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Titel |
Screening for suitable areas for Aquifer Thermal Energy Storage within the
Brussels Capital Region, Belgium using coupled groundwater flow and heat
transport modelling tools |
VerfasserIn |
Christian Anibas, Janik Kukral, Syed Md Touhidul Mustafa, Marijke Huysmans |
Konferenz |
EGU General Assembly 2017
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Medientyp |
Artikel
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Sprache |
en
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 19 (2017) |
Datensatznummer |
250152255
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Publikation (Nr.) |
EGU/EGU2017-17070.pdf |
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Zusammenfassung |
Urban areas have a great potential for shallow geothermal systems. Their energy demand is
high, but currently they have only a limited potential to cover their own energy demand. The
transition towards a low-carbon energy regime offers alternative sources of energy an
increasing potential. Urban areas however pose special challenges for the successful
exploitation of shallow geothermal energy. High building densities limit the available space
for drillings and underground investigations. Urban heat island effects and underground
structures influence the thermal field, groundwater pollution and competing water uses limit
the available subsurface. To tackle these challenges in the Brussels Capital Region, Belgium
two projects ‘BruGeo’ and the recently finished ‘Prospective Research of Brussels project
2015-PRFB-228’ address the investigation in urban geothermal systems. They aim to
identify the key factors of the underground with respect to Aquifer Thermal Energy
Storage (ATES) installations like thermal properties, aquifer thicknesses, groundwater
flow velocities and their heterogeneity. Combined numerical groundwater and heat
transport models are applied for the assessment of both open and closed loop shallow
geothermal systems. The Brussels Capital Region comprises of the Belgian Capital,
the City of Brussels and 18 other municipalities covering 161 km2 with almost
1.2 million inhabitants. Beside the high population density the Brussels Capital
Region has a pronounced topography and a relative complex geology. This is both a
challenge and an opportunity for the exploitation of shallow geothermal energy.
The most important shallow hydrogeological formation in the Brussels-Capital
Region are the Brussels Sands with the Brussels Sands Aquifer. Scenarios where
developed using criteria for the hydrogeological feasibility of ATES installations such as
saturated aquifer thickness, groundwater flow velocity and the groundwater head
below surface. The Brussels Sands Formation is covering almost 8000 ha, roughly
the half of the Brussels Capital Region. In an optimistic scenario (i.e. all criteria
show acceptable or favorable conditions) around 80% of the 8000 ha is suitable for
ATES. This is an indication for the considerable potential for ATES installations
in the Brussels Capital Region. Results of the research will lead to quantitative
spatial output about the potential of shallow geothermal energy use in the Region. |
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