherein the closed cycle system comprises (i) a first fluid connection between the high pressure leg and a high pressure tank and (ii) a second fluid connection between the high pressure leg and an intermediate pressure tank;determining an operating condition of the closed cycle system;defining a first threshold pressure value based on the determination of the operating condition of the closed cycle system;removing a first quantity of working fluid from the closed cycle fluid path by opening the first fluid connection, such that a first pressure of the working fluid in the high pressure leg decreases and a second pressure of the working fluid in the high pressure tank increases;closing the first fluid connection when a third pressure of the working fluid reaches the first threshold pressure value; andremoving a second quantity of working fluid from the closed cycle fluid path by opening the ...

Подробнее
Номер записи: 88
08-09-2022 дата публикации

Calcination System With Thermal Energy Storage System

Номер: US20220282638A1
Автор: "ODonnell John Setel", Ferhani Yusef Desjardins, Jonemann Matthieu, Keller Jeremy Quentin, Ratz Robert, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system. 1. A calcination system , comprising: a heating element configured to heat a storage medium using electricity from the renewable energy source; and', 'a blower configured to heat a non-combustive fluid including carbon dioxide by circulating the non-combustive fluid through the heated storage medium;, 'a thermal energy storage (TES) system configured to store thermal energy derived from a renewable energy source, wherein the TES system includes receiving thermal energy obtained from the heated non-combustive fluid; and', 'applying the received thermal energy to the calcium carbonate., 'the calcination system further comprising a calciner configured to removed carbon dioxide from a supply of calcium carbonate within the calciner, by2. The calcination system of claim 1 , wherein the calciner is configured to apply the received thermal energy by:injecting calcium ...

Подробнее
Номер записи: 89
30-04-2020 дата публикации

STEAM POWER PLANT HAVING AN IMPROVED CONTROL RESERVE

Номер: US20200131940A1
Автор: Becker Stefan, Danov Vladimir, Loeper Thomas, Mielke Christian
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A method and to an apparatus for providing additional control power of a power plant process. The power plant process includes a steam turbine connected into a water vapor circuit, having at least one high-pressure part and a medium-pressure and/or no-pressure part, which are connected to one another via a cold intermediate superheating line, a steam generator and a condenser. A steam reservoir is provided, which is formed as a Ruths reservoir and in which an encapsulated PCM reservoir is integrated. To charge the steam reservoir, hot steam is taken from the cold intermediate superheating line, between the high-pressure and the medium-pressure and/or low-pressure part of the steam turbine, and for charging, and thus for providing additional control power, steam is taken from the steam reservoir and fed back into the water vapor circuit between the steam generator and the condenser. 1. A method for providing additional control power of a power plant process comprising a steam turbine which is connected into a steam circuit and which has at least one high-pressure and one medium- and/or low-pressure part , which are connected to one another via a cold intermediate superheating line , has a steam generator and has a condenser , the method comprising:providing a steam accumulator, wherein the steam accumulator is a Ruths accumulator into which an encapsulated PCM accumulator is integrated,for the purpose of charging, extracting hot steam from the cold intermediate superheating line between the high-pressure and the medium- and/or low-pressure part of the steam turbine, andfor the purpose of discharging, and thus for the purpose of providing additional control power, extracting steam which is fed back into the steam circuit between the steam generator and the condenser.2. A power plant , comprising:a steam turbine which has a steam generator and a condenser and which is connected into a steam circuit and which has at least one high-pressure and one medium- and/or low- ...

Подробнее
Номер записи: 90
26-05-2016 дата публикации

Optimization of cold starts in thermal power stations, in particular in steam-electric power plants or in combined cycle power plants (ccpps)

Номер: US20160146110A1
Автор: Holger Hackstein, Leif Wiebking
Принадлежит: SIEMENS AG

A thermal power plant, in particular to a steam-electric power plant or a combined cycle power plant (CCPP), and a method for operating a thermal power plant is adapted to accelerate, or to technically and/or economically optimize the start-up of the thermal power plant, in particular to accelerate/optimize a cold-start phase of the thermal power station. The thermal power plant has an auxiliary energy store integrated into the power plant. The store, during the start-up of the thermal power plant, delivers energy for heating/pre-heating components and/or media of the thermal power plant, or supplies an electrical power distribution network.

