Use of retaining wall anchors as geothermal heat exchangers

R. Moffat, P. Reszka, Mauricio Toledo
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Abstract

A novel application of retaining wall anchors as heat exchangers is proposed as an alternative or complement to pile geothermal exchangers. A fullscale in-situ study using anchors and piles was performed. Thermal response tests (TRT) were carried out in both types of systems. The installation process of the heat exchanger anchor is shown and results of the in-situ tests are compared in terms of their thermal parameters and performance. We demonstrate that the installation of required pipes is possible in the anchors with no mechanical interference during its installation and after anchor tensioning. The results show that the use of heat exchanger anchors is a valid alternative, with thermal performance similar to more common energy piles.
挡土墙锚杆作为地热热交换器的应用
提出了挡土墙锚杆作为热交换器的新应用,作为桩式地热交换器的替代或补充。采用锚杆和桩进行了全尺寸的原位研究。在两种类型的系统中进行了热响应测试(TRT)。介绍了换热器锚杆的安装过程,并对现场试验结果进行了热参数和性能的比较。我们证明了所需管道的安装是可能的,在其安装过程中没有机械干扰,锚张紧后。结果表明,换热器锚杆是一种有效的替代方案,其热工性能与较常见的能源桩相似。
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