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| Titel |
Technically exploitable geothermal energy by using Borehole Heat Exchangers: A revisit of the Cologne case |
| VerfasserIn |
Haibing Shao, Philipp Hein, Anke Bucher, Olaf Kolditz |
| 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 |
250144541
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| Publikation (Nr.) |
 EGU/EGU2017-8379.pdf |
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| Zusammenfassung |
| In previous studies, the amount of shallow geothermal energy was estimated by assuming
a uniform temperature drop of at least 2 ∘C in the aquifer. In this work, a more
comprehensive numerical model has been employed to evaluate the technically exploitable
geothermal energy by using Borehole Heat Exchanger coupled Ground Source Heat
Pump systems. A case study on the city of Cologne was revisited, adopting the
same hydrogeological conditions and simulating the long-term evolution of the
subsurface temperature field subject to the operation of borehole heat exchangers.
It is found that the cities’ heating demand could potentially be fully covered by
BHE-coupled GSHP systems. The resulting equivalent uniform temperature drop is then
around 1.6 ∘C . It was also found that utilising geothermal energy will lead to at
least 50% reduction of CO2 equivalent emission in comparison to conventional
district heating, depending on the source of electricity used for heat pump operation. |
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