Experimental Performance Study of Solar-Assisted Enhanced Vapor Injection Air-Source Heat Pump System

Zhengrong Li, Yongheng Du (), Yuqin Pan, Fan Zhang, Zhaofeng Meng () and Yanan Zhang
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Zhengrong Li: School of Mechanical Engineering, Tongji University, Shanghai 200092, China
Yongheng Du: School of Mechanical Engineering, Tongji University, Shanghai 200092, China
Yuqin Pan: Henan Provincial Academy of Building Research Co., Ltd., Zhengzhou 450053, China
Fan Zhang: School of Energy and Environmental, Zhongyuan University of Technology, Zhengzhou 450007, China
Zhaofeng Meng: School of Energy and Environmental, Zhongyuan University of Technology, Zhengzhou 450007, China
Yanan Zhang: Henan Provincial Academy of Building Research Co., Ltd., Zhengzhou 450053, China

Energies, 2022, vol. 15, issue 20, 1-15

Abstract: In this paper, a solar-assisted enhanced vapor injection air-source heat pump (SC-EVIHP) system was built to investigate its heating performance in cold regions. A typical-weather day in Harbin was selected for the experiment, and the heating characteristics of the SC-EVIHP system were explored under variable working conditions. The experimental results showed that the system was greatly affected by solar radiation intensity. On typical-weather days in winter, the maximum values for the heating capacity and COP of the system appeared at the time of maximum radiation intensity. Compared with conventional enhanced vapor injection air-source heat pump systems (EVI-ASHPs), the heating capacity and COP were increased by 24.9% and 12.5% at most, respectively. The COP of the system increased by at most 11.1% under conditions where the outdoor temperature was −12 °C and the outlet hot air temperature of the solar air collector was 40 °C. The SC-EVIHP system works well in a low-temperature environment and can be widely applied in cold regions.

Keywords: air-source heat pump; solar-air collector; enhanced vapor injection; COP (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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