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Optimization analysis on the performance of a vapor injection air-source heat pump with single screw compressor.

Number: pap. n. 701

Author(s) : LIU S., LU Y., WU Y., et al.

Summary

Adopting an economized vapor injection compressor can improve the heating capacity and energy efficiency ratio of the heat pump system at low environment temperature. In this paper, a kind of new vapor injection port structure located at the surface of slide valve was proposed based on the single screw compressor, so the vapor injection technology also can be used under part load condition and we proposed a new kind of single slide valve structure called compound slide valve to adjust the capacity and internal volume ratio of compressor simultaneously. A new mathematical method was presented to study the vapor injection process. The actual capacity and internal volume ratio at different slide valve working locations can be determined. The pressure, temperature and mass of the working medium in the control volume are calculated in this study. The mathematical expression of the injection region envelope is also presented in this paper.

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Pages: 8

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Details

  • Original title: Optimization analysis on the performance of a vapor injection air-source heat pump with single screw compressor.
  • Record ID : 30026022
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0701

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