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The Effects of Additives on the Cooling Characteristic of a Clathrate Compound  

Kim Jin Heung (Department of Mechanical Engineering, Chosun University)
Chung Nak Kyu (Department of Mechanical information Engineering, Chosun University)
Kim Suk Hyun (Department of Mechanical & Automotive, Kookmin University)
Kim Chang Oh (Department of Mechanical Design Engineering, Graduate School, Chosun University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.17, no.2, 2005 , pp. 125-130 More about this Journal
Abstract
This study was peformed to investigate the phase change temperature, the supercooling, the maintenance time of liquid phase and the change rate of volume of TMA 30 $wt\% clathrate compound with additives. TMA 30 $wt\% clathrate compound with additive was cooled at heat source temperature of $-6^{circ}C$. The additives are ethylene glycol and chloroform. Their concentration are 0.1$wt\% respectively. The experimental results showed that the phase change temperature was not affected by additives and this was average $5.3^{circ}C$. Also the supercooling and the maintenance time of liquid phase were decreased by additives. Especially, the average value of supercooling showed by $8.8^{circ}C$ and the maintenance time of liquid phase was by 19 minutes in the case of chloroform 0.1$wt\%. Additionally, the average change rate of volume showed by $1.26{\~}1.31\%$ according to additives and the volume was decreased by the phase change from liquid to solid.
Keywords
Clathrate compound; Phase change temperature; Super-cooling; Maintenance time of liquid phase; Change rate of volume;
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  • Reference
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