Loveridge, F orcid.org/0000-0002-6688-6305 and Powrie, W (2013) Pile heat exchangers: thermal behaviour and interactions. Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 166 (2). pp. 178-196. ISSN 1353-2618
Abstract
Thermal piles – that is structural foundation piles also used as heat exchangers as part of a ground energy system – are increasingly being adopted for their contribution to more sustainable energy strategies for new buildings. Despite over a quarter of a century having passed since the installation of the first thermal piles in northern Europe, uncertainties regarding their behaviour remain. This paper identifies the key factors which influence the heat transfer and thermal–mechanical interactions of such piles. In terms of heat output, pile aspect ratio is identified as an important parameter controlling the overall thermal performance. Temperature changes in the concrete and surrounding ground during thermal pile operation will lead to additional concrete stresses and displacements within the pile–soil system. Consequently designers must ensure that temperatures remain within acceptable limits, while the pile geotechnical analysis should demonstrate that any adverse thermal stresses are within design safety factors and that any additional displacements do not affect the serviceability of the structure.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | piles & piling; renewable energy; thermal effects |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 Apr 2019 13:49 |
Last Modified: | 08 Apr 2019 13:49 |
Status: | Published |
Publisher: | Thomas Telford |
Identification Number: | 10.1680/geng.11.00042 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:104833 |