Gas separated cycling of SMA/NTE bundles in a fluid environment for power production cycle or heat pump cycles

    公开(公告)号:US11852125B2

    公开(公告)日:2023-12-26

    申请号:US17603164

    申请日:2020-04-14

    申请人: EXERGYN, LTD.

    IPC分类号: F03G7/06

    CPC分类号: F03G7/0614

    摘要: The invention provides an energy recovery system comprising a plurality of Shape-Memory Alloy (SMAs) or Negative Thermal Expansion (NTE) elements arranged to define a core and housed in an immersion chamber. A first fluid is introduced into the chamber and provides a first temperature change to activate the core from a first state to a second state and a second fluid is introduced at a second temperature to activate the core from the second state to the first state. A gas is inserted into the chamber between the first fluid and the second fluid. The advantage of the invention is that increased efficiency and power production from the SMA/NTE engine is achieved.

    Heat pump utilising the shape memory effect

    公开(公告)号:US11656008B2

    公开(公告)日:2023-05-23

    申请号:US16966296

    申请日:2019-01-30

    申请人: EXERGYN LTD.

    摘要: The invention provides a heat pump system and method comprising a Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) core (2a, 2b) positioned in a housing and adapted to absorb heat and store energy in response to a first fluid inputted at a first temperature. The housing is configured to receive a second fluid via an inlet wherein a device changes pressure in the housing to cause the SMA or NTE core to change state to release the heat absorbed into the second fluid. An outlet is adapted to output the second fluid at a higher temperature than the first temperature.

    A HEAT PUMP AND HOUSING FOR A HEAT PUMP

    公开(公告)号:US20220357095A1

    公开(公告)日:2022-11-10

    申请号:US17632384

    申请日:2020-08-02

    申请人: EXERGYN LTD.

    IPC分类号: F25D19/00 F16M1/04

    摘要: The invention provides a heat pump system comprising a base support; a top support and one or more elongated support structures connected to the base support and the top support. A hydraulic system configured to provide a compression stress to at least one SMA or NTE or elastocaloric core during use. An inlet for receiving fluid and an outlet for exiting the fluid; and at least one valve configured to control the inlet and the outlet. The elongated support is configured to engage with the SMA core to prevent the SMA material buckling when a compression stress is applied.

    GAS SEPARATED CYCLING OF SMA/NTE BUNDLES IN A FLUID ENVIRONMENT FOR POWER PRODUCTION CYCLE OR HEAT PUMP CYCLES

    公开(公告)号:US20240077063A1

    公开(公告)日:2024-03-07

    申请号:US18389055

    申请日:2023-11-13

    申请人: Exergyn, Ltd.

    IPC分类号: F03G7/06

    CPC分类号: F03G7/0614

    摘要: The invention provides energy recovery or heat pump system comprising a plurality of Shape-Memory Alloy (SMAs) or Negative Thermal Expansion (NTE) elements arranged to define a core and housed in an immersion chamber. A first fluid can be introduced into the chamber provides a first temperature change to activate the core from a first state to a second state and a second fluid is introduced at a second temperature to activate the core from the second state to the first state. A controlled gas is inserted into the chamber between the first fluid and the second fluid. The advantage of the invention is that increased efficiency and power production from the SMA/NTE engine is achieved, or increased CoP within the SMA/NTE heat pump. By eliminating energy destruction via the mixing of fluids, the power production cycle can either operate faster, which means the same quantity of SMA/NTE material can produce more power, or a lower number of NTE strands can be used to create the same power that allow mixing to occur. Similarly within a heat pump, the separation of fluid can be of benefit in the heating or cooling of the SMA/NTE core, and also in the separation of the fluid that is either cooled or heated by the heat pump cycle.

    GAS SEPARATED CYCLING OF SMA/NTE BUNDLES IN A FLUID ENVIRONMENT FOR POWER PRODUCTION CYCLE OR HEAT PUMP CYCLES

    公开(公告)号:US20220195997A1

    公开(公告)日:2022-06-23

    申请号:US17603164

    申请日:2020-04-14

    申请人: EXERGYN, LTD.

    IPC分类号: F03G7/06

    摘要: The invention provides an energy recovery system comprising a plurality of Shape-Memory Alloy (SMAs) or Negative Thermal Expansion (NTE) elements arranged to define a core and housed in an immersion chamber. A first fluid is introduced into the chamber and provides a first temperature change to activate the core from a first state to a second state and a second fluid is introduced at a second temperature to activate the core from the second state to the first state. A gas is inserted into the chamber between the first fluid and the second fluid. The advantage of the invention is that increased efficiency and power production from the SMA/NTE engine is achieved.

