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Lookup NU author(s): Dr Anil YildizORCiD
This is the authors' accepted manuscript of an article that has been published in its final definitive form by ICE Publishing, 2020.
For re-use rights please refer to the publisher's terms and conditions.
The efficiency of shallow ground heat exchangers is controlled by the thermal conductivity of the soil they are placed in, which is predominantly a function of soil type, mineralogy, density and water content. As such systems are placed at shallow depths where hydrological regime is highly fluctuant due to rainfall and evaporation, it is important to have soil-specific information on how thermal conductivity changes with water content. There are numerous models available in the literature, most of which are not able to define the full range of the thermal conductivity dryout curve (TCDC) with a single equation. This study suggests a modified sigmoid curve to define the TCDC, and introduces yet another statistical model to estimate the fitting parameters of the equation. Validation using data from the literature shows that the model is capable of producing the full range of TCDC for soils with 90% and less sand content.
Author(s): Yildiz A
Publication type: Article
Publication status: Published
Journal: Géotechnique Letters
Year: 2020
Volume: 10
Issue: 3
Pages: 1-5
Print publication date: 01/09/2020
Online publication date: 03/07/2020
Acceptance date: 03/07/2020
Date deposited: 10/08/2020
ISSN (electronic): 2045-2543
Publisher: ICE Publishing
URL: https://doi.org/10.1680/jgele.20.00055
DOI: 10.1680/jgele.20.00055
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