Cheung, Mattias K., Ahmadfard, Mohammadamin et Dworkin, Seth B..
2025.
« Analytical simulation of the thermal behaviour of parallel-series configurations of helical steel piles ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
The high initial cost of boreholes required for ground source heat pump (GSHP) systems is prompting a search for more cost-effective alternatives. This paper explores the use of helical steel piles (HSPs) as dual-purpose geo-exchange systems, offering both structural support and thermal energy exchange capabilities, and presenting a more economical option compared to traditional boreholes. In this study, an analytical approach utilizing the finite line source (FLS) model is developed to examine and compare the thermal performance of HSPs in various configurations—parallel, series, and mixed. For each configuration, the model dynamically computes the heat transfer rate of each pile as well as the overall inlet fluid temperature of the pile configuration. The proposed method has been validated against literature-reported test cases, demonstrating its accuracy and efficiency. The results indicate that the thermal efficiency of HSPs is similar to that of boreholes, and in the studied test case, HSPs were shown to perform better when the configurations were identical. However, comparisons may become unfair and are not advisable when the heights of the boreholes and piles are different. Moreover, the efficiency of various pile configurations varies significantly with their series or parallel arrangements as well as their flow rates, suggesting that the selection of pile arrangement and operational parameters should be carefully considered to optimize performance.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:08 |
| Dernière modification: | 18 déc. 2025 15:08 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32373 |
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