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Use of distributed temperature sensing (DTS) coupled to ground source heat exchangers for geological thermo-stratigraphic correlation

Author

Listed:
  • Violante, Anna Carmela
  • Guidi, Giambattista
  • Proposito, Marco
  • Mataloni, Simone
  • Spaziani, Fabio

Abstract

The thermal characterisation of a geosonde field, consisting of four boreholes at the ENEA-Casaccia Research Centre (Rome, Italy), was carried out by processing the temperature values measured by DTS (Distributed Temperature Sensing) fibre optics positioned vertically in each well. By correlating the vertical temperature profiles, it was possible to estimate the thermal conductivity of each stratigraphic level and the contribution of the groundwater on the heat exchange between ground and geothermal probes. The theoretical model has been confirmed by the experimental data obtained through direct measurement of thermal conductivity on soil/rock samples collected at different depths.

Suggested Citation

  • Violante, Anna Carmela & Guidi, Giambattista & Proposito, Marco & Mataloni, Simone & Spaziani, Fabio, 2024. "Use of distributed temperature sensing (DTS) coupled to ground source heat exchangers for geological thermo-stratigraphic correlation," Renewable Energy, Elsevier, vol. 225(C).
    • Handle: RePEc:eee:renene:v:225:y:2024:i:c:s0960148124003070
    DOI: 10.1016/j.renene.2024.120242
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