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    ELECTROCALORIC HEAT TRANSFER SYSTEM
    2.
    发明申请
    ELECTROCALORIC HEAT TRANSFER SYSTEM 审中-公开

    公开(公告)号：US20190170409A1

    公开(公告)日：2019-06-06

    申请号：US16313762

    申请日：2016-06-27

    申请人： United Technologies Corporation

    发明人： Scott Alan Eastman ,  Joseph V. Mantese ,  Wei Xie ,  Subramanyaravi Annapragada ,  Parmesh Verma ,  Sergei F. Burlatsky ,  Wayde R. Schmidt ,  Treese Hugener-Campbell

    IPC分类号： F25B21/00 ,  H01L37/02

    摘要： A heat transfer system is disclosed in which, an electrocaloric material includes a copolymer of a monomer mixture including (i) vinylidene fluoride, (ii) an addition polymerization monomer selected from tetrafluoroethylene, trifluoroethylene, or a monomer smaller than trifluoroethylene, and (iii) a halogenated addition polymerization monomer different than (ii) that is larger than vinylidene fluoride. The electrocaloric material also includes an additive selected from a nucleating agent having a polar surface charge, electrocalorically active solid particles, or a combination thereof. Electrodes are disposed on opposite surfaces of the electrocaloric material, and an electric power source is configured to provide voltage to the electrodes. The system also includes a first thermal flow path between the electrocaloric material and a heat sink, and a second thermal flow path between the electrocaloric material and a heat source.

    Electrocaloric heat transfer system
    5.
    发明授权
    Electrocaloric heat transfer system 有权

    公开(公告)号：US11428444B2

    公开(公告)日：2022-08-30

    申请号：US16313762

    申请日：2016-06-27

    申请人： United Technologies Corporation

    发明人： Scott Alan Eastman ,  Joseph V. Mantese ,  Wei Xie ,  Subramanyaravi Annapragada ,  Parmesh Verma ,  Sergei F. Burlatsky ,  Wayde R. Schmidt ,  Treese Hugener-Campbell

    IPC分类号： F25B21/00 ,  H01L37/02 ,  C09K5/14

    摘要： A heat transfer system is disclosed in which, an electrocaloric material includes a copolymer of a monomer mixture including (i) vinylidene fluoride, (ii) an addition polymerization monomer selected from tetrafluoroethylene, trifluoroethylene, or a monomer smaller than trifluoroethylene, and (iii) a halogenated addition polymerization monomer different than (ii) that is larger than vinylidene fluoride. The electrocaloric material also includes an additive selected from a nucleating agent having a polar surface charge, electrocalorically active solid particles, or a combination thereof. Electrodes are disposed on opposite surfaces of the electrocaloric material, and an electric power source is configured to provide voltage to the electrodes. The system also includes a first thermal flow path between the electrocaloric material and a heat sink, and a second thermal flow path between the electrocaloric material and a heat source.

    ELECTROCALORIC HEAT TRANSFER MODULAR STACK
    6.
    发明申请
    ELECTROCALORIC HEAT TRANSFER MODULAR STACK 审中-公开

    公开(公告)号：US20190003747A1

    公开(公告)日：2019-01-03

    申请号：US16064822

    申请日：2015-12-21

    申请人： UNITED TECHNOLOGIES CORPORATION

    发明人： Craig R. Walker ,  Jonathan Rheaume ,  Michael L. Perry ,  Scott Alan Eastman ,  Subramanyaravi Annapragada ,  Parmesh Verma ,  Joseph V. Mantese

    IPC分类号： F25B21/00

    摘要： A heat transfer system is disclosed including a plurality of modules arranged in a stack. The stack modules include electrocaloric element and electrodes on each side of the film. A fluid flow path is disposed between two or more electrocaloric elements. A first electrical bus element (18) in electrical contact with the first electrode (14), and a second electrical bus element (20) in electrical contact with second electrode (16). The first electrical bus element is electrically connected to at least one other electrical bus of another electrocaloric element in the stack at the same polarity as said first electrical bus, or the second electrical bus element is electrically connected to at least one other electrical bus of another electrocaloric element in the stack at the same polarity as said second electrical bus.

    ELECTROCALORIC HEAT TRANSFER SYSTEM
    9.
    发明申请
    ELECTROCALORIC HEAT TRANSFER SYSTEM 审中-公开

    公开(公告)号：US20190226727A1

    公开(公告)日：2019-07-25

    申请号：US16313766

    申请日：2016-06-27

    申请人： United Technologies Corporation

    发明人： Scott Alan Eastman ,  Sergei F. Burlatsky ,  Joseph V. Mantese ,  Wei Xie ,  Subramanyaravi Annapragada ,  Parmesh Verma ,  Vadim V. Atrazhev ,  Vadim I. Sultanov

    IPC分类号： F25B21/00 ,  C09K5/14

    摘要： An electrocaloric element for a heat transfer system includes an electrocaloric material of a copolymer of (i) vinylidene fluoride, (ii) an addition polymerization monomer selected from tetrafluoroethylene, trifluoroethylene, vinyl fluoride, or combinations thereof, and (iii) a halogenated addition polymerization monomer larger than vinylidene fluoride. It is also provided that: (a) the monomer (ii) includes an addition polymerization monomer smaller than trifluoroethylene, (b) at least one of the addition polymerization monomers (ii) or (iii) is a chiral monomer, and the copolymer includes syndiotactic ordered segments of chiral monomer units, and/or (c) at least one of the addition polymerization monomers (ii) or (iii) comprises chlorine, and the copolymer includes an ordered distribution of monomer units comprising chlorine along the copolymer polymer backbone.