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http://dx.doi.org/10.9711/KTAJ.2011.13.6.451

A study on the effective fire and smoke control in transverse oversized exhaust ventilation  

Han, Sang-Pil (한국소방안전협회)
Jeon, Yong-Han (상지영서대학교 소방안전과)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.13, no.6, 2011 , pp. 451-462 More about this Journal
Abstract
The smoke control system plays the most important role in securing evacuation environment when a fire occurs in road tunnels. Smoke control methods in road tunnels are classified into two categories which are longitudinal ventilation system and transverse ventilation system. In this study it is intended to review the characteristics of smoke behavior by performing numerical analysis for calculating the optimal smoke exhaust air volume with scaled-model and simulation when a fire occurs in tunnels in which transverse ventilation is applied, and for obtaining the basic data required for the design of smoke exhaust systems by deriving optimal smoke exhaust operational conditions for various conditions. As a result of this study, when the critical velocity in the tunnel is 1.75 m/s and 2.5 m/s, the optimal smoke exhaust air volume has to be more than $173m^3/s$, $236m^3/s$ for the distance of the smoke moving which can limit the distance to 250 m. In addition, in case of uniform exhaust the generated smoke is effectively taken away if the two exhaust holes near the fire region are opened at the same time.
Keywords
Transverse ventilation; longitudinal ventilation; oversized exhaust; exhaust air volume;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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