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Investigation of the heat pump water heater using economizer vapour injection system and mixture of R22/R600a.

Author(s) : CAO F., WANG K., WANG S., et al.

Type of article: Article, IJR article

Summary

This paper presents the experimental study of a heat pump water heater (HPWH) using economizer vapour injection system and mixture of R22/R600a. Performances of HPWH using economizer vapour injection system are compared with that at different mixed mass ratios of R22/R600a. Study demonstrates that the heating capacity and energy efficiency ratio of the unit increased, and the discharge temperature of compressor decreased when using vapour injection and mixing refrigerant of R22/R600a. It is also found that the HPWH unit with economizer vapour injection system has a better performance for the high outlet water temperature under lower temperature conditions at 15% mass ratio of R600a for the mixing refrigerant. In addition, fundamental and practical influence of vapour injection pressure on the HPWH performance has been investigated experimentally. The simplified model is proposed for predicting the optimal vapour injection pressure of compressor using the mixing refrigerant R22/R600a.

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Pages: 509-514

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Details

  • Original title: Investigation of the heat pump water heater using economizer vapour injection system and mixture of R22/R600a.
  • Record ID : 2009-0836
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 3
  • Publication date: 2009/05

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