    Rotary core modular SMA device
    17.
    发明授权

    公开(公告)号:US10001113B2

    公开(公告)日:2018-06-19

    申请号:US14898168

    申请日:2014-06-13

    申请人: Exergyn Ltd.

    IPC分类号: F03G7/06

    CPC分类号: F03G7/065

    摘要: The invention provides an energy recovery device comprising a first SMA core housed in a first immersion chamber and adapted to be sequentially filled with fluid to allow heating and/or cooling of the first SMA core wherein a first shaft is adapted to be turned by the SMA core mounted concentrically around said first shaft. The SMA core comprises a plurality of SMA elements to define a module, wherein a plurality of modules are mounted in series and whereby movement of a first module is configured to be input to a second module enabling cumulative rotation of the shaft.

    SYSTEM AND METHOD FOR SUPPORTING SMA MATERIAL AND OPTIMISING HEAT TRANSFER IN A SMA HEAT PUMP

    公开(公告)号:US20220275981A1

    公开(公告)日:2022-09-01

    申请号:US17632137

    申请日:2020-08-01

    申请人: EXERGYN LTD.

    IPC分类号: F25B30/02 F25B23/00

    摘要: The invention provides heat pump system a Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) or elastocaloric material core positioned in a housing and adapted to absorb thermal heat and store energy in response to a first fluid inputted at a first temperature. The housing is configured to receive the fluid at the first temperature via an inlet to cause the SMA or NTE or elastocaloric material core to change state. A device is configured to apply stress on the SMA or NTE or elastocaloric core in the housing to cause the SMA or NTE or elastocaloric core to change state. A support system is configured to engage with the material in the core to prevent the material buckling when the stress is applied wherein the support system comprises a series of buckling supports positioned along at least one length of the SMA or NTE or elastocaloric material core. The support system provides a mechanical buckling support and heat transfer optimisation for fluid flow in a SMA heat pump during compression.

    SYSTEM AND METHOD FOR MAXIMISING HEAT OUTPUT AND TEMPERATURE DELTA IN A SMA HEAT PUMP/REFRIGERATION SYSTEM

    公开(公告)号:US20220275980A1

    公开(公告)日:2022-09-01

    申请号:US17632127

    申请日:2020-08-01

    申请人: EXERGYN LTD.

    IPC分类号: F25B23/00

    摘要: The invention provides a heat pump system and method comprising a first Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) elastocaloric core positioned in a housing and adapted to absorb heat and store energy in response to a first fluid inputted at a first temperature. The housing is configured to receive the first fluid at a first temperature via an inlet to cause the first SMA or NTE elastocaloric core to change state. A device is configured to apply stress on the first SMA or NTE core in the housing to cause the SMA or NTE elastocaloric core to change state, releasing heat/energy and causing the SMA/NTE to heat up. A second fluid at a higher temperature is inputted and then subsequently heated further as a result of heat transfer. A second Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) or elastocaloric core is positioned in a cascade arrangement with the first core, but exhibiting a higher activation temperature. The higher temperature fluid leaving core 1 is inputted into core 2, resulting in a larger net temperature lift than could be achieved with a single core. In the alternative, in a cooling system, to achieve a lower temperature drop, the second core in the cascade can exhibit a lower activation temperatures than the first core. The cycle focus is on the endothermic stress release component where the SMA/NTE/elastocaloric core absorbs energy from the fluid. The first core results in a fluid stream drop and that then enters the second core with lower activation temperatures, resulting in a further drop of the output fluid during the cooling half of the cycle.

    HYDRAULIC TRANSMISSION FOR A SMA ENGINE USED IN AN ENERGY RECOVERY DEVICE

    公开(公告)号:US20200256321A1

    公开(公告)日:2020-08-13

    申请号:US16647899

    申请日:2018-09-18

    申请人: Exergyn Ltd.

    发明人: Fintan Mcdonnell

    IPC分类号: F03G7/06

    摘要: The invention provides an energy recovery method and system comprising a first Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) core and adapted to convert movement of the core into energy in response to a change in temperature, and a fluid provides a temperature change to activate the first core, to generate a power stroke; and a back load is applied to the SMA core with a force higher than a maximum relaxation force of the SMA core. The advantage of the invention is to be able to allow a multistage variable loading regime on an SMA engine to increase the system efficiency. The invention provides a method of transferring large reciprocating forces into a steady rotary motion.