Article (Scientific journals)
Assessment of short-term aquifer thermal energy storage for demand-side management perspectives: Experimental and numerical developments
De Schepper, Guillaume; Paulus, Claire; Bolly, Pierre-Yves et al.
2019In Applied Energy, 242, p. 534-546
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Keywords :
Aquifer thermal energy storage; Demand-side management; Energy efficiency; Geophysics; Geothermics; Hydrogeological modeling; Aquifers; Demand side management; Electric utilities; Groundwater flow; Groundwater resources; Heat storage; Hydrogeology; Recovery; Storage management; Temperature; Thermal energy; Alluvial aquifers; Energy recovery rate; Groundwater heat pumps; Hydrogeological models; Stored thermal energy; Temperature differences; Geothermal energy
Abstract :
[en] In the context of demand-side management and geothermal energy production, our proposal is to store thermal energy in shallow alluvial aquifers at shorter frequencies than classical seasonal aquifer thermal energy storage. We first conducted a one-week experiment in a shallow alluvial aquifer, which is characterized by a slow ambient groundwater flow, to assess its potential for thermal energy storage and recovery. This experiment has shown that up to 90% of the stored thermal energy can be recovered and would therefore suggest that aquifer thermal energy storage could be considered for demand-side management applications. We then conceptualized, developed, and calibrated a deterministic 3D groundwater flow and heat transport numerical model representing our study site, and we simulated 77 different scenarios to further assess this potential. This has allowed us to demonstrate that low-temperature aquifer thermal energy storage (temperature differences of −4 K for precooling and 3, 6, and 11 K for preheating) is efficient with energy recovery rates ranging from 78 to 87%, in a single aquifer thermal energy storage cycle. High-temperature aquifer thermal energy storage (temperature differences between 35 and 65 K) presents lower energy recovery rates, from 53 to 71%, with all other parameters remaining equals. Energy recovery rates decrease with increasing storage duration and this decrease is faster for higher temperatures. Retrieving directly useful heat (without upgrading with a groundwater heat pump) using only a single storage and recovery cycle appears to be complicated. Nevertheless, there is room for aquifer thermal energy storage optimization in space and time with regard to improving both the energy recovery rates and the recovered absolute temperatures. © 2019 Elsevier Ltd
Disciplines :
Energy
Author, co-author :
De Schepper, Guillaume;  AQUALE sprl, R&D Department, Rue Ernest Montellier 22, 5380 Noville-les-Bois, Belgium
Paulus, Claire;  Raco bvba, Meylandtlaan 39, 3550 Heusden-Zolder, Belgium, UCLouvain, Louvain School of Engineering, Rue Archimède 1, Louvain-la-Neuve, 1348, Belgium
Bolly, Pierre-Yves;  AQUALE sprl, R&D Department, Rue Ernest Montellier 22, 5380 Noville-les-Bois, Belgium, UCLouvain, Louvain School of Engineering, Rue Archimède 1, Louvain-la-Neuve, 1348, Belgium
Hermans, Thomas ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Lesparre, Nolwenn;  University of Liège, Urban & Environmental Engineering, Quartier Polytech 1, Allée de la découverte 9, B52/3, Liège, 4000, Belgium, University of Strasbourg, Laboratoire d'hydrologie et de géochimie de Strasbourg (LHyGeS), CNRS UMR 7517, 1 Rue Blessig, Strasbourg, 67084, France
Robert, Tanguy ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Assessment of short-term aquifer thermal energy storage for demand-side management perspectives: Experimental and numerical developments
Publication date :
15 May 2019
Journal title :
Applied Energy
ISSN :
0306-2619
eISSN :
1872-9118
Publisher :
Elsevier Ltd
Volume :
242
Pages :
534-546
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
ATHENA
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Available on ORBi :
since 30 April 2019

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