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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Daily Heating Performance of a Ground Source Multi-heat Pump at Heating Mode

지열원 물대공기 멀티 히트펌프의 일일 난방 운전 특성에 관한 실증 연구

  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University) ;
  • Lim, Hyo-Jae (Department of Mechanical Engineering, Hoseo University) ;
  • Kang, Shin-Hyung (Department of Mechanical Engineering, Konyang University) ;
  • Moon, Je-Myung (Air-conditioning R&D Group, Samsung Electronics Co. Ltd.) ;
  • Kim, Rock-Hee (Air-conditioning R&D Group, Samsung Electronics Co. Ltd.)
  • 최종민 (국립한밭대학교 기계공학과) ;
  • 임효재 (호서대학교 기계공학과) ;
  • 강신형 (건양대학교 기계공학과) ;
  • 문제명 (삼성전자 생활가전 사업부) ;
  • 김록희 (삼성전자 생활가전 사업부)
  • Published : 2009.09.10
Download PDF
⟨ Previous Next ⟩

Abstract

The aim of this study is to investigate the daily heating performance of ground source multi-heat pump system with vertical single U-tube type GLHXs, which were installed in a school building located in Cheonan. Daily average COP of heat pump unit on Jan. 12th, 2009 at heating mode was lower than it on Nov. 10th, 2008 and Dec. 15th, 2008, because of lower EWT of the outdoor heat exchanger and relatively smaller size of condenser and evaporator. But, the system COP on the former was higher than it on the latter because ground loop circulating pump was operated in rated speed. It is suggested that the new algorithms to control the flow rate of secondary fluid for GLHX according to load change have to be developed in order to enhance the performance of the system COP.

Keywords

References

  1. 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
  2. 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
  3. Spitler, J., 2005, Ground-source heat pump system research-past, present and future, HVAC&R Res. Vol. 11, pp. 165-167 https://doi.org/10.1080/10789669.2005.10391132
  4. Sohn, B. H., Cho, C. S., Shin, H. J. and An, H. J., 2004, Heat exchanger performance of vertical u-tube ground heat exchangers, Proceedings of the SAREK, pp. 1323-1328
  5. Song, I. S., Joo, J. J., Chung. H. J., Kang, H., Kim, Y., and Choi, J. M., 2007, The performance of capacity modulation and MIMO control for system heat pump, Proceeding of the SAREK 2007 Winter Annual Conference, pp. 364-369
  6. Song, I. S., Choi, J. M., Joo, J. J., Chung, H. J., Kang, H. and Kim, Y., 2008, The performance of a simultaneous heat and cooling heat pump at various charging conditions, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 20, No. 7, pp. 492-499
  7. Lund, J. W. and Freeston, D. H., 2001, Worldwide direct use of geothermal energy 2000, Geothermics, Vol. 30, pp. 29-68 https://doi.org/10.1016/S0375-6505(00)00044-4
  8. 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
  9. Hepbasli, A., Akdemir, O., 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
  10. Zhao, P. C., Zhao, L., Ding, GlL. 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
  11. 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
  12. Kim, B. C., Shin, H. J. and Cho, C. S., 2003, The measurement and analysis of performance of ground source heat pump system in w inter, Proceedings of the SAREK 2003 Summer Annual Conference, pp. 1086-1093
  13. Sohn, B. H., Cho, C. S., Shin, H. J., An, H. J., and Yim, S. K., 2003, Performance evaluation of a closed loop vertical ground-source heat pump system, Proceedings of the SAREK 2003 Winter Annual Conference, pp. 56-61
  14. Sohn, B. H., Cho, C. S., Shin, H. J. and An, H. J., 2005, Cooling and heating performance evaluation of a GSHP system. Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 17, No. 1, pp. 71-81
  15. Shin, H. J., Cho, J. S., Hwang, I. J., Kim, J. Y., Lee, S. W., Sohn, B. H., Lim, H. J., Park, S. G., Lee, C. and Song, Y. S., 2005, Construction of performance evaluation methods and technical standards for ground source heat pump systems, Final Report, Ministry of Knowledge Economy
  16. Ministry of Knowledge Economy, 2008, Standards of support, installation, and management for new and renewable energy system, Ministry of Knowledge Enconmy Announcement 2008
  17. IGSHPA, 2007, GLHEPRO 4.0 for windows user’s guide, School of Mechanical and Aerospace Engineering, Oklahoma State University
  18. Stoecker, W. F. and Jones, J. W., 1982, Refrigeration and Air conditioning, McGraw-Hill
  19. Samsung, 2008, Samsung DVM Technical Manual, Samsung Co