Di Donna, A, Loveridge, F orcid.org/0000-0002-6688-6305, Piemontese, M et al. (1 more author) (2021) The role of ground conditions on the heat exchange potential of energy walls. Geomechanics for Energy and the Environment, 25. 100199. ISSN 2352-3808
Abstract
Geotechnical structures are being increasingly employed, in Europe as all around the world, to exchange heat with the ground and supply thermal energy for heating and cooling of buildings and de-icing of infrastructure. Most current practical applications are related to energy piles, but embedded retaining walls are now also being adopted. However, analysis and design methods for these new dual use foundations and ground heat exchangers are currently lacking, making it hard to provide estimates of energy availability without recourse to full numerical simulation. This paper helps to fill this gap by using coupled thermo-hydro finite element analysis to develop charts of energy capacity that could be applied at the outline design stage for energy walls. In particular, the influence of ground properties (hydraulic and thermal conductivities), and ground conditions, (groundwater temperature and flow velocity) are investigated with the results showing that the hydrogeological conditions and the temperature difference between the ground source and application temperature are especially important in determining the performance of the energy wall.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Authors. This is an open access article under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/) | ||||||
Keywords: | Energy geotechnics, Shallow geothermal energy, Numerical methods, Sustainable development, Diaphragm walls, Energy walls | ||||||
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: |
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Depositing User: | Symplectic Publications | ||||||
Date Deposited: | 11 Jun 2020 10:16 | ||||||
Last Modified: | 08 Jun 2021 15:20 | ||||||
Status: | Published | ||||||
Publisher: | Elsevier BV | ||||||
Identification Number: | https://doi.org/10.1016/j.gete.2020.100199 |