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


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.



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