Evaluating the applicability of the radial approximation for pile heat exchangers

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

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.

Details

Authors
Organisations
External organisations
  • University of Southampton
  • University of Leeds
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Geotechnical Engineering
  • Energy Engineering
Original languageEnglish
Title of host publicationEnergy Geotechnics
PublisherSpringer
Pages3-10
Number of pages8
Edition217729
Publication statusPublished - 2019 Jan 1
Publication categoryResearch
Peer-reviewedYes
EventInternational Symposium on Energy Geotechnics, SEG 2018 - Lausanne, Switzerland
Duration: 2018 Sep 252018 Sep 28

Publication series

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

Conference

ConferenceInternational Symposium on Energy Geotechnics, SEG 2018
CountrySwitzerland
CityLausanne
Period2018/09/252018/09/28