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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. 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.
    3. 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.

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