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Geophysical methods for monitoring temperature changes in shallow low enthalpy geothermal systems

(2014) ENERGIES. 7(8). p.5083-5118
Author
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Abstract
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.
Keywords
electrical resistivity tomography, self-potential method, distributed temperature sensing, temperature monitoring, ELECTRICAL-RESISTIVITY TOMOGRAPHY, UNSATURATED POROUS MATERIALS, THERMAL-ENERGY STORAGE, HEAT-PUMP SYSTEMS, AFFECTED ZONE TAZ, GROUNDWATER DISCHARGE, SENSITIVITY-ANALYSIS, UNCONFINED AQUIFER, CROSS-BOREHOLE, GWHP SYSTEM

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Chicago
Hermans, Thomas, Frédéric Nguyen, Tanguy Robert, and André Revil. 2014. “Geophysical Methods for Monitoring Temperature Changes in Shallow Low Enthalpy Geothermal Systems.” Energies 7 (8): 5083–5118.
APA
Hermans, Thomas, Nguyen, F., Robert, T., & Revil, A. (2014). Geophysical methods for monitoring temperature changes in shallow low enthalpy geothermal systems. ENERGIES, 7(8), 5083–5118.
Vancouver
1.
Hermans T, Nguyen F, Robert T, Revil A. Geophysical methods for monitoring temperature changes in shallow low enthalpy geothermal systems. ENERGIES. 2014;7(8):5083–118.
MLA
Hermans, Thomas, Frédéric Nguyen, Tanguy Robert, et al. “Geophysical Methods for Monitoring Temperature Changes in Shallow Low Enthalpy Geothermal Systems.” ENERGIES 7.8 (2014): 5083–5118. Print.
@article{8539853,
  abstract     = {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.},
  author       = {Hermans, Thomas and Nguyen, Fr{\'e}d{\'e}ric and Robert, Tanguy and Revil, Andr{\'e}},
  issn         = {1996-1073},
  journal      = {ENERGIES},
  language     = {eng},
  number       = {8},
  pages        = {5083--5118},
  title        = {Geophysical methods for monitoring temperature changes in shallow low enthalpy geothermal systems},
  url          = {http://dx.doi.org/10.3390/en7085083},
  volume       = {7},
  year         = {2014},
}

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