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Development of a New-Type Multiple-Source Heat Pump with Two-Stage Compression

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Abstract

A new-type multiple-source heat pump cycle with two-stage compression was established on the basis of the problems of similarly existing heat pumps. The equivalent temperature levels of typical evaporators are applied to the different heat sources of the proposed cycle, and the high-temperature heat sources are shown to enhance vapor injection. Then, the mathematical model and prototype are developed, and the results from experimental simulation and validation showed that the solar collector can improve the heating performance of the proposed heat pump system. In the middle-temperature heating period, the outdoor temperature is less than −25°C, and the average coefficient of performance (COP) value of the proposed heat pump was 4.2, which was greater than the COPs of conventional ground source heat pumps.

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Acknowledgements

The work was supported by the Natural Science Foundation of Beijing Municipality (3172040) and National Natural Science Foundation (51736008) and Strategic Priority Research Program of the Chinese Academy of Sciences (XDA21050600).

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Authors and Affiliations

  1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China

    Xiaohui Zhong, Ke Yang & Jianzhong Xu

  2. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan, 063009, China

    Xiaohui Zhong & Hailong Yang

Authors
  1. Xiaohui Zhong
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  2. Hailong Yang
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  3. Ke Yang
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  4. Jianzhong Xu
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Correspondence to Xiaohui Zhong.

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Zhong, X., Yang, H., Yang, K. et al. Development of a New-Type Multiple-Source Heat Pump with Two-Stage Compression. J. Therm. Sci. 28, 635–642 (2019). https://doi.org/10.1007/s11630-019-1103-y

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  • DOI: https://doi.org/10.1007/s11630-019-1103-y

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