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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Ground Air Heat Exchanger Design and Analysis for Air Source Heat Pump

공기열원 히트펌프를 위한 공기식 지중 열교환기(GAHX) 설계 및 분석 연구

  • Lee, Kwang-Seob (Department of Renewable Energy Engineering, University of Science and Technology) ;
  • Lyu, Nam-Jin (Technical Research Center, Tapsol) ;
  • Kang, Eun-Chul (Energy Efficiency Research Division, Korea Institute of Energy Research) ;
  • Lee, Euy-Joon (Energy Efficiency Research Division, Korea Institute of Energy Research)
  • 이광섭 (과학기술연합대학원대학교 재생에너지공학과) ;
  • 류남진 ((주)탑솔 기술연구소) ;
  • 강은철 (한국에너지기술연구원 에너지효율연구본부) ;
  • 이의준 (한국에너지기술연구원 에너지효율연구본부)
  • Received : 2016.02.22
  • Accepted : 2016.05.06
  • Published : 2016.06.01
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Abstract

A ground air heat exchanger (GAHX), also called earth air heat exchanger is a useful technology to be integrated with other renewable energy technologies. In this study, ground-air heat exchanger system for the air source heat pump is introduced. The purpose of this study is to design the volumetric flow rate and the length of GAHX system. A GAHX length model equation has been developed and used for calculation. GAHX thermal efficiency are recommended as 75% and 85% in order to optimize pipe length. $2,750m^3/h$, $2,420m^3/h$ of volumetric flow rate on 88.3m, 111.7m length are suggested for providing 7.5kW thermal capacity. And the number of path is recommended more than two to minimize pressure drop. For future study, advanced model equation study with ground thermal behavior and a more efficient GAHX design will be considered.

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References

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  1. Model Verification and Justification Study of Spirally Corrugated Pipes in a Ground-Air Heat Exchanger Application vol.12, pp.21, 2019, https://doi.org/10.3390/en12214047