Energy Geotechnics - SEG-2018

Energy Geotechnics - SEG-2018
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能源岩土工程 - SEG-2018

DOI:
10.1007/978-3-319-99670-7_1
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发表时间:
2019
期刊:
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影响因子:
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通讯作者:
Woodman N
Woodman N
中科院分区:
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文献类型:
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作者:
Woodman N

文献摘要

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本文评估了不同的热堆换热器的几何形状,使用分析径向近似的功效。从灌浆钻孔内的管道中的流体到外部地面的不稳定径向热流得到了很好的证明,并且可以使用拉普拉斯变换快速解析求解(Javed和Claesson 2011)。通过比较的径向模型与有限元模拟,包括明确的桩的几何形状,本文提供了一个临时的分析,这种方法的准确性。初步研究结果表明,径向模型可以提供一个适当的近似桩行为的某些管道配置,虽然有小的“中期”的错误。
This paper appraises the efficacy of using an analytical radial approximation for different thermal pile heat exchanger geometries. Unsteady radial heat-flow from fluid in a pipe set within a grouted borehole into the external ground is well-documented and can be solved analytically very rapidly using Laplace Transforms (Javed and Claesson 2011). By comparing the radial model with finite-element simulations including explicit pile geometries, this paper provides a provisional analysis of the accuracy of this approach. Initial findings suggest that the radial model may provide an appropriate approximation to pile behaviour for certain pipe configurations, albeit with small ‘mid-time’ error.