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The Effect of Load Variation on the Performance of an Injection Heat Pump with an Economizer

이코너마이저 적용 열펌프 시스템의 부하변화에 따른 성능 특성 연구

  • Received : 2014.06.03
  • Accepted : 2014.07.03
  • Published : 2014.09.01

Abstract

Heat pumps have received a fair amount of attention all over the world for their high efficiency and low environmental impact. Employing heat pumps for residential heating and cooling produces only about 2038 kg-$CO_2$/year, an amount which is less than half that of conventional boiler systems. However, the use of single-stage heat pumps becomes uneconomical when they are operated at very low evaporating temperature or high condensing temperature. Two-stage heat pumps systems can be used successfully for low or high temperature applications. In this paper, the experimental study on the performance of two-stage heat pump with an economizer was executed in heating mode. When the secondary fluid inlet temperature to the indoor heat exchanger increased, the COP enhancement rate of two-stage heat pump with an economizer was increased. For all outdoor inlet temperature conditions, the performance of the heat pump with an economizer was higher than it without an economizer.

Keywords

Economizer;COP;Heat pump;Load

References

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Acknowledgement

Supported by : 농촌진흥청