Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
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Evaluation on Cooling Performance of Ground Source Heat Pump System Equipped with Steel-pipe Civil Structures

강관 토목구조물이 설치된 지열 히트펌프 시스템의 냉방 성능 평가

  • Seokjae Lee (Department of Civil Engineering, Kunsan National University) ;
  • Jeonghun Yang (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Hangseok Choi (School of Civil, Environmental and Architectural Engineering, Korea University)
  • 이석재 (군산대학교 토목공학과) ;
  • 양정훈 (고려대학교 건축사회환경공학부) ;
  • 최항석 (고려대학교 건축사회환경공학부)
  • Received : 2023.08.14
  • Accepted : 2023.08.31
  • Published : 2023.09.01
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Abstract

Steel-pipe civil structures, including steel-pipe energy piles and cast-in-place piles (CIPs), utilize steel pipes as their primary reinforcements. These steel pipes facilitate the circulation of a working fluid through their annular crosssection, enabling heat exchange with the surrounding ground formation. In this study, the cooling performance of a ground source heat pump (GSHP) system that incorporated steel-pipe civil structures was investigated to assess their applicability. First of all, the thermal performance test was conducted with steel-pipe CIPs to evaluate the average heat exchange amount. Subsequently, a GSHP system was designed and implemented within an office container, considering the various types of steel-pipe civil structures. During the performance evaluation tests, parameters such as the coefficient of performance (COP) and entering water temperature (EWT) were closely monitored. The outcomes indicated an average COP of 3.74 for the GSHP system and the EWT remained relatively stable throughout the tests. Consequently, the GSPH system demonstrated its capability to consistently provide a sufficient heat source, even during periods of high cooling thermal demand, by utilzing the steel-pipe civil structures.

Keywords

Acknowledgement

이 논문은 2023년도 군산대학교 신임교수 연구비 지원과 한국연구재단의 지원(NRF-2022R1C1C2003462)에 의하여 연구되었음.

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