| Issue |
E3S Web of Conf.
Volume 382, 2023
8th International Conference on Unsaturated Soils (UNSAT 2023)
|
|
|---|---|---|
| Article Number | 23007 | |
| Number of page(s) | 6 | |
| Section | Geoenvironmental and Geo Energy Applications of Unsaturated Soil Mechanism - Part II | |
| DOI | https://doi.org/10.1051/e3sconf/202338223007 | |
| Published online | 24 April 2023 | |
The performance of a Horizontal Ground Heat Exchanger (HGHE) under the seasonal ground energy storage behaviour
1 ICUBE, UMR 7357, CNRS, INSA de Strasbourg, 24 boulevard de la Victoire, 67084 Strasbourg, France
2 LEMTA – CNRS UMR 7563, Université de Lorraine, Vandoeuvre-lès-Nancy F-54500, France
3 School of Transportation Science and Technology, Harbin Institute of Technology, 15900 Harbin, China
A well-known backfill soil was considered to be used as the backfill substitutive material. The hydrothermal properties of the backfill material were estimated in laboratory and then injected in a numerical framework considering the atmosphere-soil-HGHE interaction. Numerical simulations were performed for a HGHE installed in the compacted backfill soil and the local materials. Two heat storage scenarios at three different installation depths were also investigated. The results show that an inlet fluid temperature of 50°C in summer increases highly the system performance (13.7% to 41.4%) while the improvement is less significant (0% to 4.8%) for the ambient inlet temperature scenario. A deeper installation depth increases also the system performance.
© The Authors, published by EDP Sciences, 2023
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