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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The Effect of Soil Permeability and Pumping Rate on Performance of Two-well Geothermal Heat Pump System

지반 투수계수와 양수량 조건이 복수정 지열 히트펌프 시스템의 성능에 미치는 영향

  • Cho, Jeong-Heum (Department of Architectural Engineering, Pusan National University) ;
  • Nam, Yujin (Department of Architectural Engineering, Pusan National University)
  • 조정흠 (부산대학교 건축공학과) ;
  • 남유진 (부산대학교 건축공학과)
  • Received : 2015.10.13
  • Accepted : 2015.11.13
  • Published : 2015.12.01
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Abstract

The groundwater heat pump (GWHP) systems have great potential for heating-cooling system which use annual constant groundwater temperature for heat source. Generally, the performance of GWHP system significantly depends on the geological and hydraulic properties such as hydraulic conductivity, thermal conductivity, soil condition so on. Therefore, in order to use GWHP systems efficiently, it is necessary to analyze the effect of design factors on the system performance. However, there are a few researches on the optimum design method for the open-loop geothermal system. In this research, the design factor in the open-loop geothermal system was analyzed quantitatively for the optimal design method by using numerical simulation. As a result, it was found that the temperature change of heat source depends on the design factor.

Keywords

References

  1. Cho, J. H. and Nam, Y. J., 2015, A study on the characteristics of heat source temperature for two-well geothermal system using numerical simulation, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol.27, No. 4, pp. 207-212. https://doi.org/10.6110/KJACR.2015.27.4.207
  2. Cho, J. H. and Nam, Y. J., 2015, Performance Analysis of Two-Well Geothermal System Considering Soil Conditions, Proceeding of spring annual conference AIK, Vol. 27, No. 4, pp. 207-212.
  3. New York City Department of Design and Construction, 2012, Geothermal heat pump manual - A design and installation guide for New York City, New York
  4. The geothermal Heat systems in government buildings, 2013, H25 Ministry of Land, Japan.
  5. New and Renewable Center of Korea Energy Management Corporation, 2015, New and renewable energy equipment guideline.
  6. Minea, V., 2012, Experimental investigation of the reliability of residential standing column heat pump systems without bleed in cold climates, Applied Thermal Engineering, Vol. 52, pp. 230-243.
  7. Russo, S. L., Gnavi, L., Roccia, E., Taddia, G., and Verda, V., Groundwater Heat Pump (GWHP) system modeling and Thermal Affected Zone (TAZ) prediction reliability: Influence of temporal variations in flow discharge and injection temperature, Geothermics, Vol. 51, pp. 103-112. https://doi.org/10.1016/j.geothermics.2013.10.008
  8. Russo, S. L., Taddia, G., and Verda, V., Development of the thermally affected zone (TAZ) around a groundwater heat pump (GWHP) system: A sensitivity analysis, Geothermics, Vol. 43, pp. 66-74. https://doi.org/10.1016/j.geothermics.2012.02.001
  9. Russo, S. L., Taddia, G., Baccino, G., and Verda, V., Different design scenarios related to an open loop groundwater heat pump in a large building: Impact on subsurface and primary energy consumption, Energy and Buildings, Vol. 43, 347-357. https://doi.org/10.1016/j.enbuild.2010.09.026
  10. Casasso, A. and Sethi, R., Modelling thermal recycling occurring in groundwater heat pumps (GWHPs), Renewable Energy, Vol. 77, pp. 86-93. https://doi.org/10.1016/j.renene.2014.12.003
  11. Lee, W. H., Kim, J. Y., Hong, W. H., and Ahn, C. H., A study on recovery time of ground water temperature of small scale GWHP using standing column well in case of heating, Journal of the Architectural Institute of Korea, Vol. 24, No. 7, pp. 223-230.
  12. Hwang, S. H., The study on the eveluation of groundwater properties to design of ground heat exchanger for ground source heat pump system, Journal of Korean Institute of Architectural Sustainable Environment and Building Systems, Vol. 7, No. 1, pp. 58-65.
  13. Jeffrey, D. S., Simon, J. R., Zheng, D., and Andrew, C., 2002, R&D Studies Applied to Standing Column Well Design, ASHRAE 1119-RP.
  14. Nam, Y. J. and Ryozo, O., 2010, Numerical simulation of ground heat and water transfer for groundwater heat pump system based on real-scale experiment, Energy and Buildings, Vol. 42, pp. 69-75. https://doi.org/10.1016/j.enbuild.2009.07.012

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