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Heat transfer analysis of energy piles with parallel U-Tubes

Author

Listed:
  • Cui, Ping
  • Jia, Linrui
  • Zhou, Xinlei
  • Yang, Wenxiao
  • Zhang, Wenke

Abstract

An energy pile with U-tubes is a special type of ground heat exchanger (GHE) formed by setting U-tubes into a concrete pile during the construction of building foundations. The parallel U-tubes increase heat transfer area, thereby improving energy pile performance. The analytical and numerical heat transfer models of U-tube energy piles are established in this study, considering homogenous and heterogeneous thermal properties of the pile and surrounding soil. Analytical solutions are obtained using the Laplace method and superimposition principle. The solutions of the analytical heat transfer model are verified using the numerical model with finite element method. The results provide a method for designing pile heat exchangers with U-tubes in parallel.

Suggested Citation

  • Cui, Ping & Jia, Linrui & Zhou, Xinlei & Yang, Wenxiao & Zhang, Wenke, 2020. "Heat transfer analysis of energy piles with parallel U-Tubes," Renewable Energy, Elsevier, vol. 161(C), pages 1046-1058.
    • Handle: RePEc:eee:renene:v:161:y:2020:i:c:p:1046-1058
    DOI: 10.1016/j.renene.2020.07.149
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    References listed on IDEAS

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    Cited by:

    1. Zhi Chen & Bo Wang & Lifei Zheng & Henglin Xiao & Jingquan Wang, 2021. "Research on Heat Exchange Law and Structural Design Optimization of Deep Buried Pipe Energy Piles," Energies, MDPI, vol. 14(20), pages 1-19, October.

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