A fast numerical approach for the horizontal ground heat exchanger

Cang Tong, Xiangli Li*, Xingjie Ge, Haichao Wang, Lin Duanmu

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
44 Downloads (Pure)


A fast thermal response numerical (TRN) approach for horizontal ground heat exchanger (HGHE) was developed and verified. The shape equivalence method was used to process the shapes of pipe cross section and elbows, reducing the meshing difficulty and the grid quantity of HGHE. A series of geometric equivalent quantization values were presented. Meanwhile, a semi-analytical equation was derived to reduce the sensitivity of the TRN model to the time step. The simulation results show the calculation speed of the TRN model is 38.98 times that of the Fluent model in the same case. Furthermore, long-term operations of HGHE were simulated, revealing that the soil around HGHE has good heat recovery capacity.

Original languageEnglish
Pages (from-to)8-30
Number of pages23
JournalNumerical heat transfer part a-Applications
Issue number1-2
Early online date19 Apr 2022
Publication statusPublished - 2022
MoE publication typeA1 Journal article-refereed


  • Horizontal ground heat exchanger
  • long-term operation
  • shape equivalence method
  • thermal response numerical model


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