Performance study on expand graphite/organic composite phase change material for cold thermal energy storage
文献类型： 外文期刊
作者： Zhou Sunxi 1 ; Zhang Xuelai 1 ; Liu Sheng 2 ; Li Yuyang 1 ; Xu Xiaofeng 1 ;
作者机构： 1.Shanghai Maritime Univ, Cool Storage Technol Inst, Shanghai 201306, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Vegetable Res Ctr, Beijing 100097, Peoples R China
关键词： phase change materials;thermal conductivity; organic; cyclic stability; cold storage
期刊名称：INNOVATIVE SOLUTIONS FOR ENERGY TRANSITIONS
ISSN： 1876-6102
年卷期： 2019 年 158 卷
页码：
收录情况： SCI
摘要： Octanoic-myristic acid binary eutectic mixture (OA-MA) was prepared as a base liquid. A novel shaped composite PCM of OAMA/expanded graphite (EG) with an optimum mass ratio (OA-MA:EG=93:7) was prepared by uniformly absorbing OA-MA into the porous structure of the EG. The micro structure was observed by scanning electronic microscopy (SEM). The phase change temperature and latent heat were measured by DSC.The thermal conductivity was measured by Hot Disk thermal constant analyzer. Besides, the thermal cycling tests was carried out for 100 times to validate the stability of OA-MA/EG. The phase change temperature of OA-MA was 7.1 degrees C, the latent heat was 146.1 J/g, and the thermal conductivity was 0.2971 W/(m.K). After adding the 7 % EG, the phase change temperature of OA-MA/EG was 6.8 degrees C, the latent heat was 136.3 J/g, and the thermal conductivity was 0.9975 W/(m.K), 2.36 times higher than OA-MA. The thermal cycling tests showed that OA-MA/EG composite PCM has a good thermal reliability. All the results show that the composite PCM has great prospect in the practical application to medical refrigerated transportation system which temperature range is 2-8 degrees C. (C) 2019 The Authors. Published by Elsevier Ltd.
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