Experimental assessment of solar absorption-subcooled compression hybrid cooling system. (June 2019)

• Record Type: Journal Article
• Authors: Yu, Jianting; Li, Zeyu; Chen, Erjian; Xu, Yongrui; Chen, Hongkai; Wang, Le
• Is Part Of: Solar energy. Volume 185(2019)
• Page Start: 245
• Page End: 254
• Publication Date: 2019-06
• Subjects: Solar cooling -- Experiment -- Absorption -- Subcooled compression -- Hybrid system; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2019.04.055
• Languages: English
• ISSNs: 0038-092X

Abstract

Highlights: The prototype of SASCHCS is developed and tested for different typical days. Fluctuation of solar irradiance slightly lowers the performance of hybrid system. Daily average COP of absorption subsystem in sunny/cloudy day is 0.52/0.47. Daily mean SCOP of absorption subsystem in sunny/cloudy day is 0.2/0.13. Daily mean rise of COP in compression subsystem at sunny/cloudy day is 22.2%/13.3%. Abstract: 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 °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 °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.