Подробнее
Номер записи: 91
24-05-2018 дата публикации

ENERGY STORAGE DEVICE AND METHOD FOR STORING ENERGY

Номер: US20180142577A1
Автор: Graf Werner, ORTMANN Peter
Принадлежит:

An energy storage device for storing energy including: a high-temperature regenerator containing a storage material and a working gas as heat transfer medium for the purpose of exchanging heat between the storage material and the traversing working gas, a closed charging circuit for the working gas, including a first compressor, a first expander, a first recuperator having a first and a second heat exchange duct, the high-temperature regenerator and a pre-heater, wherein the first compressor is coupled to the first expander by a shaft, a discharging circuit for the working gas, and including a switch that selectively connects the high-temperature regenerator to either the charging circuit or the discharging circuit, such that the circuit containing the high-temperature regenerator forms a closed circuit. 1. An energy storage device for storing energy , comprising:a high-temperature regenerator containing a solid, in particular porous, storage material, and a working gas as a heat transfer medium, for the purpose of exchanging heat between the storage material and the working gas flowing through,a closed charging circuit for the working gas, comprising a first compressor, a first expander, a first recuperator that has a first and a second heat exchange duct, the high-temperature regenerator and a preheater, wherein the first compressor is coupled to the first expander by means of a shaft, and wherein the charging circuit is realized in such a manner that, starting from the high-temperature regenerator, at least the first heat exchange duct of the recuperator, the first expander, the preheater, the second heat exchange duct of the recuperator, the first compressor, and then the high-temperature generator, are connected to each other in a fluid-conducting manner, forming a closed circuit, anda closed discharging circuitwherein a switching means in a fluid-conducting manner connects the high-temperature regenerator either to the charging circuit or to the discharging ...

Подробнее
Номер записи: 92
04-06-2015 дата публикации

EXTERNAL HEAT ENGINES

Номер: US20150152747A1
Автор: Devisser Harold, Godwin Harold Emerson
Принадлежит:

An engine includes a plurality of vessels coupled to a rotatable frame and arranged about a center of rotation of the rotatable frame. Conduits connect pairs of vessels to allow mass to move between the pairs of vessels to generate a gravitational moment about the center of rotation. Each pair of vessels can have a pathway for conveying fluid heated by a heat source. The pathway extends from the heat source to a lower vessel of the pair, and can further extend from the lower vessel to an upper vessel of the pair. The pathway can be configured to expand volatile material in the lower vessel to tend to push the mass from the lower vessel into the upper vessel, and to contract volatile material in the upper vessel to tend to suck the mass into the upper vessel from the lower vessel. Vessels can be controllably connected to pressures to move mass via controllable pressure and temperature distribution systems. 1. An engine configured to extract energy from a heat source , the engine comprising:a plurality of vessels coupled to and arranged about a shaft;a plurality of conduits connecting the plurality of vessels together to convey mass between the vessels;each of the plurality of vessels being in communication with at least one other of the plurality of vessels via at least one of the conduits, a pressure difference between a lower positioned vessel of the plurality of vessels and a higher positioned vessel of the plurality of vessels causing mass to move from the lower positioned vessel into the higher positioned vessel to produce a gravitational moment that encourages rotation of the plurality of vessels and connected conduits in a first direction, the pressure difference at least in part due to expansion of volatile material at the lower positioned vessel;a rotary manifold configured to control flow of one or both of heated and cooled fluid from at least one source to the engine; anda plurality of controllable valves configured to control delivery of one or both of ...

Подробнее
Номер записи: 93
24-05-2018 дата публикации

AUXILIARY ELECTRIC ENERGY STORAGE AND SUPPLY SYSTEM FOR A POWER PLANT

Номер: US20180145511A1
Автор: Biellmann Hervé
Принадлежит:

An annex supply system for an electrical power plant includes an energy extraction network configured to receive AC current from a main production unit, a main auxiliary network coupled to the extraction network, and a secondary supply unit. The secondary unit includes a storage element coupled to a means for reversible conversion from direct to alternating current that is controllable to selectively (i) charge the storage element from the main auxiliary network, and (ii) discharge energy from the storage element to the main auxiliary network. The secondary unit is configured to (i) provide a first power profile at least sufficient to provide services to a transmission network, and/or (ii) provide to the main auxiliary network a second power profile required to operate auxiliary equipment in case of inoperability of a normal power supply source of the main auxiliary network. 111-. (canceled)12. An annex electric energy supply system for an electrical power plant coupled to an electricity transmission network , the electrical power plant including a main electric energy production unit that includes at least one turbine connected to a generator , said annex electric energy supply system comprising:an energy extraction network coupled to the transmission network, said energy extraction network configured to receive AC current from the main electric energy production unit;a main auxiliary network coupled to said energy extraction network, said main auxiliary network operable to power auxiliary equipment required for operation of the electrical power plant; anda secondary electric energy supply unit comprising at least one continuously operable electric energy restitution and storage unit, said at least one electric energy restitution and storage unit comprising at least one electric energy storage element coupled to a first means for reversible conversion from direct current to alternating current, said first means for reversible conversion controllable to selectively ...

