흡수식냉난방기용 다성분 리튬염 작동매체의 증기압 및 용해도 측정

주우성; 김희택; 오영삼; 백영순

Journal of the Korean Industrial and Engineering Chemistry, Vol.9, No.1, 82-88, February, 1998

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흡수식냉난방기용 다성분 리튬염 작동매체의 증기압 및 용해도 측정

Measurement and Analysis on the Physical Properties of Multi Lithium Salts Solution in Absorption Heat-Pumps

주우성, 김희택, 오영삼, 백영순

초록

고효율 공냉형 흡수식 냉방기를 위한 신작동매체로 기존의 LiBr-H₂O계에 높은 흡수성과 용해성를 지닌 LiNO₃과 LiCl 무기물을 각각 첨가하여 제조하였다. 본 연구를 통하여 제조된 다성분계의 작동매체에 대한 용해도와 증기압을 측정하여 LiBr-H₂O계와 비교 분석하였으며, 이들에 대한 최적혼합비를 각각 구하였다. 용해도 측면에서 LiBr-LiNO₃-H₂O계의 경우, LiBr과 LiNO₃의 최적혼합 몰비는 5:1이었으며, 반면 LiBr-LiNO₃-LiCl-H₂O계의 경우 LiBr, LiNO₃, LiCl의 최적혼합몰비는 5:1:2로 나타났다. 한편 증기압은 LiBr-H₂O계에 LiNO₃의 첨가량이 증가하였으나, LiCl의 경우에는 첨가량이 증가함에 따라 감소하는 경향을 각각 나타내었다.

In an effort to obtain high efficiency in air cooled absorption heat pump, a new working fluid has developed with the addition of LiNO₃ and LiCl to the conventional solution of LiBr-H₂O. The solubility and vapor pressure of the multicomponent salts solution developed in this work were measured and dompared with the results of LiBr-H₂O solution. It was observed that there exists an optimal molar ratio of the inorganic salts in terms of solubility. The molar ratio of LiBr, LiNO₃ and LiCl was found to be about 5:1 in the LiBr-LiNO₃ mixture, and in the case of LiBr-LiNO₃-LiCl mixture, the molar ratio of LiBr, LiNO₃ and LiCl was found to be around 5:1:2. The vapor pressure of the multicomponent salts solution of the optimal molar ratio was increased with adding LiNO₃, while decreased with adding LiCl.

[References]

Iyoki S, Yamanaka R, Uemura T, J. Chem. Eng. Data, 38(3), 396 (1993)
Lee RJ, Diguilio RM, Jeter SM, Teja AS, ASHRAE Research Profect, 3381 (527-RP), 709 (PR-527)
Eikassabgi YM, Perez-Blanco H, ASHRAE Research Project, 3534, 403 (RP-527)
Chaudhari SK, Paranjape DV, Eisa MAR, Holland FA, J. Heat Recov. Syst., 5, 285 (1985)
Eisa MAR, Diggory PJ, Holland FA, Int. J. Energy Res., 12, 459 (1988)
ASHRAE Handbook of Fundamentals, American Society of Heating Refrigerating, and Air-Condition Engineers. Atlanta (1989)
Iyoki S, Yamanaka R, Uemura T, Int. J. Refrig, 16(3), 191 (1993)
Perry RH, Green D, "Perry's Handbook 6th Edition," 3-45, McGraw-Hill International Edition (1984)
Patil KR, Tripathi AD, Pathak G, Katti SS, J. Chem. Eng. Data, 35(2), 1668 (1993)
Patil KR, Chaudhari SK, Katti SS, J. Chem. Eng. Data, 37(1), 136 (1992)
Lide DR, "CRc Handbook of Chemistry & Physics," 74th edition, 4-69 (1993)
Park Y, Kim JS, Lee H, Theor. Appl. Chem. Eng., 2(1), 753 (1996)

[Referenced By]

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

[2] Lee RJ, Diguilio RM, Jeter SM, Teja AS, ASHRAE Research Profect, 3381 (527-RP), 709 (PR-527)

[3] Eikassabgi YM, Perez-Blanco H, ASHRAE Research Project, 3534, 403 (RP-527)

[4] Chaudhari SK, Paranjape DV, Eisa MAR, Holland FA, J. Heat Recov. Syst., 5, 285 (1985)

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

[6] ASHRAE Handbook of Fundamentals, American Society of Heating Refrigerating, and Air-Condition Engineers. Atlanta (1989)

[7] Iyoki S, Yamanaka R, Uemura T, Int. J. Refrig, 16(3), 191 (1993)

[8] Perry RH, Green D, "Perry's Handbook 6th Edition," 3-45, McGraw-Hill International Edition (1984)

[9] Patil KR, Tripathi AD, Pathak G, Katti SS, J. Chem. Eng. Data, 35(2), 1668 (1993)

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

[11] Lide DR, "CRc Handbook of Chemistry & Physics," 74th edition, 4-69 (1993)

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