公开(公告)号：US20250146425A1

公开(公告)日：2025-05-08

申请号：US19018318

申请日：2025-01-13

Applicant: MALTA INC.

Inventor： Bao H. TRUONG

IPC: F01D15/10 ,  F01K27/02 ,  F02C6/14 ,  F28D17/04 ,  F28D20/00

Abstract: In accordance with the present disclosure, a pumped-heat energy storage (“PHES”) system operable in charge and power generation modes can include a working fluid path circulating a working fluid through, in sequence, at least a compressor system, a hot-side heat exchanger system, a turbine system, a cold-side heat exchanger system, and back to the compressor system; and an intercooler system for providing cooling to the compressor system, the intercooling system including at least one intercooler heat exchanger arranged for transferring heat out from working fluid amid different stages of the compressor system to a power plant. A fluid path can be arranged for providing a power plant fluid to receive heat from the intercooler system. The fluid path can be arranged to pass the power plant fluid to the intercooler system to receive heat and to the power plant for use in heating in power generation.

公开(公告)号：US20240301821A1

公开(公告)日：2024-09-12

申请号：US18662203

申请日：2024-05-13

Applicant: MALTA INC.

Inventor： Benjamin R. BOLLINGER ,  Bao H. TRUONG ,  Michael GEYER ,  Frederick REDELL

IPC: F02C6/14 ,  F01K3/02 ,  F01K3/12 ,  F01K3/18 ,  F01K7/38 ,  F02C1/05 ,  F02C1/10 ,  F28D20/00

CPC classification number: F02C6/14 ,  F01K3/02 ,  F01K3/12 ,  F01K3/18 ,  F01K7/38 ,  F02C1/05 ,  F02C1/10 ,  F05D2220/60 ,  F28D2020/0047 ,  F28D20/0056 ,  F28D2020/0082 ,  Y02E60/14

Abstract: 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 steam plants to provided heating to the steam cycle.

公开(公告)号：US20230203966A1

公开(公告)日：2023-06-29

申请号：US18108101

申请日：2023-02-10

Applicant: MALTA INC.

Inventor： Raj APTE ,  Philippe LAROCHELLE

IPC: F01K3/02 ,  F02C9/24 ,  B01D53/26 ,  F02C1/05 ,  F02C1/08 ,  F02C1/10 ,  F01K13/00 ,  F02C1/04 ,  F02C6/16 ,  F02C6/14 ,  F28D20/00 ,  F01K3/10 ,  F01K3/06 ,  F01K3/12 ,  F01K3/18 ,  F01K7/38 ,  F01K13/02 ,  F01K25/10 ,  F22B1/00

CPC classification number: F01K3/02 ,  F02C9/24 ,  B01D53/265 ,  F02C1/05 ,  F02C1/08 ,  F02C1/105 ,  F01K13/00 ,  F02C1/04 ,  F02C6/16 ,  F02C1/10 ,  F02C6/14 ,  F28D20/00 ,  F01K3/10 ,  F01K3/06 ,  F01K3/12 ,  F01K3/18 ,  F01K7/38 ,  F01K13/02 ,  F01K25/103 ,  F22B1/006 ,  Y02E60/14 ,  F01K25/06

Abstract: Systems and methods relating to use of external air for inventory control of a closed thermodynamic cycle system or energy storage system, such as a reversible Brayton cycle system, are disclosed. A method may involve, in a closed cycle system operating in a power generation mode, circulating a working fluid may through a closed cycle fluid path. The closed cycle fluid path may include a high pressure leg and a low pressure leg. The method may further involve in response to a demand for increased power generation, compressing and dehumidifying environmental air. And the method may involve injecting the compressed and dehumidified environmental air into the low pressure leg.

公开(公告)号：US11655759B2

公开(公告)日：2023-05-23

申请号：US17092806

申请日：2020-11-09

Applicant: MALTA INC.

Inventor： Raj B. Apte ,  Philippe Larochelle ,  Julian Green

IPC: F02C6/16 ,  F01K3/12 ,  F01K7/16 ,  F01K23/10 ,  F02C1/10 ,  H02K7/18

CPC classification number: F02C6/16 ,  F01K3/12 ,  F01K7/16 ,  F01K23/10 ,  F02C1/10 ,  H02K7/1823 ,  Y02E20/14 ,  Y02E20/16 ,  Y02E60/16

Abstract: 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.

