| Title |
The Effects of Additives on the Cooling Characteristic of a Clathrate Compound |
| Keywords |
Clathrate compound ; 포접화합물 ; Phase change temperature ; 상변화온도 ; Supercooling ; 과냉도 ; Maintenance time of liquid phase ; 액상유지시간 ; Change rate of volume ; 체적변화율 |
| Abstract |
This study was performed 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℃. 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℃. Also the supercooling and the maintenance time of liquid phase were decreased by additives. Especially, the average value of supercooling showed by 8.8℃ and the maintenance time of liquid phase was by 19 minutes in the case of chloroform 0.1wt%. 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. |