Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Study on the Thermal Behavior of Vertical Borehole Heat Exchanger with 1-Dimensional Model

1차원 모델에 의한 지중열교환기의 열거동 해석

  • Lee, Se-Kyoun (Dept. of Mechanical Eng., Chungbuk National University) ;
  • Kim, Dae-Ki (Dept. of Mechanical Eng., Graduate School, Chungbuk National University) ;
  • Woo, Joung-Son (Korea Institute of Energy Research) ;
  • Park, Sang-Il (Korea Institute of Energy Research)
  • 이세균 (충북대학교 기계공학과) ;
  • 김대기 (충북대학교 대학원 기계공학과) ;
  • 우정선 (한국에너지기술연구원) ;
  • 박상일 (한국에너지기술연구원)
  • Published : 2005.03.30
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Abstract

A one-dimensional heat transfer model for the vertical borehole system is derived in this study to predict the thermal behavior of the system and surrounding soil. In this model the U-tube is replaced with one effective tube of effective diameter which is surrounded by concentric grout region. All thermal resistances of borehole are counted in the grout region with effective thermal conductivity of grout. Effective thermal conductivity of grout and sand are calculated through parameter estimation. The validity of this model is accomplished through comparison of the predicted temperature profiles of the model with experimental data.

Keywords

References

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