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04 August 2014
Article (Scientific journals)
Geophysical Methods for Monitoring Temperature Changes in Shallow Low Enthalpy Geothermal Systems
Hermans, Thomas  ; Nguyen, Frédéric  ; Robert, Tanguy  et al.
2014 • In Energies, 7, p. 5083-5118
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Keywords :
electrical resistivity tomography; self-potential method; distributed temperature sensing; temperature monitoring
Abstract :
[en] Low enthalpy geothermal systems exploited with ground source heat pumps or groundwater heat pumps present many advantages within the context of sustainable energy use. Designing, monitoring and controlling such systems requires the measurement of spatially distributed temperature fields and the knowledge of the parameters governing groundwater flow (permeability and specific storage) and heat transport (thermal conductivity and volumetric thermal capacity). Such data are often scarce or not available. In recent years, the ability of electrical resistivity tomography (ERT), self-potential method (SP) and distributed temperature sensing (DTS) to monitor spatially and temporally temperature changes in the subsurface has been investigated. We review the recent advances in using these three methods for this type of shallow applications. A special focus is made regarding the petrophysical relationships and on underlying assumptions generally needed for a quantitative interpretation of these geophysical data. We show that those geophysical methods are mature to be used within the context of temperature monitoring and that a combination of them may be the best choice regarding control and validation issues.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Hermans, Thomas ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Nguyen, Frédéric ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Robert, Tanguy ;  Aquale SPRL
Revil, André
Language :
English
Title :
Geophysical Methods for Monitoring Temperature Changes in Shallow Low Enthalpy Geothermal Systems
Publication date :
2014
Journal title :
Energies
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Switzerland
Volume :
7
Pages :
5083-5118
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Fondation Roi Baudouin - Prix Ernest Dubois

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