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+34 93 401 18 60This email address is being protected from spambots. You need JavaScript enabled to view it.
UPC: C/ Jordi Girona 31, (08034 - Barcelona) - IDAEA: C/ Jordi Girona 18-26, (08034 - Barcelona)

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Ponencia: Thermal impact on reactive transport processes in Underground Thermal Energy Storage

Ciclo de webinars gratuitos en Hidrogeología y Geoquímica
TODOS LOS JUEVES en directo en: https://meet.google.com/snb-qdkn-eex   
 
GRUPO DE HIDROLOGÍA SUBTERRÁNEA
(Unidad asociada CSIC-UPC)

 

Esta semana: Jueves 25 de noviembre a las 12:15h
 
Ponente: Ruben Vidal
Ponencia:Thermal impact on reactive transport processes in Underground Thermal Energy Storage


Abstract:
Heating and cooling sector consumes half of total energy in Europe. Most
of the energy used comes from fossil fuels. Heat storage can contribute
to the extension of low-carbon heat sources by providing flexibility in
the management of supply and demand of heat. Underground Thermal Energy
Storage (UTES) technologies store energy by injecting heat into the
underground. The variation of temperature applied to the underground can
lead to chemical reactions. These reactions can reduce the efficiency of
the UTES and modify the properties of soils and rocks. We propose a
semi-analytical solution in order to verify numerical models and to
understand the thermo-hydro-chemical processes in UTES. The solution is
a combination of the thermo-hydraulic results obtained with CODE_BRIGHT
and the chemicals results from PRHEEQC. We assume that there are only
aqueous and mineral reactions in equilibrium. The solution has been
applied to a HEATSTORE benchmark inspired by a UTES pilot project in
Bern. The project consists in injecting hot water into a deep aquifer
during summer and extracting hot water during winter. The solution
provides information about the precipitation and dissolution of minerals
in the aquifer and the governing processes: mixing, heat retardation and
heat conduction.

 
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