CIMNE Coffee Talk: “Storing Heat in Aquifers for the Energy Transition: Thermo-Hydro-Mechanical-Chemical Processes and Impacts in HT-ATES Systems” by Dr Rubén Vidal

06/05/2026
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3:00 pm
OCZ Conference Room, C1 Building, 1st Floor, UPC Campus Nord (Barcelona)
ABSTRACT

​High-Temperature Aquifer Thermal Energy Storage (HT-ATES) is a geothermal technology that enables the storage of energy from low-carbon heat sources, allowing its use despite fluctuations in energy supply and demand. This technology involves the injection of hot water into aquifers, triggering a series of coupled thermo-hydro-mechanical-chemical (THMC) processes.

This CIMNE Coffee Talk focuses on understanding the THMC processes and impacts involved in HT-ATES systems through the development of analytical solutions, dimensional analysis, and numerical modelling. The proposed methods provide new insights into the coupled THMC processes governing HT-ATES systems, enabling the identification of the dominant mechanisms controlling heat transport, geochemical reactions, and ground deformation. They also offer efficient tools for assessing system performance and long-term behaviour with significantly reduced computational cost.

Schematic diagram of a high‑temperature aquifer thermal energy storage system. A power plant connects to two wells: a blue upward arrow labeled “Cold Well” and a red downward arrow labeled “Hot Well.” Below the surface, an aquifer layer is shown with a color gradient from blue (cold) to orange (hot), illustrating heat injection and extraction in the subsurface.

SPEAKER

Rubén VidalDr Rubén Vidal Montes holds a degree in Geological Engineering from the University of Salamanca (USAL), an MSc in Geological and Mining Engineering from the Polytechnic University of Catalonia (UPC), and a PhD in Geotechnical Engineering from UPC. His research focuses on analytical solutions, dimensional analysis and numerical modelling of coupled thermo-hydro-mechanical-chemical (THMC) processes related to geo-energy and geo-engineering applications. He has recently received the Spanish Society for Rock Mechanics Award for the best research contribution in rock mechanics, granted to young researchers.

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