2D thermal resistance of pile heat exchangers
2D thermal resistance of pile heat exchangers
Structural foundation piles are being used increasingly as heat exchangers to provide renewable heat for new buildings. To design such energy systems a steady state is assumed within the pile, which is conventionally characterised by constant thermal resistance. However, there has been little research regarding pile resistance and there are few published case studies. Numerical modelling results are presented hereto provide typical values of pile resistance, depending on the details of the heat exchange pipes. Analysis suggests large diameter piles may take several days to reach steady state; in these cases a transient design approach may be more appropriate.
geothermal, piled foundations, ground energy, thermal resistance, ground heat exchangers
122-135
Loveridge, F.A.
fb5b7ad9-d1b8-40d3-894b-bccedf0e8a77
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
April 2014
Loveridge, F.A.
fb5b7ad9-d1b8-40d3-894b-bccedf0e8a77
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Abstract
Structural foundation piles are being used increasingly as heat exchangers to provide renewable heat for new buildings. To design such energy systems a steady state is assumed within the pile, which is conventionally characterised by constant thermal resistance. However, there has been little research regarding pile resistance and there are few published case studies. Numerical modelling results are presented hereto provide typical values of pile resistance, depending on the details of the heat exchange pipes. Analysis suggests large diameter piles may take several days to reach steady state; in these cases a transient design approach may be more appropriate.
Text
Loveridge&Powrie pile resistance R2-1clean.pdf
- Accepted Manuscript
More information
Accepted/In Press date: 18 September 2013
e-pub ahead of print date: 22 October 2013
Published date: April 2014
Keywords:
geothermal, piled foundations, ground energy, thermal resistance, ground heat exchangers
Organisations:
Infrastructure Group
Identifiers
Local EPrints ID: 357088
URI: http://eprints.soton.ac.uk/id/eprint/357088
ISSN: 0375-6505
PURE UUID: eae1da58-5cd9-4f40-8c4e-3a12da784eb2
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Date deposited: 04 Oct 2013 12:17
Last modified: 15 Mar 2024 02:48
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