Article de revue (2018)
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Abstract
Numerical methods are proposed for the efficient evaluation of the g-functions of geothermal bore fields using the finite line source solution. The presented methods reduce the calculation time for the calculation of g-functions by reducing the number of numerical evaluations of the analytical finite line source solution. A similarity identification method is presented to identify pairs of boreholes for which the finite line source solution takes the same value. A load history reconstruction method is presented to evaluate the g-function at non-uniform time-steps. Using the proposed numerical methods, the calculation time for the g-function of a rectangular field of 12 × 12 boreholes is reduced by a factor 308. The numerical methods allow the evaluation of g-functions of bore fields with large amounts of boreholes in irregular configurations. The g-function of a field of 512 randomly positioned boreholes is calculated in 27 minutes.
Mots clés
geothermal boreholes, ground heat exchangers, g-functions, thermal response factors, finite line source
| Sujet(s): |
2100 Génie mécanique > 2100 Génie mécanique 2300 Combustibles et technologie de l'énergie > 2303 Autres sources d'énergie (combustibles solaire, éolien, etc.) |
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| Département: | Département de génie mécanique |
| Organismes subventionnaires: | FRQNT |
| Numéro de subvention: | 2015-B3-181989 |
| URL de PolyPublie: | https://publications.polymtl.ca/3000/ |
| Titre de la revue: | Journal of Building Performance Simulation (vol. 11, no 6) |
| Maison d'édition: | Taylor & Francis |
| DOI: | 10.1080/19401493.2017.1423390 |
| URL officielle: | https://doi.org/10.1080/19401493.2017.1423390 |
| Date du dépôt: | 16 nov. 2018 12:10 |
| Dernière modification: | 06 avr. 2024 16:01 |
| Citer en APA 7: | Cimmino, M. (2018). Fast calculation of the g-functions of geothermal borehole fields using similarities in the evaluation of the finite line source solution. Journal of Building Performance Simulation, 11(6), 655-668. https://doi.org/10.1080/19401493.2017.1423390 |
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