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Evaluating the applicability of the radial approximation for pile heat exchangers

Woodman, Nick; Loveridge, F. A.; Javed, Saqib LU and Claesson, Johan LU (2019) International Symposium on Energy Geotechnics, SEG 2018 In Springer Series in Geomechanics and Geoengineering p.3-10
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.

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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Energy Geotechnics
series title
Springer Series in Geomechanics and Geoengineering
pages
8 pages
publisher
Springer
conference name
International Symposium on Energy Geotechnics, SEG 2018
conference location
Lausanne, Switzerland
conference dates
2018-09-25 - 2018-09-28
external identifiers
  • scopus:85053267902
ISSN
1866-8755
DOI
10.1007/978-3-319-99670-7_1
language
English
LU publication?
yes
id
e0dad9f6-ce19-43be-8021-faca0a72d544
date added to LUP
2018-10-08 09:56:32
date last changed
2018-11-21 21:42:08
@inproceedings{e0dad9f6-ce19-43be-8021-faca0a72d544,
  abstract     = {<p>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.</p>},
  author       = {Woodman, Nick and Loveridge, F. A. and Javed, Saqib and Claesson, Johan},
  booktitle    = {Springer Series in Geomechanics and Geoengineering},
  issn         = {1866-8755},
  language     = {eng},
  location     = {Lausanne, Switzerland},
  month        = {01},
  pages        = {3--10},
  publisher    = {Springer},
  title        = {Evaluating the applicability of the radial approximation for pile heat exchangers},
  url          = {http://dx.doi.org/10.1007/978-3-319-99670-7_1},
  year         = {2019},
}