Effect of Supercooling on the Solidification Process of the Phase Change Material

被引：26

作者：

Hu, Huoyan ^{[1
]}

Jin, Xing ^{[2
]}

Zhang, Xiaosong ^{[1
]}

机构：

[1] Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China

[2] Southeast Univ, Sch Architecture, Nanjing 210096, Jiangsu, Peoples R China

来源：

8TH INTERNATIONAL CONFERENCE ON APPLIED ENERGY (ICAE2016) | 2017年 / 105卷

关键词：

phase change material; supercooling; the model of heat transfer; equivalent specific heat capacity; THERMAL-ENERGY STORAGE; BUILDINGS; PCM;

D O I：

10.1016/j.egypro.2017.03.905

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Some phase change materials (PCMs), such as salt hydrate, have the problem of supercooling. However, the effect of supercooling on the solidification process of PCM was usually ignored in the previous numerical researches, which would affect the accuracy of the results. To figure out the effect of supercooling on the solidification process of PCM, a mathematical heat transfer model of PCM was established in this paper and it was verified. The results showed that the supercooling degree of PCM is larger, the starting time of its solidification process would be later and the temperature of PCM would be lower; Before the phase transition, the maximum heat flux increases with the increase of supercooling degree. However, the maximum heat flux during the whole solidification process decreases with the increase of supercooling degree. Therefore, for some PCMs with high supercooling degree, the neglect of the effect of supercooling will bring significant errors to the (C) 2017 Published by Elsevier Ltd.

引用

页数：7

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