Influence of Backfill on Performance of Ground Heat Exchanger

LI Long-jian; BAO Jian-zhen; LIAO Quan; CUI Wen-zhi

doi:10.11835/j.issn.1674-4764.2011.05.015

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Influence of Backfill on Performance of Ground Heat Exchanger

更新时间：2023-11-28

- Influence of Backfill on Performance of Ground Heat Exchanger
- Journal of Civil and Environmental Engineering Vol. 33, Issue 5, Pages: 90-94(2011)
- 作者机构：
  
  重庆大学低品位能源利用技术及系统教育部重点实验室,重庆,400044
- 作者简介：
- 基金信息：
- DOI：10.11835/j.issn.1674-4764.2011.05.015
  CLC：
- Published：2011
- 稿件说明：
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LI Long-jian, BAO Jian-zhen, LIAO Quan, et al. Influence of Backfill on Performance of Ground Heat Exchanger[J]. Journal of Civil and Environmental Engineering, 2011, 33(5): 90-94.
DOI：

LI Long-jian, BAO Jian-zhen, LIAO Quan, et al. Influence of Backfill on Performance of Ground Heat Exchanger[J]. Journal of Civil and Environmental Engineering, 2011, 33(5): 90-94. DOI： 10.11835/j.issn.1674-4764.2011.05.015.

摘要

采用了地埋管换热器三维非稳态耦合传热的物理数学模型

针对实际的地埋管结构和热响应测试工况进行了相应的数值模拟。将模拟计算结果与TRT热响应测试结果进行了比较

验证了所建模型的正确性。在此基础上

考察了地埋管换热器回填料导热系数及比热等物性参数对地埋管换热器性能的影响关系

为热响应测试以及工程设计提供有益的理论指导。

Abstract

The physical and mathematical model of three dimensional unsteady coupled heat transfer in the ground heat exchanger is proposed

and corresponding numerical simulations for actual ground heat exchanger and operation condition are carried out. The computed results are compared with those of the thermal resistance test of the ground heat exchanger

which proves the correctness of the model and corresponding numerical methods. Then

the effects of thermal conductivity and specific heat of the ground backfill material on the ground heat exchanger are investigated

which provides theoretical guidance for the thermal response test and the engineering design of the ground heat exchanger.

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