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Characteristics of an improved heat-pump cycle for cold regions

Author

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  • Ma, Guo-yuan
  • Chai, Qin-hu

Abstract

To increase the heating capacity of air-source heat-pump in cold regions, an improved heat pump cycle with scroll compressor economizer was developed. The measured results of the prototype demonstrate that it can provide a high temperature and high-capacity water supply even under a low ambient temperature of -10~-15 °C. The performances of the improved heat-pump cycle are comprehensively analyzed with aid of the proposed thermodynamic model in this paper. The design parameters and the components of the cycle are optimized and the predicted results. The predicted results discussed indicate that the improved heat pump has high efficiency under all weather conditions and that this improvement is conducive to enlarging the running region of the heat pump and providing an alternative heating service for cold regions.

Suggested Citation

  • Ma, Guo-yuan & Chai, Qin-hu, 2004. "Characteristics of an improved heat-pump cycle for cold regions," Applied Energy, Elsevier, vol. 77(3), pages 235-247, March.
    • Handle: RePEc:eee:appene:v:77:y:2004:i:3:p:235-247
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    Citations

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    Cited by:

    1. Qin, Fei & Zhang, Guiying & Xue, Qingfeng & Zou, Huiming & Tian, Changqing, 2017. "Experimental investigation and theoretical analysis of heat pump systems with two different injection portholes compressors for electric vehicles," Applied Energy, Elsevier, vol. 185(P2), pages 2085-2093.
    2. Hongzhi Liu & Katsunori Nagano & Takao Katsura & Yue Han, 2020. "Experimental Investigation on a Vapor Injection Heat Pump System with a Single-Stage Compressor," Energies, MDPI, vol. 13(12), pages 1-19, June.
    3. Redón, A. & Navarro-Peris, E. & Pitarch, M. & Gonzálvez-Macia, J. & Corberán, J.M., 2014. "Analysis and optimization of subcritical two-stage vapor injection heat pump systems," Applied Energy, Elsevier, vol. 124(C), pages 231-240.
    4. Self, Stuart J. & Reddy, Bale V. & Rosen, Marc A., 2013. "Geothermal heat pump systems: Status review and comparison with other heating options," Applied Energy, Elsevier, vol. 101(C), pages 341-348.
    5. Zhang, Long & Jiang, Yiqiang & Dong, Jiankai & Yao, Yang, 2018. "Advances in vapor compression air source heat pump system in cold regions: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 353-365.
    6. Mendoza, Luis Carlos & Lemofouet, Sylvain & Schiffmann, Jürg, 2017. "Testing and modelling of a novel oil-free co-rotating scroll machine with water injection," Applied Energy, Elsevier, vol. 185(P1), pages 201-213.
    7. Ko, Younghwan & Park, Sangkyoung & Jin, Simon & Kim, Byungsoon & Jeong, Ji Hwan, 2013. "The selection of volume ratio of two-stage rotary compressor and its effects on air-to-water heat pump with flash tank cycle," Applied Energy, Elsevier, vol. 104(C), pages 187-196.

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