| Title |
Simulation and Experimental Study onan Air-Cooled NH3/H2O Absorption Chiller |
| Keywords |
Air-cooled absorption chiller ; 공랭형 흡수식 냉동기 ; Ammonia-water ; 암모니아-물 ; Ambient temperature ; 외기온도 ; Cooling air mass flow rate ; 냉각공기 유량 |
| Abstract |
The objective of this paper is to study the effects of the cooling air mass flow rate and the heat input variation by the simulation and the experiment. An air-cooled NH3/H2O absorption chiller is tested in the present study. The nominal cooling capacity of the single effect machine is 17.6kW(5.0USRT). The overall conductance(UA) of each component, the cooling capacity, coefficient of performance and each state point are measured with the varia-tion of the cooling air mass flow rate and the heat input. It is found that the COP and cool-ing capacity increase and then decreases with increasing the heat input. It is also found that the COP and the cooling capacity increase and keep constant with increasing the cooling air mass flow rate. The maximum COP is estimated as 0.51 and the optimum cooling air mass flow rate is 217m3/min from the present experiment. |