DOI QR코드

DOI QR Code

Numerical Analysis of the Effect of Ground Source Heat Pump Systems on the Underground Temperature

지열 시스템의 도입이 지중온도환경에 미치는 영향에 대한 해석적 검토

  • Nam, Yujin (Department of Architectural Engineering, Cheongju University)
  • 남유진 (청주대학교 건축공학과)
  • Received : 2013.03.24
  • Published : 2013.08.10

Abstract

Ground heat pump systems utilize the annually stable underground temperature to supply heat for space heating and cooling. The underground temperature affects not only the underground ecosystem, but also the performance of these systems. However, in spite of the widespread use of these systems, there have been few researches on the effect of the systems on underground temperature. In this research, case studies with numerical simulation have been conducted, in order to estimate the effect of ground heat pump systems on underground temperature. The simulation was coupled with the ground water-ground heat transfer model and the ground surface heat transfer model. In the result, it was found that the underground change depends on the heat transfer from the ground surface, the heat exchange rate, and the heat conductivity of soil.

Keywords

References

  1. Cathomen, N., 2002, Warmetransport im Groundwasser, Auswirkung von Warmepumpenalagen auf die Grundwassertemperatur am Beispiel der Gemeinde Altach im Vorarlberger Rheintal. Diplomarbeit, Wintersemester 2001-02, Eidenossishe Tchenische Hochschle, Zurich.
  2. Tenma, N., Yasukawa, K., Uchida, Y., Ohtani, T., and Mori, K., 2007, Numerical Simulation of Subsurface Temperature Change Caused by Geothermal Heat Pump Systems : Study on the Subsurface Thermal Structure at the Sendai Plain 2nd paper, Journal of the Geothermal Research Society of Japan, Vol. 29, pp. 13-23.
  3. Min, K. C. and Choi, J. H., 2011, Effect of the Design Parameters of Geothermal Heat Exchanger Design Length, Journal of Korean Society of Geothermal Energy Engineers, Vol. 7, No. 2, pp. 10-15.
  4. Jang, J. H., 2011, Model development to simulate standing column well ground heat pump system and sensitivity analysis on the design parameters, MS thesis, Hanyang University, Seoul, Korea.
  5. Sohn, B. H. and Choi, J. M., 2012, Performance Prediction of Geothermal Heat Pump(GHP) System with Energy Piles Using Simulation Approach, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 24, No. 2, pp. 155-163. https://doi.org/10.6110/KJACR.2012.24.2.155
  6. FEFLOW 5.3 Reference Manual, WASY Software.
  7. Nam, Y. J., Ooka, R., and Hwang, S. H., 2007, Development of a numerical model to predict heat exchange rates for a ground-source heat pump system, Energy and Buildings, Vol. 40, pp. 2133-2140.

Cited by

  1. Performance Prediction on the Application of a Ground-Source Heat Pump(GSHP) System in an Office Building vol.26, pp.9, 2014, https://doi.org/10.6110/KJACR.2014.26.9.409
  2. Influence of closed loop ground source heat pumps on groundwater: a case study vol.51, pp.2, 2015, https://doi.org/10.14770/jgsk.2015.51.2.243