An electrocaloric refrigerator without external regenerator

Haiming Gu, Xiao Shi Qian, Hui Jian Ye, Qiming Zhang

    Research output: Contribution to journalArticle

    35 Scopus citations

    Abstract

    Regeneration processes are commonly used in cooling devices to improve the device performance. However, irreversible heat loss within the regenerators in many earlier designs of magnetocaloric and electrocaloric (EC) based cooling devices reduces the device performance. In this paper, an electrocaloric based refrigerator without external regenerators is proposed and studied. The regeneration process in this device is realized by direct heat exchange between contacting EC elements which are moving in opposite directions with different applied fields. Simulation results show that a 37 W/cm3 cooling power density is obtained for a Tspan of 20 K while the refrigerator still maintains 57% of Carnot efficiency for a cooling device made of an EC polymer.

    Original languageEnglish (US)
    Article number162905
    JournalApplied Physics Letters
    Volume105
    Issue number16
    DOIs
    StatePublished - Oct 20 2014

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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