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A Study on Cooling Characteristics of Clathrate Compound with Concentration of TMA  

Kim Jin-Heung (Department of Mechanical Engineering, Chosun University)
Chung Nak-Kyu (Department of Mechanical Information Engineering, Chosun University)
Kim Chang-Oh (Department of Mechanical Design Engineering, Graduate School, Chosun University)
Publication Information
Journal of Energy Engineering / v.14, no.1, 2005 , pp. 18-23 More about this Journal
Abstract
This study is investigated the cooling characteristics of the TMA clathrate compound including TMA (Tri-methyl-amine, (CH₃)₃N) of 20～25 wt％ as a low temperature storage material at -5℃ heat source. The results showed that as the concentration of TMA is increased, phase change temperature and specific heat are increased, but the supercooling and retention time of liquid phase are decreased. Especially, low temperature storage material containing TMA 25 wt％ has the average of phase change temperature of 5.8℃, supercooling of 8.0℃, retention time of liquid phase for 10 minutes and specific heat of 4.099 kJ/kg℃ in the cooling process. From the results of this study, TMA clathrate compound showed higher phase change temperature than water md supercooling repression effect.
Keywords
Low temperature storage material; Clathrate compound; Cooling characteristic; Phase change temperature; Supercooling; Specific heat;
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