Electrocaloric cooling with electrostatic actuation

Patent · Tue Jul 26 04:00:00 EDT 2022

OSTI ID:1924926

Pei, Qibing; Ma, Rujun; Zhang, Ziyang; Kornbluh, Roy; Huber, David

A solid-state heat transporting device including a heat transporting element whose uniformity of contact with one or multiple surfaces is controllable so that various amounts of heat may be transported to and from the one or multiple surfaces. The heat transporting element uses the electrocaloric effect to absorb and release the heat and the uniformity of contact is controlled using an electrostatic effect which may change the shape of the heat transporting element. In one embodiment, the heat transporting element is an electrostatically actuated P(VDF-TrFE-CFE) polymer stack achieving a high specific cooling power of 2.8 W/g and a COP of 13 (the highest reported coefficient of performance to date) when used as a cooling device.

• Research Organization: Univ. of California, Oakland, CA (United States); SRI International, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E); US Air Force Office of Scientific Research (AFOSR)
• DOE Contract Number: AR0000532
• Assignee: The Regents of the University of California (Oakland, CA); SRI International (Menlo Park, CA)
• Patent Number(s): 11,397,031
• Application Number: 16/610,838
• OSTI ID: 1924926
• Country of Publication: United States
• Language: English

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