公开(公告)号：US20190170409A1

公开(公告)日：2019-06-06

申请号：US16313762

申请日：2016-06-27

Applicant: United Technologies Corporation

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

IPC: F25B21/00 ,  H01L37/02

Abstract: 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.

公开(公告)号：US20170268805A1

公开(公告)日：2017-09-21

申请号：US15532242

申请日：2014-12-04

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Thomas D. Radcliff ,  Joseph V. Mantese ,  Subramanyaravi Annapragada ,  Michael J. Birnkrant ,  Andrzej Ernest Kuczek ,  Ram Ranjan ,  Parmesh Verma ,  Matthew Robert Pearson

IPC: F25B21/00

CPC classification number: F25B21/00 ,  F25B2321/001 ,  Y02B30/52 ,  Y02B30/66

Abstract: Heat pump cycle provided with a fluidic loop connecting two heat exchangers. The fluidic loop is filled with an electro-caloric liquid as a heat transfer medium. Applying electric filed in one of the heat exchangers the temperature of the electro-caloric liquid is changed.