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

Author

Listed:
  • Zhengrong Li

    (School of Mechanical Engineering, Tongji University, Shanghai 200092, China)

  • Yongheng Du

    (School of Mechanical Engineering, Tongji University, Shanghai 200092, China
    Henan Provincial Academy of Building Research Co., Ltd., Zhengzhou 450053, 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)

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.

Suggested Citation

  • Zhengrong Li & Yongheng Du & Yuqin Pan & Fan Zhang & Zhaofeng Meng & Yanan Zhang, 2022. "Experimental Performance Study of Solar-Assisted Enhanced Vapor Injection Air-Source Heat Pump System," Energies, MDPI, vol. 15(20), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7730-:d:947260
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    References listed on IDEAS

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    1. Wang, W. & Feng, Y.C. & Zhu, J.H. & Li, L.T. & Guo, Q.C. & Lu, W.P., 2013. "Performances of air source heat pump system for a kind of mal-defrost phenomenon appearing in moderate climate conditions," Applied Energy, Elsevier, vol. 112(C), pages 1138-1145.
    2. Wang, W. & Xiao, J. & Guo, Q.C. & Lu, W.P. & Feng, Y.C., 2011. "Field test investigation of the characteristics for the air source heat pump under two typical mal-defrost phenomena," Applied Energy, Elsevier, vol. 88(12), pages 4470-4480.
    3. Xu, Wei & Liu, Changping & Li, Angui & Li, Ji & Qiao, Biao, 2020. "Feasibility and performance study on hybrid air source heat pump system for ultra-low energy building in severe cold region of China," Renewable Energy, Elsevier, vol. 146(C), pages 2124-2133.
    4. Wang, Jijin & Qv, Dehu & Yao, Yang & Ni, Long, 2021. "The difference between vapor injection cycle with flash tank and intermediate heat exchanger for air source heat pump: An experimental and theoretical study," Energy, Elsevier, vol. 221(C).
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    Cited by:

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