A Study on Improvement of the Physical Properties of 4 Component Working Fluid in Gas Fired Absorption Chillers

가스흡수식 냉방기용 4성분계 작동매체의 물성 향상 연구

  • 백영순 (한국가스공사 연구개발원) ;
  • 오영삼 (한국가스공사 연구개발원) ;
  • 이용원 (한국가스공사 연구개발원) ;
  • 박달령 (한국가스공사 연구개발원) ;
  • 구기갑 (서강대학교 화학공학과)
  • Received : 1998.11.17
  • Accepted : 1999.01.25
  • Published : 1999.05.10


In an effort to obtain high efficiency in gas fired absorption chillers, a new working fluid has been developed with thc addition of the component of $LiNO_3$, LiCl and LiI to the conventional solution of $LiBr-H_2O$. The solubility and vapor pressure of the 4 component working fluid developed in this work were measured and compared to the results of $LiBr-H_2O$ solution. It was observed that there exists an optimal mole ratio of the inorganic salts in terms of solubility. The mole ratio of LiBr, $LiNO_3$ and LiCl was found to be around 5:1:1~2 in the $LiBr-LiNO_3-LiCl-H_2O$ mixture, and in the case of $LiBr-LiO_3-Lil-H_2O$ and $LiBr-Lil-LiCl-H_2O$ mixtures, the mole ratio of LiBr, $LiNO_3$ and Lil/ LiBr, LiI and LiCl were found to be around 5:1:1 and 5:1:0.5~1 respectively. The vapor pressure of the 4 component working fluid of the optimal mole ratio was increascd with adding the component of $LiNO_3$, LiCl and LiI except for $LiBr-LiNO_3-LiCl-H_2O$ mixture. The absorption capacity of $LiBr-LiNO_3-LiCl-H_2O$ mixture was obtained higher than that of $LiBr-H_2O$ mixture.


Absorption Chiller;Lithium Bromide;Refrigeration;LiBr;Working Fluid


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