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Heating Performance Characteristics of an Electric Vehicle Heat Pump Air Conditioning System Based on Exergy Analysis

Author

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  • Xingwang Tang

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
    College of Automotive Engineering, Jilin University, Changchun 130025, China)

  • Qin Guo

    (College of Computer Science and Technology, Jilin University, Changchun 130025, China)

  • Ming Li

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
    College of Automotive Engineering, Jilin University, Changchun 130025, China)

  • Mingzhe Jiang

    (FAWER Hanon Thermal Systems (Changchun) Company Ltd., Changchun 130011, China)

Abstract

In this paper, a heat pump air conditioning system (HPACS) with refrigerant R134a based on the functional requirements of battery electric vehicle is designed and tested. Experiments were conducted to evaluate the effects of different ambient temperature, air flow rate of internal condenser, expansion valve (EXV) opening and compressor speed. The results demonstrate that air flow rate of internal condenser, EXV opening and compressor speed have important impact on heating capacity, compressor power consumption and coefficient of performance (COP) under several ambient temperatures. To verify the HPACS can also provide the heating capacity required by the battery electric vehicle cabin in cold climate, the system was also tested under a −5 °C ambient temperature, it was found that the heating capacity is 3.6 kW and the COP is 3.2, demonstrating that the system has high energy efficiency. In addition, heating process analysis of the HPACS under lower temperature is studied by exergy principle. The results indicate that compressor is the highest exergy destruction in all components, accounting for 55%. The percentage of exergy destruction in other components is about 28%, 12% and 5% for the expansive valve, condenser, and evaporator. Furthermore, air flow rate of internal condenser, ambient temperature and expansion valve opening have important impact on exergy destruction and exergy efficiency of the HPACS.

Suggested Citation

  • Xingwang Tang & Qin Guo & Ming Li & Mingzhe Jiang, 2020. "Heating Performance Characteristics of an Electric Vehicle Heat Pump Air Conditioning System Based on Exergy Analysis," Energies, MDPI, vol. 13(11), pages 1-14, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:11:p:2868-:d:367471
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    References listed on IDEAS

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    Cited by:

    1. Zhang, Nan & Lu, Yiji & Ouderji, Zahra Hajabdollahi & Yu, Zhibin, 2023. "Review of heat pump integrated energy systems for future zero-emission vehicles," Energy, Elsevier, vol. 273(C).
    2. Tong-Bou Chang & Jer-Jia Sheu & Jhong-Wei Huang, 2020. "High-Efficiency HVAC System with Defog/Dehumidification Function for Electric Vehicles," Energies, MDPI, vol. 14(1), pages 1-12, December.

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