Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Study on Hybrid Heating System with Anti-Superheating Devices

과열방지장치가 설치된 복합열원 난방시스템에 관한 연구

  • Park, Youn-Cheol (Faculty of Mechanical Energy and System Engineering, Cheju National University) ;
  • Ko, Gwang-Soo (Department of Mechanical Engineering, Cheju National University) ;
  • Han, Yu-Ry (Department of Mechanical Engineering, Cheju National University)
  • 박윤철 (제주대학교 기계에너지시스템공학부) ;
  • 고광수 (제주대학교 기계공학과) ;
  • 한유리 (제주대학교 기계공학과)
  • Published : 2007.06.30
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Abstract

The previous study was conducted to develop an air source multi heat pump system that could be operated with the solar collector and air source heat exchangers as heat source of the system. There is a winter-sowing problems in air source multi heat pump system when the outdoor temperature goes down under freezing point. The winter-sowing problem was solved by adapting R-22 refrigerant as working fluid in the previous study. However, when the system operated at high temperature, another problems are come out such as overheating of the solar collector outlet which lead to the superheat of the compressor inlet of the heat pump system. The condition could deteriorates a compressor in some case. In this study, we installed the anti-superheating devices on the previously developed system. As results of system performance test, COP of the system with anti-superheating technique is 2.4. It is a little improved COP compare to previous study's 2.23. In the results of multi heat source heating system, during operating solar collector, COP is relatively high between $200\;W/m^2$ and $400\;W/m^2$ solar intensity. It is recommended to extend the study on performance optimization with balancing the solar collect and capacity of compressor at higher solar irradiation conditions.

Keywords

References

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