期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 14, 期 2, 页码 184-189出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/14/2/305
关键词
thermophysical properties; PCM (phase change material); LTES (latent thermal energy storage); T-history method
The temperature-history method, proposed by Yinping et al, is a simple and economic way to determine the main thermophysical properties of materials used in thermal energy storage based on solid-liquid phase change. It is based on comparing the temperature history of a phase-change material sample and a sample of a well known material upon cooling down. In this paper we describe a further developed evaluation procedure to determine c(p) and h as temperature dependent values which was not the case in Yinping's method, based on the same experimental procedure. Given the suitability of these properties to calculate thermal energy storage using these materials, the method is proposed to present the results obtained in the form of enthalpy-temperature curves. A discussion about the errors produced by this method and an experimental improvement are proposed too.
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