渗流条件下群孔双U型地埋管换热器换热特性研究

胡万瑞; 田成富; 刘恒; 李鹏; 关鹏; 段新胜

doi:10.19912/j.0254-0096.tynxb.2025-0776

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渗流条件下群孔双U型地埋管换热器换热特性研究

更新时间：2026-10-15

- 渗流条件下群孔双U型地埋管换热器换热特性研究
- 渗流条件下群孔双U型地埋管换热器换热特性研究
- 太阳能学报 2026年47卷第9期页码：20-27
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- DOI：10.19912/j.0254-0096.tynxb.2025-0776
  中图分类号： TK529
- 网络首发：2026-10-10，
  
  纸质出版：2026
- 稿件说明：
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胡万瑞, 田成富, 刘恒, 等. 渗流条件下群孔双U型地埋管换热器换热特性研究[J]. 太阳能学报, 2026,47(9):20-27.

胡万瑞, 田成富, 刘恒, et al. 渗流条件下群孔双U型地埋管换热器换热特性研究[J]. 2026, 47(9): 20-27.
胡万瑞, 田成富, 刘恒, 等. 渗流条件下群孔双U型地埋管换热器换热特性研究[J]. 太阳能学报, 2026,47(9):20-27. DOI： 10.19912/j.0254-0096.tynxb.2025-0776.

胡万瑞, 田成富, 刘恒, et al. 渗流条件下群孔双U型地埋管换热器换热特性研究[J]. 2026, 47(9): 20-27. DOI： 10.19912/j.0254-0096.tynxb.2025-0776.

摘要

基于数值模拟技术

建立考虑渗流影响的双U型群孔地埋管换热器传热模型

分析渗流场及地温场演化规律

并对影响换热效果的渗流因素开展敏感性分析。结果表明

无地下水渗流时

群孔地埋管换热器之间互相干扰

并在中心区域产生严重的冷堆积

不利于换热。而渗流的存在大大减轻了冷堆积

并在垂直渗流方向上

各地埋管换热不再互相干扰

只在渗流方向上上游影响下游。地埋管换热器换热效率对渗流层的厚度敏感性最强

渗流速度次之

渗流方向最弱。

Abstract

This study employs numerical simulation to establish a heat transfer model for a group of double U-shaped borehole heat exchangers （BHEs）

incorporating the influence of groundwater seepage. The evolution patterns of the seepage field and ground temperature field are analyzed

along with a sensitivity assessment of key seepage-related factors affecting heat transfer performance. The results reveal that in the absence of groundwater seepage

thermal interference between adjacent BHEs leads to significant cold accumulation in the central region

impairing heat transfer efficiency. However

the presence of seepage substantially mitigates cold accumulation. Along the direction perpendicular to seepage flow

thermal interference between BHEs is negligible

with heat transfer influence oscutting only from upstream to downstram alony the seepage direction. Sensitivity analysis indicates that the thickness of the seepage layer has the most pronounced impact on BHE heat transfer efficiency

followed by seepage velocity

while the seepage direction exhibits the weakest influence.

关键词

Keywords

references

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