کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1742399 | 1521917 | 2014 | 8 صفحه PDF | دانلود رایگان |
• It is shown that anchors can sustainably be used as heat exchangers with the ground.
• Several in situ conditions and service operations were tested.
• Optimisation process was elaborated and achieved on the case study.
• Extractible heat ranges from 0.4 to 0.8 MWh per year and per metre of tunnel for the structure investigated.
This study addresses the geothermal potential of using the anchors of a cut-and-cover tunnel as heat exchangers with the ground for seasonal heat storage. The influence of the soil properties and water table level were investigated. Various service conditions were examined, optimised and compared using finite-element analyses. The extractable heat from the ground through the anchors, per year and per kilometre of tunnel, ranges from 0.4 to 0.8 GWh. The seasonal heat storage is shown to be an important factor for the efficiency and sustainability of the heat source.
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Journal: Geothermics - Volume 51, July 2014, Pages 380–387