Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Heating Performance of a Ground Source Multi-Heat Pump for a Greenhouse

지열원 멀티 열펌프 시스템의 시설원예 적용 난방성능 특성 실증 연구

  • Kang, Shin-Hyung (Department of Mechanical Engineering, Konyang University) ;
  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University) ;
  • Moon, Je-Myung (System Air Conditioning R&D Group, Samsung Electronics Co. Ltd.) ;
  • Kwon, Hyung-Jin (System Air Conditioning R&D Group, Samsung Electronics Co. Ltd.)
  • 강신형 (건양대학교 기계공학과) ;
  • 최종민 (국립한밭대학교 기계공학과) ;
  • 문제명 (삼성전자 공조솔류선사업팀) ;
  • 권형진 (삼성전자 공조솔류선사업팀)
  • Received : 2010.02.16
  • Accepted : 2010.03.12
  • Published : 2010.06.10
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Abstract

Good plant-growth conditions can be achieved by means of using greenhouses. One of the main issues in greenhouse cultivation is energy savings through the development of high efficient heating and cooling system. GSHPs are one of the recommended systems to cope with this pending need. The aim of this study is to investigate the heating performance of ground source multi-heat pump system installed in a greenhouse under part load conditions. Daily average heating COP of the heat pump unit was very high by at least 7.4, because of relatively large condenser, evaporator, and mass flow rate through ground loop heat exchanger. However, the system COP, overall heating coefficient of the performance of the system with heat pump unit and GLHX, decreased drastically due to relatively large power consumption of circulating pump under part load condition. It is suggested that the technology to enhance the performance of the ground source multi-heat pump system for a greenhouse under part load conditions should be developed.

Keywords

References

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