A review on heat transfer performance and thermal-force response of energy piles

XIE Jinli; QIN Yinghong; LI Yingpeng; MENG Xianglin; TAN Kanghao; ZHANG Xingyue

doi:10.11835/j.issn.2096-6717.2021.084

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A review on heat transfer performance and thermal-force response of energy piles

Civil Engineering | 更新时间：2023-06-25

- A review on heat transfer performance and thermal-force response of energy piles
- Journal of Civil and Environmental Engineering Vol. 45, Issue 1, Pages: 155-166(2023)
- 作者机构：
  
  1.广西大学土木建筑工程学院；工程防灾与结构安全教育部重点实验室，南宁 530004
  2.桂林理工大学土木与建筑工程学院，广西桂林 541000
  3.广西交通投资集团有限公司，南宁 530022
- 作者简介：
  
  XIE Jinli (1996- ), main research interests: development and application of the energy pile technology, E-mail: jinli_xie@163.com.
  QIN Yinghong （corresponding author）， professor， doctorial suoervisor， E-mail： haokangtan@163.com
- 基金信息：
  
  Innovation Project of Guangxi Graduate Education(YCBZ2021022);High-Level Innovation Team and Outstanding Scholar Program in Guangxi Colleges
- DOI：10.11835/j.issn.2096-6717.2021.084
  CLC： TU473.1
- Received：30 December 2020，
  
  Published：25 February 2023
- 稿件说明：
移动端阅览
XIE Jinli, QIN Yinghong, LI Yingpeng, et al. A review on heat transfer performance and thermal-force response of energy piles[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 155-166.
DOI：

XIE Jinli, QIN Yinghong, LI Yingpeng, et al. A review on heat transfer performance and thermal-force response of energy piles[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 155-166. DOI： 10.11835/j.issn.2096-6717.2021.084.

摘要

能源桩将地源热泵系统与传统桩基结合，具有换热效率高、占用空间少和成本低等优点。梳理近年来关于能源桩的传热和承载性能两个方面的研究进展，分析能源桩传热性能的影响因素及机理、热—力耦合状态下的结构响应及传热、结构响应的数值模型。在此基础上，提出能源桩下一步的研究建议与展望。分析指出：螺旋形管体的换热面积最大，换热效率最佳；在循环剪切作用下，能源桩的桩—土界面侧摩阻力衰减，使桩基承载力不断弱化；此外，一个周期中的制冷/制热需求不均可能引起地表温度失衡，从而影响换热效率。能源桩的优化设计及长期服役的可靠性将是未来研究的重点。

Abstract

Energy pile combines the ground source heat pump system with the traditional pile foundation

which has the advantages of high heat exchange efficiency

less space occupation and low cost. This paper summarizes the latest research results on heat transfer and bearing performance of energy piles at home and abroad

and analyzes the influencing factors and mechanism of heat transfer performance

structural response under thermal-force coupling and numerical models of heat transfer and structural response of energy piles. Based on this basis

the next research suggestions and prospect of energy pile are put forward. The analysis indicates that the largest heat exchange area of the spiral tube and the best heat exchange efficiency; under the action of cyclic shear at the pile-soil interface

the lateral friction resistance attenuates

which continuously weakens the bearing capacity of the energy piles. Moreover

the uneven refrigeration/heating demand in one cycle may cause the surface temperature imbalance

thus affecting the heat exchange efficiency. Therefore

the optimized design of energy piles and the reliability of long-term service will be the focus of future research.

关键词

Keywords

references

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