Influence of Smoke Damper Configuration on Point Extraction Ventilation System of an Urban Tunnel

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Abstract

Smoke poses a great risk to people in a tunnel fire if not controlled effectively, so how to extract smoke out of tunnel is an important issue of tunnel fire protection. In this study, numerical simulation has been carried out to study the influence of smoke damper configuration on point extraction ventilation system of an urban tunnel using FDS 5.5. Six fire scenarios have been simulated with different damper configurations, and simulation results of damper flow rate, visibility and temperature distribution in the tunnel have been analyzed to evaluate the different fire cases. It can be concluded that the damper area has little influence on the fire smoke control when it is large than 3m2, but the damper number and damper spacing have much more influence on smoke control of the point extraction ventilation system of this tunnel.

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Yuan, J. P., Fang, Z., Tang, Z., Li, Q., & Wang, J. H. (2016). Influence of Smoke Damper Configuration on Point Extraction Ventilation System of an Urban Tunnel. In Procedia Engineering (Vol. 135, pp. 99–106). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2016.01.085

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