期刊
ENERGY CONVERSION AND MANAGEMENT
卷 43, 期 17, 页码 2319-2327出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0196-8904(01)00183-2
关键词
electrocaloric refrigeration cycle; dielectric material; specific heat; regenerative characteristic
The thermodynamic properties of the dielectric materials are analyzed in detail, based on the Curie law, Curie-Weiss law and other relations between the electrical polarization and the electric field strength. It is proven that the specific heat at constant electrical polarization is only a function of temperature, while the specific heat at constant electric field strength is dependent on the electric field strength and temperature. Moreover, the regenerative characteristics of the electrocaloric Stirling and Ericsson refrigeration cycles are discussed. Some important conclusions are obtained. (C) 2002 Published by Elsevier Science Ltd.
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