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Techno-Economic Mapping for the Improvement of Shallow Geothermal Management in Southern Switzerland

Author

Listed:
  • Rodolfo Perego

    (Institute of Earth Sciences, University of Applied Sciences and Arts of Southern Switzerland SUPSI, Campus Trevano, CH-6952 Canobbio, Switzerland)

  • Sebastian Pera

    (Institute of Earth Sciences, University of Applied Sciences and Arts of Southern Switzerland SUPSI, Campus Trevano, CH-6952 Canobbio, Switzerland)

  • Antonio Galgaro

    (Department of Geosciences, University of Padova, Via Gradenigo, 6, 35131 Padova, Italy)

Abstract

Cantone Ticino, a mountainous region located in the southern part of Switzerland, is greatly affected by the continuous growth of subsurface exploitation through the use of both closed-loop and open-loop geothermal systems. In this study, techno-economic maps for shallow geothermal potential of Cantone Ticino are produced, considering closed-loop systems. The work starts with the identification of the main parameters affecting the techno-economic potential such as GST and thermal conductivity. Maps for different indicators of techno-economic feasibility are created and compared against real data/measurements. An empirical method is tailored to derive a map of the techno-economic geothermal potential, expressed as meters required to provide 1 kW of installed power. The produced map shows an overall discrepancy from real installed length data of approximately ±23%. Moreover, compared with current regulation, the produced maps show an unoptimized management of the shallow geothermal resource, since high potential zones are commonly located where the installation of BHE is not permitted and often closed-loop systems are installed where the estimated potential is lower, mainly in alluvial fans. In light of these considerations, the authorization process in Cantone Ticino for BHE should be revised taking into account the real techno-economic potential.

Suggested Citation

  • Rodolfo Perego & Sebastian Pera & Antonio Galgaro, 2019. "Techno-Economic Mapping for the Improvement of Shallow Geothermal Management in Southern Switzerland," Energies, MDPI, vol. 12(2), pages 1-24, January.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:2:p:279-:d:198361
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    Citations

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    Cited by:

    1. Elisa Heim & Marius Laska & Ralf Becker & Norbert Klitzsch, 2022. "Estimating the Subsurface Thermal Conductivity and Its Uncertainty for Shallow Geothermal Energy Use—A Workflow and Geoportal Based on Publicly Available Data," Energies, MDPI, vol. 15(10), pages 1-19, May.
    2. Adela Ramos-Escudero & María del Socorro García-Cascales, 2022. "Barriers behind the Retarded Shallow Geothermal Deployment in Specific Areas: A Comparative Case Study between Southern Spain and Germany," Energies, MDPI, vol. 15(13), pages 1-16, June.
    3. Perego, Rodolfo & Viesi, Diego & Pera, Sebastian & Dalla Santa, Giorgia & Cultrera, Matteo & Visintainer, Paola & Galgaro, Antonio, 2020. "Revision of hydrothermal constraints for the installation of closed-loop shallow geothermal systems through underground investigation, monitoring and modeling," Renewable Energy, Elsevier, vol. 153(C), pages 1378-1395.
    4. Abdelazim Abbas Ahmed & Mohsen Assadi & Adib Kalantar & Tomasz Sliwa & Aneta Sapińska-Śliwa, 2022. "A Critical Review on the Use of Shallow Geothermal Energy Systems for Heating and Cooling Purposes," Energies, MDPI, vol. 15(12), pages 1-22, June.
    5. Walch, Alina & Mohajeri, Nahid & Gudmundsson, Agust & Scartezzini, Jean-Louis, 2021. "Quantifying the technical geothermal potential from shallow borehole heat exchangers at regional scale," Renewable Energy, Elsevier, vol. 165(P1), pages 369-380.
    6. Galgaro, A. & Di Sipio, E. & Carrera, A. & Dalla Santa, G. & Escudero, A. Ramos & Cuevas, J.M. & Pasquali, R. & Sanner, B. & Bernardi, A., 2022. "European and municipal scale drillability maps: A tool to identify the most suitable techniques to install borehole heat exchangers (BHE) probes," Renewable Energy, Elsevier, vol. 192(C), pages 188-199.
    7. Tomasz Sliwa & Tomasz Kowalski & Dominik Cekus & Aneta Sapińska-Śliwa, 2021. "Research on Fresh and Hardened Sealing Slurries with the Addition of Magnesium Regarding Thermal Conductivity for Energy Piles and Borehole Heat Exchangers," Energies, MDPI, vol. 14(16), pages 1-13, August.
    8. Walch, Alina & Li, Xiang & Chambers, Jonathan & Mohajeri, Nahid & Yilmaz, Selin & Patel, Martin & Scartezzini, Jean-Louis, 2022. "Shallow geothermal energy potential for heating and cooling of buildings with regeneration under climate change scenarios," Energy, Elsevier, vol. 244(PB).

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