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Experimental assessment and prediction of short-term aquifer thermal energy storage for energy demand-side management applications
Robert, Tanguy  ; Hermans, Thomas; Lesparre, Nolwenn et al.
2018 • IAH 2018
 

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Keywords :
ATES; modeling; experimental design
Abstract :
[en] Groundwater heat pump (GWHP) systems are now widely used for space heating and cooling and domestic hot water production. On one hand, GWHP systems are considered as a renewable energy and on the other hand, their increasing use impacts electrical grid balancing. Since the coupling of electrically-driven heating, ventilation, and air-conditioning (HVAC) systems with thermal energy storage (TES) is seen as a promising tool for demand-side management (DSM) in the low-voltage grid, experimental validation of aquifer thermal energy storage (ATES) capabilities at demand side management (DSM) frequencies (real time, intraday, interday, and interseasonal) is needed for the sector to adopt it. We demonstrated here that hourly to daily ATES can be efficient in terms of energy recovery rate and exergy whereas weekly to seasonal ATES bears the risk of lower recovery rates and presents almost always low exergy. Moreover, energy recovery rates are improved with the increasing use of storage and recovery cycles. To formulate this demonstration, we emulated the operating conditions of GWHP systems with ATES in several well-characterized experimental pilot sites in Wallonia. The standardized experiment we used to estimate the different hydrodynamic parameters and energy recovery at the pilot sites was based on push/pull tests with the injection of heated water, its storage for different DSM periods, and finally its recovery. Fluxes were either measured in-situ by means of the finite volume point dilution method or estimated with the local hydraulic conductivity and gradient. We report here a direct relationship between the energy recovery rate and natural groundwater fluxes.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Robert, Tanguy ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Hermans, Thomas;  Universiteit Gent - UGent > Department of Geology
Lesparre, Nolwenn;  Université de Strasbourg > École et observatoire des sciences de la Terre
Nguyen, Frédéric ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Paulus, Claire;  Université Catholique de Louvain - UCL > Ecole Polytechnique de Louvain (EPL) > 2015
Bolly, Pierre-Yves;  Université Catholique de Louvain - UCL > Ecole Polytechnique de Louvain (EPL)
Defourny, Agathe ;  Université de Liège - ULiège > Master ingé. civ. mines & géol., à fin.
Jamin, Pierre ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Orban, Philippe  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Brouyère, Serge  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Dassargues, Alain  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Experimental assessment and prediction of short-term aquifer thermal energy storage for energy demand-side management applications
Publication date :
10 September 2018
Event name :
IAH 2018
Event organizer :
Korean Chapter of the International Association of Hydrogeologists
Event place :
Daejeon, South Korea
Event date :
du 10 septembre 2018 au 14 septembre 2018
Audience :
International
References of the abstract :
FP-102 - T9.3 Low and high temperature geothermal energy
Name of the research project :
ATHENA: Assessment & optimization of short-term aquifer thermal energy storage for demand side management applications
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique

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