HYSTERESIS MANIPULATION OF SMA OR NTE MATERIAL FOR USE IN AN ENERGY RECOVERY DEVICE

    公开(公告)号:US20210148340A1

    公开(公告)日:2021-05-20

    申请号:US16623040

    申请日:2018-06-14

    Abstract: The application discloses an energy recovery device comprising a drive mechanism; an engine core comprising a plurality of Shape Memory Alloy (SMA) elements or Negative Thermal Expansion (NTE) elements fixed at a first end and connected at a second end to the drive mechanism. A block mechanism is positioned between the engine core and the drive mechanism to restrict movement of the drive mechanism until the elements reach a desired temperature.

    SMA MATERIAL PERFORMANCE BOOST FOR USE IN AN ENERGY RECOVERY DEVICE

    公开(公告)号:US20200173427A1

    公开(公告)日:2020-06-04

    申请号:US16623084

    申请日:2018-06-14

    Inventor: Kevin O'TOOLE

    Abstract: The application discloses an energy recovery method and device comprising an engine comprising a plurality of elongated Shape Memory Alloy (SMA) elements or Negative Thermal Expansion (NTE) elements fixed at a first end and connected at a second end to a drive mechanism. An immersion chamber adapted for housing the engine and adapted to be sequentially filled with fluid to allow a heating cycle and a cooling cycle of the SMA elements to expand and contract the SMA elements; and a stress is applied to at least one of the SMA elements during the cooling and/or heating cycle.

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