The Study on Cooling Characterics of TMA Clathrate with Ethanol

에탄올을 첨가한 TMA 포접화합물의 냉각특성에 대한 연구

  • 김창오 (조선대학교 대학원) ;
  • 김진흥 (조선대학교 공과대학 기계공학부) ;
  • 정낙규 (조선대학교 공과대학 기계공학부) ;
  • 김석현 (국민대학교 기계·자동차공학부)
  • Published : 2002.08.01

Abstract

The purpose of this study is to investigate the propriety of TMA clathrate as a cold storage medium. Particularly, this is to examine the extent of subcooling improvement when the additives is added to the TMA clathrate, because water used for cold storage ma terial has low phase change temperature and subcooling. This study has been analyzed and compared pure water with TMA 30 wt% clathrate how phase change temperature, subcooling and specific heat in the various concentrations are changed. This results prove low phase change temperature and subcooling control effect when the ethanol is added to the TMA 30 wt% clathrate than the TMA 30 wt% clathrate. In addition, it results low specific heat when there is added to the TMA 30 wt% clathrate over 0.5 wt% ethanol in the cold heat source temperature under $-7^{\circ}C$. The other side, it results high specific heat when the ethanol is added in it at the cold heat source temperature under $-5^{\circ}C$. Therefore, it is found that the additive must be controlled by available solution limit and study for new additive must be lasted to know its effect.

Keywords

References

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