Autor: Rubén Vidal
Título: Heat storage efficiency, ground surface uplift and thermo-hydro-mechanical phenomena for High Temperature Aquifer Thermal Energy Storage.
Abstract:
High Temperature Aquifer Thermal Energy Storage (HT-ATES) systems canhelp in balancing energy demand and supply for better use ofinfrastructures and resources. The aim of these systems is to store highamounts of heat to be reused later. HT-ATES requires addressing problemssuch as variations of the properties of the aquifer, thermal losses andthe uplift of the surface. Coupled thermo-hydro-mechanical (THM)modelling is a good tool to analyse the viability and cost effectivenessof HT-ATES systems and to understand the interaction of processes, suchas heat flux, groundwater flow and ground deformation. The main problemof this modelling is its high computational cost. We propose adimensional and numerical analysis of the thermo-hydro-mechanicalbehaviour of a pilot HT-ATES. The results of this study have providedinformation about the dominant thermo-hydraulic fluxes, evolution of theenergy efficiency of the system and the role of the hydraulic andthermal loads generated by the injection and extraction of hot water.Vidal, R., Olivella, S., Saaltink, M.W. et al. Heat storage efficiency,ground surface uplift and thermo-hydro-mechanical phenomena forhigh-temperature aquifer thermal energy storage.
