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진병주(Byoung-Ju Jin),오승택(Seung-Taek Oh),윤정인(Jung-In Yoon),황준현(Jun-Hyeon Hwang),진심원(Sim-Won Jin),경익수(Ick-Soo Kyung),Donald C Erickson 대한설비공학회 2008 대한설비공학회 학술발표대회논문집 Vol.2008 No.2
Refrigeration plants using absorption principles have been around for many years with initial development taking place over 100 years ago. Although the majority of absorption cycles are based on water-LiBr cycle, many applications exist where ammoniawater can be used, especially where lower temperatures are desirable. In both systems water is used as working fluid, but in quite different ways: as a solvent for the ammonia system, and as refrigerant for the lithium bromide system. This explains that the lithium bromide absorption system is strictly limited to evaporation temperatures above 0℃. The main industrial applications for refrigeration are in the temperature range below 0℃, the field for the binary system ammonia-water.
이호생(Ho-Saeng Lee),진병주(Byoung-Ju Jin),윤정인(Jung-In Yoon),황준현(Jun-Hyeon Hwang),진심원(Sim-Won Jin),경익수(Ick-Soo Kyung),Donald C Erickson 대한설비공학회 2009 설비공학 논문집 Vol.21 No.8
Experimental results for performance characteristics of small H₃ absorption chiller/heater are presented. The apparatus consists of 7RT water-cooled absorption system, solution pump, boiler, cooling tower and peripheral devices. The effect of experimental parameters, such as refrigerant mass flow rate, solution mass flow rate and cooling water temperature have been investigated in view of the system performance. The capacity of each heat exchanger increased as refrigerant mass flow rate increased in cooling mode. Also, a cooling capacity increased as a strong solution mass flow rate increased. The cooling and heating COP show 0.5, 1.5 regardless of refrigerant mass flow rate, respectively. The results focus on the evaluation for performance characteristics of system with respect to variation of refrigerant mass flow rate under standard design conditions.