Preliminary Analysis on Design Parameters and Application Effects of Surface Water Heat Exchanger (SWHE)

지표수 열교환기 설계 변수와 적용 효과에 대한 선행 분석

  • 손병후 (한국건설기술연구원 건축도시연구소)
  • Received : 2016.08.08
  • Accepted : 2016.08.29
  • Published : 2016.09.01


Commercial buildings and institutions are generally cooling-dominated and therefore reject more heat to a borehole ground heat exchanger (BHE) than they extract over the annual cycle. Shallow ponds can provide a cost-effective means to balance the thermal loads to the ground and to reduce the length of BHE. This paper presents the analysis results of the impact of design parameters on the length of SWHE pipe and its application effect on geothermal heat pump (GHP) system using BHE. In order to analysis, we applied ${\varepsilon}-NTU$ method on designing the length of SWHE pipe. Analysis results show that the required pipe length of SWHE was decreased with the increase of approach temperature difference and with the decrease of pipe wall thickness. In addition, when the SWHE was applied to the GHP system, the temperature of BHE was more stable than that of standalone BHE system.



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