New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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A Study on Reliability Improvement of Domestic Ground Source Heat Pump Units by Analyzing the Certification System

국내 지열원 히트펌프 유닛의 인증제도 분석을 통한 신뢰성 향상 방안 연구

  • Chan Woo Yang (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Hee Jeong Kang (Research and Test Team, Korea Refrigeration & Air-conditioning Assessment Center) ;
  • Sewang Oh (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Ubin Do (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Kwang Ho Lee (Department of Architecture, Korea University) ;
  • Jong Woong Choi (Research Institute, K-Water) ;
  • Yong Cho (Research Institute, K-Water) ;
  • Jong Min Choi (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2023.08.20
  • Accepted : 2023.11.11
  • Published : 2023.12.25
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Abstract

Only ground source heat pump units certified according to the regulations in Korea can be adopted in ground source heat pump systems. In this study, domestic and international standards and regulations for ground source heat pump units were investigated. Unlike ISO 13256-1~2, which is the international standard, KS B 8292~8294 for ground source heat pump unit only included rated test conditions. Therefore, it is necessary to supplement various test conditions to the KS B series, because its performance data, which is required to calculate the system's design capacity, is dependent on the change in entering water temperature. The difference between the coefficient of performance of the certified ground source heat pump units and the certified criteria changed significantly according to the operating mode, heat source, and load type, because the criteria increased by about 5% for all. Thus, it is highly suggested that the certification standards be revised while considering the product performance level and various conditions.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구입니다(No. 2022R1A2C2006469). 본 연구는 환경부의 폐자원에너지화 특성화대학원 사업에서 지원받았습니다.

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