KIEAE Journal

Korea Institute of Ecological Architecture and Environment (한국생태환경건축학회)
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Characteristics Analysis of the Heat Exchange Rate according to Soil Temperature and Grout Material using Numerical Simulation

  • Oh, Jin Hwan (Dept. of Architecture, Cheongju University) ;
  • Nam, Yu Jin (Dept. of Architecture, Cheongju University)
  • Received : 2014.03.05
  • Accepted : 2014.03.25
  • Published : 2014.04.30
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Abstract

The ground source heat pump (GSHP) system has attracted much of attention, because of its stability of heat production and the high efficiency of the system. Performance of the heat exchanger is dependent on the soil temperature, the ground thermal conductivity, the operation schedule, the pipe placement and the design temperature. However, in spite of the many variables of these systems, there have been few research on the effect of the systems on system performance. In this study, analysis of the heat exchange rate according to soil temperature and grout material was conducted by numerical simulation. Furthermore, the heat distribution around the ground heat exchanger was presented on the different conditions of grout and underground temperature by the simulation.

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References

  1. Jin-Youn Lee, Jeong-snag Hahn, Characterization of groundwater temperature obtained from the korean national groundwater monitoring stations: lmplications for heat pumps, Journal of Hydrology, 2006, pp.514-526
  2. Penghui Gao, Guoqing Zhou, Study on temperature field around heat pipe underground based on lime heat source theory, Energy and Buildings, 2011, pp.2483-2487
  3. C.O. Popiel, J. Wojtkowiak, Temperature distributions of ground in the urban region of Poznan City, Experimental Thermal and Fluid Science, 2013, pp.135-148
  4. H. J. Shin, C. H. Ahn, C. S. Cho, Overview for the effective use of geothermal energy, Magazine of the SAREK, 1995, pp. 409-419
  5. Fabien Delaleux, Xavier Py, Regis Olives, Antoine Dominguez, Enhancement of geothermal borehole heat exchangers performances by improvement of bentonite grouts conductivity, Applied Thermal Engineering, 2012, pp. 92-99
  6. A.A. Alrtimi, M. Rouainia, D.A.C. Manning, Thermal enhancement of PFA-based grout for geothermal heat exchangers, Applied Thermal Engineering, 2013, pp. 559-564.
  7. Roque Borinaga-Trevino, Pablo Pascual-Munoz, Daniel Castro -Fresno, Juan Jose Del Coz-Diaz, Study of different grouting materials used in vertical geothermal closed-loop heat exchangers, Applied Thermal Engineering, 2013, pp. 159-167.
  8. Hyo Jae Lim, Hyoung Jin Kong, Yoon Seok Song, Seong Koo Park, Thermal conductivity measurement of grouting materials for geothermal heat exchanger, Journal of SAREK, 2005, Vol. 17, No. 4, pp. 364-369
  9. Nam Yujin, Numerical analysis for the effect of ground and groundwater conditions on the performance of ground source heat pump system, Journal of SAREK, Vol. 23, No. 5, pp. 321-326
  10. Nam Y. J., Ooka R. and Hwang S. H., Development of a numerical model to predict heat exchange rates for a ground-source heat pump system, Energy and Buildings, 2007, Vol. 40, pp.2133-2140.