Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Study on the Energy Efficiency of a Geothermal Heat Pump System in use the Outdoor Reset Control Application

외기보상제어 적용에 따른 지열 히트펌프 시스템의 에너지 효율 향상에 관한 연구

  • Jung, Young-Ju (Department of Architectural Engineering, Graduate school of Yeungnam University) ;
  • Kim, Hyo-Jun (Department of Architectural Engineering, Graduate school of Yeungnam University) ;
  • Lee, Yong-Ho (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Hwang, Jung-Ha (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Cho, Young-Hum (School of Architecture, Yeungnam University)
  • 정영주 (영남대학교 대학원 건축학과) ;
  • 김효준 (영남대학교 대학원 건축학과) ;
  • 이용호 (경북대학교 건축토목공학부) ;
  • 황정하 (경북대학교 건축토목공학부) ;
  • 조영흠 (영남대학교 건축학부)
  • Received : 2014.12.23
  • Accepted : 2015.02.28
  • Published : 2015.02.28
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Abstract

The government is fostering a renewable energy industry as an alternative to handle the energy crisis. Among the renewable energy systems available, geothermal energy is being highlighted as being highly efficient and safely operable without the effect of outdoor air. Accordingly, a study on the geothermal heat pump is in progress in various worldwide perspective. However, Geothermal energy is only in charge of part load of the building due to the high initial installation cost in korea. Moreover, its efficiency is reduced due to the use of independent existing heat sources. In this study, after selecting the building containing the actual installed geothermal heat pump, the use of excellent geothermal heat pump systems was maximized in terms of the energy efficiency. The objective of this study is to show the operation method of geothermal heat pump system to improve energy efficiency through the TRNSYS simulation. This paper proposed operation methods of geothermal heat pump control according to outdoor air temperature. The result of this study is that existing operation method had some problems and if offered improvement is applied to real condition, energy consumption would be decreased.

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References

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