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The Influence of Soil Heat Imbalance on Ground-Coupled Heat Pump System and Strategy

[+] Author Affiliations
Rui Fan, Yingqian Song, Weiding Long

Tongji University, Shanghai, China

Yan Gao

Beijing Institute of Architecture and Engineering, Beijing, China

Paper No. IMECE2010-40028, pp. 1183-1188; 6 pages
doi:10.1115/IMECE2010-40028
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4429-8
  • Copyright © 2010 by ASME

abstract

It is well noticed that imbalance between winter heat requirement and summer heat gain in soil has an effect on heat transfer characteristic of ground heat exchanger (GHE), which results into the decrease of operation efficiency of ground-coupled heat pump system year by year. Therefore, the research on heat transfer characteristic of GHE for different heat imbalance rate is firstly presented in the article, and then, based on numerical model of heating conduction and groundwater heat advection, the influence of groundwater flow rate is analyzed. Finally, several suggestions such as auxiliary cool and heat source, GHE adjustment strategy are put forward for better and efficient operation of system.

Copyright © 2010 by ASME
Topics: Heat , Heat pumps , Soil

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