에틸렌글리콜 첨가에 의한 LiBr계 흡수 용액의 증기 흡수 성능 향상 효과

이용원; 백영순; 오영삼; 조원일; Yong Won Lee; Youngsoon Baek; Young Sam Oh; Wonihl Cho

Journal of the Korean Industrial and Engineering Chemistry, Vol.12, No.4, 449-454, June, 2001

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에틸렌글리콜 첨가에 의한 LiBr계 흡수 용액의 증기 흡수 성능 향상 효과

Effect of Ethylene Glycol Addition on Vapor Absorption Enhancement of Working Fluids in a LiBr/H2O Absorption Chiller

이용원, 백영순 ^†, 오영삼, 조원일

한국가스공사 연구개발원

Yong Won Lee, Youngsoon Baek^†, Young Sam Oh, and Wonihl Cho

KOGAS, Korea

E-mail:

초록

흡수식 냉방기에서 증기 흡수용액으로 사용되고 있는 LiBr+H2O 용액의 성능 향상을 위하여 LiBr+LiNO3+LiCl+H2O 용액에 에틸렌글리콜을 무게비로 5% 첨가하여 용해도, 증기압을 측정하였다. 에틸렌글리콜 첨가효과를 측정한 결과 에틸렌글리콜을 첨가하지 않은 경우와 비교하여 용해도가 상승하고 증기압은 저하되었다. 수직관 흡수기에서 LiBr+H2O, LiBr+LiNO3+LiCl+H2O 용액에 에틸렌글리콜을 첨가하여 증기흡수능력을 시험한 결과 무첨가 시와 비교하여 증기 흡수능력이 약 10 ~ 15% 향상되었다. LiBr+H2O 용액의 에틸렌글리콜 최적 첨가량은 무게비로 5 ~ 10% 범위인 것으로 나타났다.

Solubility and vapor pressure of LiBr+LiNO3+LiCl+H2O solution with 5wt% of ethylene glycol were measured. The addition of ethylene glycol was to enhance the performance of LiBr+H2O solution, which is commonly used as the vapor absorbent in an absorption chiller. Experimental results shewed that the solubility was increased and the vapor pressure was lowered compare to the case without ethylene glycol. The effect of ethylene glycol on the vapor absorption were tested in both LiBr+H2O and LiBr+LiNO3+LiCl+H2O solutions under the same conditions.The experimetal data showed that the vapor absorption performance was enhanced from 10 to 15% in both LiBr+H2O and LiBr+LiNO3+LiCl+H2O solutions by adding 5 wt% of ethylene glycol. The optimal ethylene glycol to LiBr+H2O solution was in the range of 5 to 10 wt%

Keywords:LiBr;LiNO3;LiCl;ethylene glycol;absorption chiller;vertical tube absorber

[References]

植村正, "各作動媒體の硏究動向", 冷凍, 68(789), 699 (1993)
小關康雄, 伊藤和利, 利道雅彦, 高僑燦吉, "LiBr-CaCl2 混合吸收劑を用ぃた吸收冷凍機の空冷化" 日本空氣調和, 衛生工學會論文集, 10(47), 51 (1991)
Ju WS, Kim HT, Oh YS, Baek YS, J. Korean Ind. Eng. Chem., 9(1), 82 (1998)
Eisa MAR, Diggory PJ, Holland FA, Int. J. Energy Res., 12, 459 (1988)
Miller WA, Perez-Blanco H, International Absorption Heat Pump Conference ASME, 31, 185 (1993)
Kashiwagi T, Kurosaki Y, Shishido H, Trans. JSME B51, 1002 (1985)
Hozawa M, Inoue M, Sato J, Tsukada T, Imaishi N, J. Chem. Eng., 24(209), 214 (1991)
Kim KJ, Berman NS, Wood BD, AIChE J., 42(3), 884 (1996)
Hihara E, Saito T, Int. J. Refrig., 16(5), 339 (1993)
Clynee MA, Potter RW, J. Chem. Eng. Data, 24, 338 (1983)
Boryta DA, J. Chem. Eng. Data, 15, 142 (1970)
Scatchard G, Raymond CL, Gilmann HH, J. Am. Chem. Soc., 62, 1275 (1938)

[Related Articles]

[1] 植村正, "各作動媒體の硏究動向", 冷凍, 68(789), 699 (1993)

[2] 小關康雄, 伊藤和利, 利道雅彦, 高僑燦吉, "LiBr-CaCl2 混合吸收劑を用ぃた吸收冷凍機の空冷化" 日本空氣調和, 衛生工學會論文集, 10(47), 51 (1991)

[3] Ju WS, Kim HT, Oh YS, Baek YS, J. Korean Ind. Eng. Chem., 9(1), 82 (1998)

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

[5] Miller WA, Perez-Blanco H, International Absorption Heat Pump Conference ASME, 31, 185 (1993)

[6] Kashiwagi T, Kurosaki Y, Shishido H, Trans. JSME B51, 1002 (1985)

[7] Hozawa M, Inoue M, Sato J, Tsukada T, Imaishi N, J. Chem. Eng., 24(209), 214 (1991)

[8] Kim KJ, Berman NS, Wood BD, AIChE J., 42(3), 884 (1996)

[9] Hihara E, Saito T, Int. J. Refrig., 16(5), 339 (1993)

[10] Clynee MA, Potter RW, J. Chem. Eng. Data, 24, 338 (1983)

[11] Boryta DA, J. Chem. Eng. Data, 15, 142 (1970)

[12] Scatchard G, Raymond CL, Gilmann HH, J. Am. Chem. Soc., 62, 1275 (1938)