Maragna, C and Loveridge, F orcid.org/0000-0002-6688-6305 (2019) A resistive-capacitive model of pile heat exchangers with an application to thermal response tests interpretation. Renewable Energy, 138. pp. 891-910. ISSN 0960-1481
Abstract
Pile Heat Exchangers (PHE) are an attractive solution to reduce both costs and greenhouse gas emissions for new buildings. However, most state-or-the-art PHE thermal models overlook the heat capacitance of the pile concrete, which is known to be important in thermal analysis. A semi-analytical (SA) model accounting for the pile concrete inertia is developed and validated against a finite-element code. Analysis shows that accounting for PHE inertia always leads to higher performances compared to purely resistive models. Application of the model to interpretation of thermal response tests data allows estimates to be made of the minimum duration test required to obtain reliable values of ground and concrete conductivities.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2019, Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Renewable Energy. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Pile heat exchangers; thermal models; thermal response test; near surface geothermal energy; ground source heat pumps |
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) |
Funding Information: | Funder Grant number EPSRC EP/P001351/1 Royal Academy of Engineering RF116 |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Feb 2019 11:28 |
Last Modified: | 07 Feb 2020 01:38 |
Status: | Published |
Publisher: | Elsevier Ltd. |
Identification Number: | 10.1016/j.renene.2019.02.012 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:142264 |
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