Three-dimensional analysis of multiple inclined borehole heat exchangers

被引：0

作者：

Deacon, D.L. ^{[1
]}

Lightstone, M.F. ^{[1
]}

机构：

[1] McMaster University, 1280 Main St W, Hamilton,ON,L8S 4L8, Canada

来源：

Renewable Energy | 2024年 / 237卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Digital elevation model - Geothermal heat pumps - Geothermal heating - Heat transfer performance;

D O I：

10.1016/j.renene.2024.121618

中图分类号：

学科分类号：

摘要：

This research develops and applies a numerical modelling method for inclined borehole heat exchangers (BHE) in ground-source heat pump systems. Inclined BHEs have the advantage of reducing the ground-level footprint of the overall BHE field. Computational modelling of the ground heat transfer using the commercial code COMSOL Multiphysics has revealed that inclined BHEs offer additional performance benefits compared to vertical BHE fields. When heat is injected constantly, both types of fields perform similarly at first, but over a longer period of time, the inclined BHE fields show significant benefits due to the increased ground volume in the deeper portion of the field. Similar conclusions are reached when transient loading conditions are considered. Notably, when cooling dominates, inclined BHE fields outperform vertical ones for a simulated period of 10 years. This indicates that inclined BHE fields are better equipped to handle imbalanced energy loads. To summarize, inclined BHE fields offer advantages in ground-volume utilization and resilience to energy load imbalances compared to vertical fields. © 2024 The Authors

引用

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