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Effect of different injection vapor modes on the heating performance of the heat pump.

Number: pap. L28

Author(s) : LIU B., GU S., CHEN A., et al.

Summary

With the increasing smog in the north and the requirement of heating in the south of China, the heating system by the heat pump is paid more and more attentions. Three types of heat pump were experimentally compared including the one stage without injection vapor heat pump, the one stage injection vapor heat hump and the two-stages injection vapor heat pump with economizer. The results show that the heating capacity of all three types of heat pumps will continuously decrease with the decrease of the evaporation temperature, but the attenuation ratio of the heating capacity is different. The largest attenuation rate is 68.84% from the evaporating temperature -1°C to -23°C of the one stage heat pump, while the smallest attenuation rate is 31% from the evaporating temperature -1°C to -23°C of the two-stages injection vapor heat pump.The heating efficiency will be improved by the amount of the injection vapor. The two-stages injection vapor heat pump can enhance the heating efficiency 127% compared to the one stage without injection vapor heat pump and 13% compared to the one stage injection vapor heat pump at the evaporating temperature of -23°C.

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Pages: 11

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Details

  • Original title: Effect of different injection vapor modes on the heating performance of the heat pump.
  • Record ID : 30022051
  • Languages: English
  • Source: 8th international conference on compressors and refrigeration, 2017.
  • Publication date: 2017/07/20

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