Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Study on Heating Performance of Hybrid Heat Pump System Using Geothermal Source and Solar Heat for Protected Horticulture

시설원예용 지열 및 태양열 이용 하이브리드 히트펌프 시스템의 난방성능에 관한 연구

  • Jeon, Jong Gil (Protected Horticulture Institute, Rural Development Administration(RDA)) ;
  • Lee, Dong Geon (TR Exergy Company) ;
  • Paek, Yee (Department of Agricultural Engineering, RDA) ;
  • Kim, Hyung Gweon (Protected Horticulture Institute, Rural Development Administration(RDA))
  • 전종길 (농촌진흥청 시설원예연구소) ;
  • 이동건 ((주)티알엑서지) ;
  • 백이 (농촌진흥청 농업공학부) ;
  • 김형권 (농촌진흥청 시설원예연구소)
  • Received : 2015.10.08
  • Accepted : 2015.10.30
  • Published : 2015.10.30
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Abstract

In this study a hybrid heating system based on geothermal source and solar heat was developed in order to save energy for greenhouse heating and its field performance was evaluated. Developed system are composed of following parts: water tank, heat exchanger, heat pump, fan coil unit and heat storage unit. The working performance test was carried out in a greenhouse cultivating oriental orchids being managed by $23^{\circ}C$. Field performance test results showed that average heating coefficient of performance ($COP_h$) was 3.4 for the period from mid-January to mid-March 2013. Heating coefficient of performance ($COP_h$) of developed hybrid heat pump system was more sensitive to water tank temperature than outside air temperature. This study showed that developed hybrid heat pump system has a potential to save the heating costs up to 91% compared to conventional agricultural oil heaters.

Keywords

References

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