Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Influence of the Secondary Fluid Flow Rate on the Performance of a GSHP System

지중 순환수 유량 변화에 따른 지열원 히트펌프 시스템의 성능 특성 연구

  • Lee, Jun-Yub (Graduate School of Mechanical Engineering, Korea University) ;
  • Chung, Jin-Taek (Department of Mechanical Engineering, Korea University) ;
  • Woo, Jung-Son (New and Renewable Energy Research Division, KIER) ;
  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2010.05.28
  • Published : 2010.10.10
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Abstract

The aim of this study is to investigate the influence of the secondary fluid flow rate through GLHX on a GSHP system with vertical single U-tube type GLHXs. The COP of a GSHP system with large flow rate was lower than it with small flow rate due to large power consumption of ground loop circulating pump. It is suggested that the heat pump unit with high COP and low flow rate through the GLHX have to be selected in order to enhance the performance of the system and reduce the length of GLHX.

Keywords

References

  1. Lund, J., Sanner, B., Rybach, L, Curtis R. and Hellstrom, G., 2003, Ground-Source Heat Pumps-A World Overview, Renewable Energy World, pp. 218-227.
  2. DOE, 2001, Ground-source heat pumps applied to federal facilities-second edition, Federal Energy Management Program, DOE/EE-0245 (PNNL-13534), US Department of Energy.
  3. Ozgener, L., Hepbasli, A. and Dincer, I., 2007, A key review on performance improvement aspects of geothermal district heating systems and applications, Renew Sustainable Energy Rev., Vol. 11, pp. 1675-1697. https://doi.org/10.1016/j.rser.2006.03.006
  4. Choi, J. M., Shim, C. H., Woo, J. T. and Kang, H. J., 2009, GSHP system and certification system, Magazine of the SAREK, Vol. 38, No. 1, pp. 35-41.
  5. Hepbasli, A., 2002, Performance evaluation of a vertical ground-source heat pump system in Izmir, Turky, Int., Journal of Energy Res., Vol. 26, pp. 1121-1139. https://doi.org/10.1002/er.839
  6. Hepbasli, A., Akdemir, O. and Hancioglu, E., 2003, Experimental study of a closed loop vertical ground source heat pump system, Energy Conversion and Management, Vol. 44, pp. 527-548. https://doi.org/10.1016/S0196-8904(02)00073-0
  7. Zhao, P. C., Zhao, L., Ding, G. L. and Zhang, C. L., 2002, Experimental research on geothermal heat pump system with non-azeotropic working fluids, Applied Thermal Engineering, Vol. 22, No. 15, pp. 1749-1761. https://doi.org/10.1016/S1359-4311(02)00086-8
  8. Shin, H. J., Ahn, C. H. and Cho, C. S., 1995, Overview for the effective use of geo-thermal energy, Air-conditioning and Refrigeration Engineering, Vol. 24, No. 4, pp. 409-419.
  9. Kim, B. C., Shin, H. J. and Cho, C. S., 2003, The measurement and analysis of performance of ground source heat pump system in winter, Proceedings of the SAREK 2003 Summer Annual Conference, pp. 1086-1093.
  10. Ministry of Knowledge Economy, 2009, Standards of support, installation, and management for new and renewable energy system, Ministry of Knowledge Enconmy Anouncement 2009-332.
  11. Gaia Geothermal, 2006, Ground Loop Design Version 3.0 Getting Started Guide, U. S. A, PNGGENG-1005.
  12. www.knrec.or.kr.
  13. ISO, 1998, Water-source heat pumps-Testing and rating for performance; Part 2：Water-towater and brine-towater heat pumps, INTERNATIONAL STANDARD, ISO 13256-2.
  14. Kim, B., 2009, The energy performance analysis of ground heat sources heat pump system installed in green home, AIK Journal, Vol. 25, No. 9, pp. 339-346.
  15. Kong, H. J., Lim, H. J., Choi, J. H. and Sohn, B., 2009, Proceedings of the SAREK 2009 Summer Annual Conference, pp. 45-51.
  16. www.wilo.co.kr.