Fabrication and characterization of phase change nanofluid with high thermophysical properties for thermal energy storage

文献类型： 外文期刊

第一作者： Ji, Jun

作者： Ji, Jun;Chen, Yue;Wang, Yinghui;Zhang, Xuelai;Tian, Zhen;Zhou, Sunxi;Zhou, Sunxi;Liu, Sheng

作者机构：

关键词： PAAS; MWCNT; Interfacial; Supercooling; Cold discharge

期刊名称：JOURNAL OF MOLECULAR LIQUIDS （ 影响因子：6.165； 五年影响因子：5.642 ）

ISSN： 0167-7322

年卷期： 2019 年 284 卷

页码：

收录情况： SCI

摘要： The thermophysical properties of water were modified by adding MWCNT and the organic PAAS. The effects of MWCNT and PAAS on supercooling degree and phase change characteristics of water were experimentally studied. The results showed that the length of the water phase change platform increases by 41% and decreases by 19.6% when concentration of PAAS is from 0 wt% to 2 wt% and 2 wt% to 5 wt%, respectively; The maximum supercooling degree declines up to 95% by adding MWCNT with the variations of particle size and concentration. The interfacial free energy at MWCNT outer diameter of 8-15 nm is approximately 1.75 and 2.14 larger than particle size of 20-40 nm and >50 nm. The temperature homogeneity of composite material is better than that of DW in application test, and the increased percentage of cold discharge time is less than that of the small dose experiments. The cold discharge time of the optimum PCM at top cold plate and other three positions are 81.8% and 35.3% higher than those of DW. (C) 2019 Elsevier B.V. All rights reserved.

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