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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A Study on the Certified Ground Source Heat Pump and Performance Analysis

지열원 히트펌프 유닛 인증 현황 및 성능 분석에 관한 연구

  • Chang Woo Yang (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Hee Jeong Kang (Korea Refrigeration & Air-conditioning Assessment Center) ;
  • Jong Min Choi (Department of Mechanical Engineering, Hanbat National University)
  • 양찬우 (한밭대학교 대학원 기계공학과) ;
  • 강희정 (한국냉동동조인증센터 ) ;
  • 최종민 (한밭대학교 기계공학과)
  • Received : 2022.10.11
  • Accepted : 2022.11.22
  • Published : 2022.12.01
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Abstract

To reduce energy consumption and CO2 emission in building sector, a ground source heat pump system has been highly adopted due to its high efficient by many regulation. A certification system has been operated to distribute reliable and high-efficient heat pump units. In this study, the performance status of the recently certified ground source heat pump unit with components was investigated. All heat pump units certified from 2015 to 2020 were water to water heat pump types. Compared to the past, higher capacity systems over 400 kW have been certificed. The cooling COP of the heat pump unit based on certification criteria showed higher value than the heating COP. It is highly recommended to revise the certified criteria values considering operating conditions individually. Most of ground source heat pump units have employed scroll type compressors and plate type heat exchangers with HFC refrigerant.

Keywords

Acknowledgement

이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구입니다(No. 2022R1A2C2006469).

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