Подробнее
Номер записи: 94
02-06-2016 дата публикации

METHANATION METHOD AND POWER PLANT COMPRISING CO2 METHANATION OF POWER PLANT FLUE GAS

Номер: US20160153316A1
Автор: Bergins Christian, Buddenberg Torsten, Kakaras Emmanouil
Принадлежит:

One embodiment relates to a methanation method comprising the conversion into methane (CH) of CO, in particular COgas, originating from, in particular diverted or obtained from, power plant flue gas from a power plant fired with carbon-containing fuel, in particular carbon-containing gas, and having a connected water/steam circuit, said method being performed in a methanation plant. Some embodiments provide a solution that makes it possible to couple a power plant and a methanation plant to one another in an energetically favorable manner. 1. A methanation process comprising the conversion of CO , more particularly COgas , originating , more particularly diverted or obtained , from a power station flue gas of a power station fired with a carbonaceous fuel , more particularly of a power station fired with a carbonaceous gas , with attached water/steam circuit , into methane in a methanation plant ,{'sub': 2', '2', '2, 'said process comprising coupling out the heat energy arising as waste heat in the conversion of COto methane in the methanation plant at least partly into at least one materials stream and/or heat energy stream wherein this stream is supplied at least partly to at least one medium flowing into the combustion chamber of a steam generator of the power station on the burner side and/or to the water/steam circuit of the power station and/or to a COexhaust gas treatment or COworkup, more particularly power station flue gas treatment plant, which is connected upstream, in terms of process engineering, of the methanation plant, and/or to one or more operating stages of an attached industrial plant.'}2. The methanation process as claimed in claim 1 , wherein the power station claim 1 , more particularly the combustion chamber of the steam generator claim 1 , is supplied with a coproduct gas comprising one or more gaseous byproducts or waste products of an industrial plant claim 1 , more particularly of a chemical works or of a smelting works claim 1 , ...

Подробнее
Номер записи: 95
17-06-2021 дата публикации

STORAGE OF EXCESS HEAT IN COLD SIDE OF HEAT ENGINE

Номер: US20210180472A1
Автор: Apte Raj, Larochelle Philippe
Принадлежит:

Extra heat in a closed cycle power generation system, such as a reversible closed Brayton cycle system, may be dissipated between discharge and charge cycles. An extra cooling heat exchanger may be added on the discharge cycle and disposed between a cold side heat exchanger and a compressor inlet. Additionally or alternatively, a cold thermal storage medium passing through the cold side heat exchanger may be allowed to heat up to a higher temperature during the discharge cycle than is needed on input to the charge cycle and the excess heat then dissipated to the atmosphere. 1. A system comprising:a compressor;a recuperator;a hot side heat exchanger;a turbine;a cold side heat exchanger;a cooling heat exchanger; anda working fluid circulating in a closed cycle path through, in sequence, the compressor, the recuperator, the hot side heat exchanger, the turbine, the recuperator, the cooling heat exchanger, and the cold side heat exchanger in a discharge mode and the compressor, the hot-side heat exchanger, the recuperator, the turbine, the cold-side heat exchanger, and the recuperator in a charge mode, wherein the cooling heat exchanger is configured to remove heat from the working fluid.2. The system of claim 1 , wherein the working fluid circulates in the closed cycle path in the same direction in both the charge mode and the discharge mode.3. The system of claim 1 , further comprising:a first cold side thermal storage (“CTS”) tank;a second CTS tank; anda CTS medium flowing from the first CTS tank, through the cold side heat exchanger, and to the second CTS tank.4. The system of claim 3 , further comprising:a first hot side thermal storage (“HTS”) tank;a second HTS tank; andan HTS medium flowing from the first HTS tank, through the hot side heat exchanger, and to the second HTS tank.5. The system of claim 4 , wherein the HTS medium is molten salt.6. The system of claim 1 , wherein the cooling heat exchanger is a radiator claim 1 , wherein the working fluid circulating ...

Подробнее
Номер записи: 96
23-05-2019 дата публикации

Varying Compression Ratios in Energy Storage and Retrieval Systems

Номер: US20190153901A9
Автор: Cizek Nicholas, Larochelle Philippe, Laughlin Robert B.
Принадлежит:

The present disclosure provides pumped thermal energy storage systems that can be used to store electrical energy. A pumped thermal energy storage system of the present disclosure can store energy by operating as a heat pump or refrigerator, whereby net work input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. The system can extract energy by operating as a heat engine transferring heat from the hot side to the cold side, which can result in net work output. Systems of the present disclosure can employ solar heating for improved storage efficiency. 1. A method comprising:operating a pumped thermal system in a charging cycle at a first compression ratio, wherein the pumped thermal system comprises a working fluid circulating through, in sequence, a compressor system, a hot side heat exchanger, a turbine system, and a cold side heat exchanger, wherein the working fluid is in thermal contact with a hot thermal storage (“HTS”) medium in the hot side heat exchanger and the working fluid is in thermal contact with a cold thermal storage (“CTS”) medium in the cold side heat exchanger; andoperating the pumped thermal system in a discharging cycle at a second compression ratio different than the first compression ratio.2. The method of claim 1 , wherein the compressor system comprises at least a first compressor and the second compressor.3. The method of claim 2 , wherein operating the pumped thermal system in the charging cycle at the first compression ratio comprises circulating the working fluid through the first compressor and the second compressor in parallel claim 2 , and wherein operating the pumped thermal system in the discharging cycle at the second compression ratio comprises circulating the working fluid through the first compressor and the second compressor in series.4. The method of claim 2 ...