公开(公告)号：US20230101306A1

公开(公告)日：2023-03-30

申请号：US18059121

申请日：2022-11-28

Applicant: MALTA INC.

Inventor： Philippe LAROCHELLE ,  Raj APTE

IPC: F01K13/02 ,  F01K7/16 ,  F01K25/10 ,  F25B13/00 ,  F25B9/00 ,  F25B25/00 ,  F25B9/06 ,  F01K3/06 ,  F01K3/12 ,  F01K3/18 ,  F01K7/38 ,  F22B1/00 ,  F01K3/02

Abstract: 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.

公开(公告)号：US20230073676A1

公开(公告)日：2023-03-09

申请号：US17796899

申请日：2021-02-03

Applicant: MALTA INC.

Inventor： Raj B. APTE ,  Philippe LAROCHELLE ,  Benjamin R. BOLLINGER

IPC: H02K7/18 ,  F02C6/14 ,  F02C6/04

Abstract: Pumped heat energy storage systems that can be used to store and extract electrical energy. A motor/generator system is releasably coupled and decoupled via clutches from a charge mode powertrain and a generation mode powertrain depending on the operating mode of the pumped heat energy storage system.

公开(公告)号：US11578622B2

公开(公告)日：2023-02-14

申请号：US17164286

申请日：2021-02-01

Applicant: MALTA INC.

Inventor： Raj Apte ,  Philippe Larochelle

IPC: F01K3/02 ,  F02C9/24 ,  F02C1/05 ,  F02C1/10 ,  F01K13/00 ,  F02C1/04 ,  F02C6/16 ,  F02C6/14 ,  F01K3/12 ,  F01K13/02 ,  B01D53/26 ,  F02C1/08 ,  F28D20/00 ,  F01K3/10 ,  F01K3/06 ,  F01K3/18 ,  F01K7/38 ,  F01K25/10 ,  F22B1/00 ,  F01K25/06

Abstract: Systems and methods relating to use of external air for inventory control of a closed thermodynamic cycle system or energy storage system, such as a reversible Brayton cycle system, are disclosed. A method may involve, in a closed cycle system operating in a power generation mode, circulating a working fluid may through a closed cycle fluid path. The closed cycle fluid path may include a high pressure leg and a low pressure leg. The method may further involve in response to a demand for increased power generation, compressing and dehumidifying environmental air. And the method may involve injecting the compressed and dehumidified environmental air into the low pressure leg.

公开(公告)号：US11512613B2

公开(公告)日：2022-11-29

申请号：US17164295

申请日：2021-02-01

Applicant: MALTA INC.

Inventor： Philippe Larochelle ,  Raj Apte

IPC: F01K13/02 ,  F01K7/16 ,  F01K25/10 ,  F25B13/00 ,  F25B9/00 ,  F25B25/00 ,  F25B9/06 ,  F01K3/06 ,  F01K3/12 ,  F01K3/18 ,  F01K7/38 ,  F22B1/00 ,  F01K3/02 ,  F01K25/06

Abstract: 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.

公开(公告)号：US11352951B2

公开(公告)日：2022-06-07

申请号：US17069496

申请日：2020-10-13

Applicant: MALTA INC.

Inventor： Raj Apte ,  Richard DeVaul ,  Philippe Larochelle

IPC: F01D15/10 ,  F02C1/05 ,  F02C6/14 ,  F02C1/10 ,  F02C9/24 ,  H02K7/18

Abstract: Systems and methods relating to variable pressure turbines are disclosed. A power generation system may include a closed cycle system configured to generate power, a combustor, and a control system. The closed cycle system may include a working fluid circulating in a closed cycle path. The combustor may provide thermal energy to the working fluid. Further, the control system may be configured to determine to increase an amount of power generated by the closed cycle system, and in response to the determination to increase the amount of power generated by the closed cycle system, cause an increase in pressure of the working fluid in the closed cycle path.

公开(公告)号：US11156385B2

公开(公告)日：2021-10-26

申请号：US16289017

申请日：2019-02-28

Applicant: Malta Inc.

Inventor： Robert B. Laughlin ,  Philippe Larochelle ,  Nicholas Cizek

IPC: F01K13/02 ,  F02C1/10 ,  F02C6/14 ,  F01K3/12 ,  F28D15/00 ,  F28D20/00 ,  F01K3/00 ,  F01K3/18 ,  F01K3/20 ,  F24S60/10

Abstract: 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.