Analytical thermal analysis of novel foundation pile ground heat exchanger with spiral coils

Man Yi, Hongxing Yang, Zhaohong Fang, Yunxia Qu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)


The extensive application of ground-coupled heat pump system (GCHP) is restricted by the installation of conventional borehole ground heat exchangers (GHE). Combining the GHE and building foundation piles as "energy piles" can eliminate the drilling cost and land area requirement of a conventional borehole GHE. In this study, the accurate analytical thermal analysis is carried out for simulating the heat transfer process of the novel pile GHE with spiral coils. The temperature responses of the coil pipe wall and the circulating water entering/effusing the pile GHE to the short time step heat transfer loads are deduced based on the established analytical transient three-dimensional spiral source model. Then the operation performance as well as the heat exchange capacity of novel pile GHE is investigated and compared with conventional borehole GHE. The analytical solutions developed in this study can provide an appropriate and convenient tool for thermal analysis and design of the novel foundation pile GHE with spiral coils. It is believed to be a new contribution in the foundation pile GHE field.
Original languageEnglish
Title of host publicationProceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning
Subtitle of host publicationHVAC and R Component and Energy System
Number of pages11
EditionVOL. 2
Publication statusPublished - 24 Feb 2014
Event8th International Symposium on Heating, Ventilation, and Air Conditioning, ISHVAC 2013 - Xi'an, China
Duration: 19 Oct 201321 Oct 2013

Publication series

NameLecture Notes in Electrical Engineering
NumberVOL. 2
Volume262 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119


Conference8th International Symposium on Heating, Ventilation, and Air Conditioning, ISHVAC 2013


  • Analytical thermal analysis
  • Ground-coupled heat pump system
  • Novel foundation pile ground heat exchanger
  • Transient three-dimensional spiral source model
  • Vertical spiral coils

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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