Experimental investigation on discharging characteristics of supercooled sodium acetate trihydrate induced by local cooling

被引：0
|
作者：
Wang H. [1 ]
Zhou G. [1 ]
机构：
[1] School of Energy, Power and Mechanic Engineering, North China Electric Power University, Beijing
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 09期
关键词：
Crystallization; Local cooling; Phase change; Sodium acetate trihydrate; Solar energy; Stable supercooling; Water content;
D O I：
10.11949/0438-1157.20190401
中图分类号：
学科分类号：
摘要：
Experiments are performed on the effect of local cooling by thermoelectric cooler on triggering solidification of supercooled sodium acetate trihydrate (SAT). Factors such as the water content, the SAT sample mass as well as the input power of the thermoelectric cooler are examined about their effects on the crystallization activation and discharging characteristics. The results showed that with the increase of water content, the overall crystallization induction period increased, the heat release temperature decreased, and the water content of 44% was used as the ideal system ratio. The crystallization induction period was 2 min and the stable exothermic temperature was 52.8℃. The higher the input power(P) is, the faster the unit is cooled and the induction time period for P=280 W is one third of that for P=70 W. The probability of nucleation of samples is increased for higher sample mass and then the induction time is shorter with higher discharging temperature and longer heat release time. © All Right Reserved.
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页码：3346 / 3352
页数：6
相关论文
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