암모니아 흡수식 열펌프의 Falling Film Type 흡수기에 대한 수학적 모델링 및 수치모사에 관한 연구

이찬호; 김성현; 현재천

Clean Technology, Vol.7, No.2, 151-159, June, 2001

Export Citation

암모니아 흡수식 열펌프의 Falling Film Type 흡수기에 대한 수학적 모델링 및 수치모사에 관한 연구

Mathematical modeling and numerical simulation studies for falling film type absorber in ammonia absorption heat pump

이찬호, 김성현, 현재천

초록

암모니아 흡수식 열펌프의 falling film type 흡수기에 대한 수학적 모델링 및 수치모사 연구를 수행하였다. 기존의 수학적 모델에 열역학적 물성을 온도의 함수로 적용하여 수치모사를 수행하였고 이로부터 얻은 결과를 실험결과와 비교함으로써 모델의 성능이 향상되는 것을 확인하였다. 그리고 개발된 모델을 이용하여 냉각수의 유량과 온도가 흡수기내에서 일어나는 열 및 물질전달에 미치는 영향을 평가하였다. 수치모사 결과로부터 냉각수 온도가 낮을수록 유량이 증가할수록 열 및 물질전달 효율이 증가하는 것을 알 수 있었다.

Mathematical modeling and numerical simulation studies have been conducted for a falling film type absorber of the ammonia absorption heat pump. A rigorous absorber model has been developed by considering temperature effects on physical properties and its predictability proved far superior to that of existing models, which has been confirmed by the experimental data. Using the developed model, effects of cooling water condition - temperature and flow rate - on the efficiency of absorber has been examined. As the result of simulation, the efficiency of absorber has increased as the cooling water temperature has decreased and flow rate has increased.

Keywords:Absorption heat pump;Falling film absorber;Ammonia Modeling;Numerical simulation;Cooling water effects

[References]

Gommed K, Grossman G, Koenig M, Proc. of Int. Sorption Heat Pump Conference, 275 (1999)
Cheon TS, Jeong ES, Air Conditioning Refrigeration, 12, 102 (2000)
Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases & Liquids," McGraw-Hill (1987)
Perry RH, Green D, "Perrys Chemical Engineers Handbook," McGraw-Hill (1984)
Sun DW, Energy Conv. Manag., 39(5-6), 357 (1998)
Grossman G, Int. J. Heat Mass Transf., 26, 357 (1983)
Patanka SV, "Numerical Heat Transfer and Fluid Flow," McGraw-Hill (1980)
Herold KE, Radermacher R, Klein SA, "Absorption Chiller and Heat Pumps," CRC Press (1996)
Lee KB, Master's Thesis, Department of Chemical Engineering, Korea University (2000)

[Referenced By]

[1] Gommed K, Grossman G, Koenig M, Proc. of Int. Sorption Heat Pump Conference, 275 (1999)

[2] Cheon TS, Jeong ES, Air Conditioning Refrigeration, 12, 102 (2000)

[3] Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases & Liquids," McGraw-Hill (1987)

[4] Perry RH, Green D, "Perrys Chemical Engineers Handbook," McGraw-Hill (1984)

[5] Sun DW, Energy Conv. Manag., 39(5-6), 357 (1998)

[6] Grossman G, Int. J. Heat Mass Transf., 26, 357 (1983)

[7] Patanka SV, "Numerical Heat Transfer and Fluid Flow," McGraw-Hill (1980)

[8] Herold KE, Radermacher R, Klein SA, "Absorption Chiller and Heat Pumps," CRC Press (1996)

[9] Lee KB, Master's Thesis, Department of Chemical Engineering, Korea University (2000)