화학공학소재연구정보센터
Solar Energy, Vol.185, 245-254, 2019
Experimental assessment of solar absorption-subcooled compression hybrid cooling system
The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is to be the economically feasible solution for the high-rise building. But the system has been seldom studied experimentally in the existing open literatures. Therefore, the prototype of SASCHCS is developed to measure the operational performance. The absorption subsystem is driven by the 27 m(2) of stationary compound parabolic collector exclusively. And the test is based on the sunny day without and with fluctuation as well as cloudy day of subtropical Guangzhou. It is found that the outlet temperature of chilled water in the absorption chiller exceeds 22 degrees C since the cooling output of absorption subsystem serves as the subcooling power of compression subsystem. Consequently, the low grade solar energy of which temperature is higher than 60 degrees C can be used. The peak instantaneous cooling power and coefficient of performance (COP) of absorption subsystem is 4 kW and 0.69, respectively. Besides, the daily mean solar COP (SCOP) of absorption subsystem/daily average rise of COP in the compression subsystem on the sunny day, sunny day with fluctuation and cloudy day is 0.21/22.2%, 0.2/19.8% and 0.13/13.3%, respectively. The paper is helpful to adequately realize the real operation performance of SASCHCS and promote its further improvement.