Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Performance of the Geothermal Heat Pump using Vapor Injection for Hot Water

증기분사를 적용한 고온수용 지열 히트펌프의 성능특성

  • 박용정 (대한공조(주) 기술연구소) ;
  • 박병덕 (경북대학교 자동차공학부)
  • Received : 2014.04.07
  • Accepted : 2014.06.30
  • Published : 2014.06.30
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Abstract

The purpose of this study is to evaluate the experimental performance characteristics of a water-to-water geothermal heat pump featuring a vapor refrigerant injection for the production of hot water. The performance of geothermal heat pump with a vapor injection was evaluated by comparing with that of a conventional geothermal heat pump without a vapor injection. For heating operation, the geothermal heat pump with a vapor injection is superior in COP and heating capacity. The vapor injection was more effective for supplying hot water while overloading. The vapor injection was effective for the improvement of the cooling capacity. However, the vapor injection was not effective for the increasing of COP according to the increased input of a compressor. The advantage of vapor injection in water-to-water geothermal heat pump become disappeared while cooling operation with lower part loading.

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References

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