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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Empirical Results and Operational Cost Analysis of Geothermal Heat Pump System using Thermal Energy Storage in Cooling Season

축열식 지열원 히트펌프 시스템의 냉방기간 실증운전 결과 및 운영비용 분석

  • 김득원 (한국에너지기술연구원 태양열융합연구실) ;
  • 이동원 (한국에너지기술연구원 태양열융합연구실) ;
  • 허재혁 (한국에너지기술연구원 태양열융합연구실) ;
  • 김민휘 (한국에너지기술연구원 태양열융합연구실)
  • Received : 2017.12.28
  • Accepted : 2018.02.09
  • Published : 2018.04.10
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Abstract

The geothermal heat pump systems were installed for heating and cooling of public buildings in Jincheon Eco-friendly Energy town. The heat pump system was operated at night to save on operational costs, and the cold heat was stored in thermal energy storage (TES). In this study, the performance of geothermal heat pump systems with the TES during the summer season was analyzed, and the operational costs with and without the TES were compared. The electric chiller model was used to simulate a heat pump applied without the TES system. Electric rates of each system were measured to calculate operational costs. When the TES is used in the air conditioning system, the electric load (30.4 MWh) calculated in the daytime can move to off-peak load time, and the operational cost is reduced by 36~54%.

Keywords

Acknowledgement

Supported by : 연구재단

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