Evaluating the applicability of the radial approximation for pile heat exchangers

Nick Woodman, F. A. Loveridge, Saqib Javed, Johan Claesson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review


This paper appraises the efficacy of using an analytical radial approximation for different thermal pile heat exchanger geometries. Unsteady radial heat-flow from fluid in a pipe set within a grouted borehole into the external ground is well-documented and can be solved analytically very rapidly using Laplace Transforms (Javed and Claesson 2011). By comparing the radial model with finite-element simulations including explicit pile geometries, this paper provides a provisional analysis of the accuracy of this approach. Initial findings suggest that the radial model may provide an appropriate approximation to pile behaviour for certain pipe configurations, albeit with small ‘mid-time’ error.

Original languageEnglish
Title of host publicationEnergy Geotechnics
Number of pages8
Publication statusPublished - 2019 Jan 1
EventInternational Symposium on Energy Geotechnics, SEG 2018 - Lausanne, Switzerland
Duration: 2018 Sept 252018 Sept 28

Publication series

NameSpringer Series in Geomechanics and Geoengineering
ISSN (Print)1866-8755


ConferenceInternational Symposium on Energy Geotechnics, SEG 2018

Subject classification (UKÄ)

  • Geotechnical Engineering
  • Energy Engineering


Dive into the research topics of 'Evaluating the applicability of the radial approximation for pile heat exchangers'. Together they form a unique fingerprint.

Cite this