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Experimental and Theoretical Study on the Cooling Performance of a CO 2 Mobile Air Conditioning System

Author

Listed:
  • Dandong Wang

    (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China)

  • Binbin Yu

    (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China)

  • Junye Shi

    (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
    Shanghai High Efficient Cooling System Research Center, Shanghai, 200240, China)

  • Jiangping Chen

    (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
    Shanghai High Efficient Cooling System Research Center, Shanghai, 200240, China)

Abstract

CO 2 (GWP = 1) is considered as a promising natural alternative refrigerant to HFC-134a in mobile air conditioning (MAC) applications. The objective of this study is to investigate the cooling performance characteristics of a CO 2 MAC system. A prototype CO 2 MAC system, consisting of a CO 2 electrical compressor, CO 2 parallel flow microchannel heat exchangers, and an electrical expansion valve, was developed and tested. Factor analysis experiments were conducted to reveal the effect of outdoor temperature on the cooling performance of this CO 2 MAC system. Compared with a conventional R134a MAC system, the prototype CO 2 MAC system achieved comparable cooling capacity, but had COP reductions of 26% and 10% at 27 °C and 45 °C outdoor conditions, respectively. In addition, based on refrigerant properties, theoretical cycle analysis was done to reveal the impact of evaporator, gas cooler and compressor, on the system cooling performance. It is concluded that the increase of overall compressor efficiency or the decrease of gas cooler approaching temperature could greatly improve the COP of this CO 2 MAC system.

Suggested Citation

  • Dandong Wang & Binbin Yu & Junye Shi & Jiangping Chen, 2018. "Experimental and Theoretical Study on the Cooling Performance of a CO 2 Mobile Air Conditioning System," Energies, MDPI, vol. 11(8), pages 1-13, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:1927-:d:159669
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    Citations

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    Cited by:

    1. Yu, Binbin & Yang, Jingye & Wang, Dandong & Shi, Junye & Chen, Jiangping, 2019. "An updated review of recent advances on modified technologies in transcritical CO2 refrigeration cycle," Energy, Elsevier, vol. 189(C).
    2. Yu, Binbin & Yang, Jingye & Wang, Dandong & Shi, Junye & Guo, Zhikai & Chen, Jiangping, 2019. "Experimental energetic analysis of CO2/R41 blends in automobile air-conditioning and heat pump systems," Applied Energy, Elsevier, vol. 239(C), pages 1142-1153.

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