1887

Abstract

Summary

Utilization of the rock massif by tunnels or utility corridors as a heat source or heat storage leads to energy savings. This work presents an evaluation of a heat exchanger enhancement with a thermally conductive matter (TCM) in tunnel lining. The heat exchanger with TCM is meant to be placed between the primary and secondary lining. The evaluation is based on a finite element simulations. Also the influence of the heat exchanger tube spacing was investigated. The extractable heat from the rock massif ranges from 10 to 90 W per meter. The heat exchanger conductivity enhancement resulted into 4 to 30 % benefit.

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/content/papers/10.3997/2214-4609.201414278
2015-10-13
2024-04-19
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References

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