Gascuel, Violaine 
ORCID: https://orcid.org/0000-0003-2926-5419; Raymond, Jasmin ORCID: https://orcid.org/0000-0002-7486-9185 et Rivard, Christine
(2024).
Dynamic modeling of intermediate depth geothermal systems.
In: International Ground Source Heat Pump Association, 28-30 mai 2024, Montréal, Canada.
Résumé
A code was developed to couple numerical models of geothermal doublets and deep borehole heat exchangers (DBHE) with a simple model for heat pumps responding to a monthly demand for heating and cooling a building. This code was used with the objective to compare the performance of systems repurposing one or two idle gas wells to install a DBHE or a doublet to heat a greenhouse. Both systems include several heat pumps, activated or deactivated according to the building energy demand. The fluid flow rate is also varied to adapt production to demand. Results show that, in theory, the doublet could supply more heat than the DBHE. Indeed, the doublet could heat a 6950 m2 greenhouse and provide ~70 % of the peak demand, while the DBHE would only heat a 2560 m² greenhouse with the same coverage of peak demand. However, a preliminary cost analysis shows that installing and operating a doublet over 30 years would cost almost twice as much as a DBHE, which should be factored into the decision.
| Type de document: | Document issu d'une conférence ou d'un atelier |
|---|---|
| Mots-clés libres: | deep borehole heat exchangers (DBHE); geothermal doublets; heat pumps; numerical models |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 07 mars 2025 20:10 |
| Dernière modification: | 07 mars 2025 20:10 |
| URI: | https://espace.inrs.ca/id/eprint/16045 |
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