Loveridge, F orcid.org/0000-0002-6688-6305, Holmes, G, Powrie, W et al. (1 more author) (2013) Thermal response testing through the Chalk aquifer in London, UK. Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 166 (2). pp. 197-210. ISSN 1353-2618
Abstract
Thermal conductivity of the ground is an important parameter in the design of ground energy systems, which have an increasing role to play in providing renewable heat to the built environment. For larger schemes, the bulk thermal conductivity of the ground surrounding the system is often determined in situ using a thermal response test. Although this test method is commonly used, its limitations are often not fully understood, leading to an over-simplistic interpretation that may fail to identify key facets of the ground thermal behaviour. These limitations are highlighted using data from an instrumented thermal response test carried out in a 150 m deep borehole in east London. It is shown that a single, unique value of bulk thermal conductivity may not be appropriate, as stratification of the ground can lead to differences in thermal performance, depending on the direction of heat flow. Groundwater flow within the Chalk aquifer is also shown to have an important effect on the long-term heat transfer characteristics.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Groundwater; 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 13:43 |
Last Modified: | 08 Apr 2019 13:43 |
Status: | Published |
Publisher: | Thomas Telford |
Identification Number: | 10.1680/geng.12.00037 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:104832 |