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Research on vapor-injected rotary compressor through end-plate injection structure with check valve.

Number: pap. 1313

Author(s) : DING Y., WANG B., SHI W.

Summary

The refrigerant injection technology can improve the performance of heat pump in low ambient temperature. Traditional end-plate injection of rotary compressor controls the injection by the rotation of the piston, which leads to some drawbacks, such as small injection area and bad adaptability to variable working condition. By adopting a check valve system, a novel end-plate gas injection structure for rotary compressor had been put forward to increase injection port area and enhance the adaptability to variable working condition in previous research. In this paper, a vapor-injected rotary compressor prototype is manufactured and tested compared to single-stage and two-stage rotary compressor. The experimental results indicate that the vapor-injected compressor can enhance the heating capacity by 23.8~42.3% and COP by 4.0~11.8% compared to single-stage compressor. Furthermore, the influence of the parameters of the injection port are researched based on a numerical model verified by experimental results. The results show that the smaller injection port may decrease the power consumption obviously and increase COP, but has little effect on the heating capacity. So, there is an optimal injection port for the end-plate injection with check valve.

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Pages: 8

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Details

  • Original title: Research on vapor-injected rotary compressor through end-plate injection structure with check valve.
  • Record ID : 30024291
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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