Viera, A, Alberdi-Paolga, M, Christodoulides, P et al. (16 more authors) (2017) Characterisation of ground thermal and thermo-mechanical behaviour for shallow geothermal energy applications. Energies, 10 (12). 2044. ISSN 1996-1073
Abstract
Increasing use of the ground as a thermal reservoir is expected in the near future. Shallow geothermal energy (SGE) systems have proved to be sustainable alternative solutions for buildings and infrastructure conditioning in many areas across the globe in the past decades. Recently novel solutions, including energy geostructures, where SGE systems are coupled with foundation heat exchangers, have also been developed. The performance of these systems is dependent on a series of factors, among which the thermal properties of the soil play one of major roles. The purpose of this paper is to present, in an integrated manner, the main methods and procedures to assess ground thermal properties for SGE systems and to carry out a critical review of the methods. In particular, laboratory testing through either steady-state or transient methods are discussed and a new synthesis comparing results for different techniques is presented. In-situ testing including all variations of the thermal response test is presented in detail, including a first comparison between new and traditional approaches. The issue of different scales between laboratory and in-situ measurements is then analysed in detail. Finally, thermo-hydro-mechanical behaviour of soil is introduced and discussed. These coupled processes are important for confirming the structural integrity of energy geostructures, but routine methods for parameter determination are still lacking.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0). |
Keywords: | shallow geothermal systems; soil thermal behavior; laboratory testing; in-situ testing; thermo-mechanical behaviour |
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 Royal Academy of Engineering RF116 |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Nov 2017 17:21 |
Last Modified: | 23 Jun 2023 22:40 |
Status: | Published |
Publisher: | MDPI |
Identification Number: | 10.3390/en10122044 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:124507 |