Подробнее
Номер записи: 97
08-06-2017 дата публикации

Methods of Hot and Cold Side Charging in Thermal Energy Storage Systems

Номер: US20170159495A1
Автор: Cizek Nicholas, Larochelle Philippe, Laughlin Robert B.
Принадлежит:

The present disclosure provides pumped thermal energy storage systems that can be used to store electrical energy. A pumped thermal energy storage system of the present disclosure can store energy by operating as a heat pump or refrigerator, whereby net work input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. The system can extract energy by operating as a heat engine transferring heat from the hot side to the cold side, which can result in net work output. Systems of the present disclosure can employ solar heating for improved storage efficiency. 1. A method comprising: a compressor,', 'a hot side heat exchanger,', 'a hot thermal storage (“HTS”) medium,', 'a turbine,', 'a cold side heat exchanger,', 'a cold thermal storage (“CTS”) medium,', 'a working fluid, and', 'a closed cycle fluid path configured to circulate a working fluid through, in sequence, the compressor, the hot side heat exchanger and in thermal contact with the HTS medium, the turbine, and the cold side heat exchanger and in thermal contact with the CTS medium; and, 'operating a pumped thermal system in a charging mode, wherein the pumped thermal system is configured to operate in a charging mode in which energy is stored in the pumped thermal system and a discharging mode in which energy is discharged from the pumped thermal system, wherein the pumped thermal system comprisesadding thermal energy from an external thermal energy source to the HTS medium.2. The method of claim 1 , further comprising transferring thermal energy from the CTS medium to the HTS medium via the working fluid.3. The method of claim 1 , wherein the external thermal energy source comprises concentrating solar heat as a source of external thermal energy.4. The method of claim 1 , wherein the external thermal energy source comprises a waste heat stream from ...

Подробнее
Номер записи: 98
08-06-2017 дата публикации

Varying Compression Ratios in Energy Storage and Retrieval Systems

Номер: US20170159496A1
Автор: Cizek Nicholas, Larochelle Philippe, Laughlin Robert B.
Принадлежит:

The present disclosure provides pumped thermal energy storage systems that can be used to store electrical energy. A pumped thermal energy storage system of the present disclosure can store energy by operating as a heat pump or refrigerator, whereby net work input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. The system can extract energy by operating as a heat engine transferring heat from the hot side to the cold side, which can result in net work output. Systems of the present disclosure can employ solar heating for improved storage efficiency. 1. A method comprising:operating a pumped thermal system in a charging cycle at a first compression ratio, wherein the pumped thermal system comprises a working fluid circulating through, in sequence, a compressor system, a hot side heat exchanger, a turbine system, and a cold side heat exchanger, wherein the working fluid is in thermal contact with a hot thermal storage (“HTS”) medium in the hot side heat exchanger and the working fluid is in thermal contact with a cold thermal storage (“CTS”) medium in the cold side heat exchanger; andoperating the pumped thermal system in a discharging cycle at a second compression ratio different than the first compression ratio.2. The method of claim 1 , wherein the compressor system comprises at least a first compressor and the second compressor.3. The method of claim 2 , wherein operating the pumped thermal system in the charging cycle at the first compression ratio comprises circulating the working fluid through the first compressor and the second compressor in parallel claim 2 , and wherein operating the pumped thermal system in the discharging cycle at the second compression ratio comprises circulating the working fluid through the first compressor and the second compressor in series.4. The method of claim 2 ...

Подробнее
Номер записи: 99
08-06-2017 дата публикации

Pumped Thermal Systems with Variable Stator Pressure Ratio Control

Номер: US20170159497A1
Автор: Nicholas Cizek, Philippe Larochelle, Robert B. Laughlin
Принадлежит: Gigawatt Day Storage Systems Inc, X Development LLC

The present disclosure provides pumped thermal energy storage systems that can be used to store electrical energy. A pumped thermal energy storage system of the present disclosure can store energy by operating as a heat pump or refrigerator, whereby net work input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. The system can extract energy by operating as a heat engine transferring heat from the hot side to the cold side, which can result in net work output. Systems of the present disclosure can employ solar heating for improved storage efficiency.

Подробнее
Номер записи: 100