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Journal Articles Journal of Physics: Conference Series Year : 2016

A thermal study of power cables cooling in tunnels

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Abstract

Power transmission through power cables installed in ventilated tunnels has been increasingly used worldwide and offers a complex thermal environment. Established correlations currently in use have been deduced from a non-fully developed turbulent flow. This paper details the experimental investigation of the heat transfer from a single cable in a fully developed turbulent air flow, with emphasis on the effect of the cable spacing from the tunnel wall. Nusselt numbers have been compared for different spacing and velocities. The overall heat transfer is found to be meaningfully lower than in previous studies and no threshold spacing value for the average heat transfer to decrease is clearly found. Thermal radiation is found to greatly impact the cable cooling profile.
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Origin : Publication funded by an institution
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Dates and versions

hal-03461702 , version 1 (21-04-2022)

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Attribution - CC BY 4.0

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Fahd Boukrouche, Christophe Moreau, Souad Harmand, François Beaubert, Julien Pellé, et al.. A thermal study of power cables cooling in tunnels. Journal of Physics: Conference Series, 2016, 7th European Thermal-Sciences Conference (Eurotherm2016) 19–23 June 2016, Krakow, Poland, 745 (3), pp.032032. ⟨10.1088/1742-6596/745/3/032032⟩. ⟨hal-03461702⟩
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