가스흡수식 냉방기용 4성분계 작동매체의 물성 향상 연구

백영순; 오영삼; 이용원; 박달령; 구기갑

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.3, 400-406, May, 1999

Export Citation

가스흡수식 냉방기용 4성분계 작동매체의 물성 향상 연구

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

백영순, 오영삼, 이용원, 박달령, 구기갑

초록

고효율 가스흡수식 냉방기를 위한 신 작동매체로 기존의 LiBr-H₂O 용액에 LiNO₃, LiCl, LiI 성분을 첨가하여 4성분 용액을 제조하였다. 본 연구를 통하여 제조된 4성분계의 작동매체에 대한 용해도와 증기압을 측정하여 기존의 LiBr-H₂O 계와 비교 분석하였으며, 이들에 대한 최적혼합 몰비를 각각 구하였다. 용해도 측면에서 LiBr-LiNO₃-LiCl계는 5:1:1∼2, LiBr-LiNO₃-LiI계는 5:1:1, LiBr-LiI-LiCl계의 경우 5:1:0.5∼1로 나타났다. 한편 LiBr-LiNO₃-LiCl-H₂O계를 제외하고 모두 증기압이 LiBr-H₂O계에 비해 높게 나타났다. LiBr-LiNO₃-LiCl-H₂O 계를 이용한 흡수성능 실험시 LiBr-H₂O계 보다 우수한 특성을 지녔다.

In an effort to obtain high efficiency in gas fired absorption chillers, a new working fluid has been developed with the addition of the component of LiNO₃, LiCl and LiI to the conventional solution of LiBr-H₂O. The solubility and vapor pressure of the 4 component working fluid developed in this work were measured and compared to the results of LiBr-H₂O solution. It was observed that there exists an optimal mole ratio of the inorganic salts in terms of solubility. The mole ratio of LiBr, LiNO₃ and LiCl was found to be around 5:1:1∼2 in the LiBr-LiNO₃-LiCl-H₂O mixture, and in the case of LiBr-LiNO₃-LiI-H₂O and LiBr-LiI-LiCl-H₂O mixtures, the mole ratio of LiBr, LiNO₃ and LiI/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 increased with adding the component of LiNO₃, LiCl and LiI except for LiBr-LiNO₃-LiCl-H₂O mixture. The absorption capacity of LiBr-LiNO₃-LiCl-H₂O mixture was obtained higher than that of LiBr-H₂O mixture.

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

[References]

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[1] Iyoki S, Yamanaka R, Uemura T, J. Chem. Eng. Data, 38(3), 396 (1993)

[2] Lee RJ, DiGuilio RM, Teja AS, ASHRAE Research Project 527-RP, 709 (1986)

[3] Jung SH, Sgamboti C, Perez-Blanco H, Int. Absorption Heat Pump Conference, 31, 49 (1993)

[4] Eisa MAR, Diggory PJ, Holland FA, Int. J. Energy Res., 12, 459 (1988)

[5] Iiwuka H, Takhashi J, Takigawa, Int. Gas Res. Conference, 868 (1989)

[6] ASHRAE Handbook Fundamentals, SI Edition, 17.81-17.83 (1993)

[7] Iyoki S, Iwasaki S, Uemura T, J. Chem. Eng. Data, 35(4), 429 (1990)

[8] Robert H, Perry DG, Handbook 6th Edition, McGraw-Hill International Edition, 3-45~3-46 (1984)

[9] Kashinath RP, Tripathi AD, Pathak G, Katti SS, J. Chem. Eng. Data, 35(2), 166 (1990)

[10] Kashinath RP, Chaudhari SK, Katti SS, J. Chem. Eng. Data, 37(1), 136 (1992)

[11] 주우성, 김희택, 오영삼, 백영순, 한국공업화학회, 9, 82 (1998)

[12] 小關康雄, 高橋木桀吉, 化學工學論文集第17卷第2號, 281 (1991)

[13] Park Y, Kim JS, Lee H, Theor. Appl. Chem. Eng., 2(1), 753 (1996)