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Research on ground-coupled heat exchangers

Author

Listed:
  • Jiufa Chen
  • Weilai Qiao
  • Qin Xue
  • Hongqi Zheng
  • Erming An

Abstract

Ground source heat pump (GSHP) has been considered as one of the most promising low-carbon technologies for building heating, ventilation and air conditioning (HVAC) applications at present. Since a GSHP relies heavily on the performance of ground-coupled heat exchangers (GCHEs), this paper was focused on GCHEs key technical issues and presented results of experimental investigation and computer simulation. A test rig was built to carry out the thermal response test, and test results for a double-U tube GCHE were analyzed. Software Fluent was used to simulate the GCHEs and simulation models were created for single-U-type and double-U-type GCHEs for the depths of 50, 60 and 70 m. Based on dissipation simulation it was found that using a double-U-type GCHE to replace a single-U-type GCHE can gain an increase in the total heat dissipation capacity by over 50%, with a drawback of 20% reduction of circulating water temperature difference. The borehole depth of a GCHE can be increased to meet the requirement of a larger heat dissipation capacity. The specific heat dissipation rate will drop about 6% for every 10 m increase in borehole depth. This study is useful for design GCHEs and the ground-coupled heat pump technology. Copyright The Author 2010. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.

Suggested Citation

  • Jiufa Chen & Weilai Qiao & Qin Xue & Hongqi Zheng & Erming An, 2009. "Research on ground-coupled heat exchangers," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 5(1), pages 35-41, December.
    • Handle: RePEc:oup:ijlctc:v:5:y:2009:i:1:p:35-41
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctp040
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    Cited by:

    1. Cockrill, Antje & Liu, Yang, 2013. "Western popular music consumption by highly involved Chinese music fans," Journal of Retailing and Consumer Services, Elsevier, vol. 20(3), pages 263-271.
    2. Giovanni Covi, 2014. "Dutch disease and sustainability of the Russian political economy," ECONOMICS AND POLICY OF ENERGY AND THE ENVIRONMENT, FrancoAngeli Editore, vol. 2014(2), pages 75-110.
    3. Laura Kudrna & Georgios Kavetsos & Chloe Foy & Paul Dolan, 2016. "Without my Medal on my Mind: Counterfactual Thinking and Other Determinants of Athlete Emotions," Working Papers 66, Queen Mary, University of London, School of Business and Management, Centre for Globalisation Research.

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