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contributor authorHalawa, Taher
date accessioned2022-02-05T22:04:34Z
date available2022-02-05T22:04:34Z
date copyright11/6/2020 12:00:00 AM
date issued2020
identifier issn1948-5085
identifier othertsea_13_3_031025.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4276861
description abstractThe effectiveness of the smoke control strategy plays an important role in increasing safety levels when fire accidents occur in road tunnels. This paper introduces clarifications about how the efficiency of smoke extraction control using solid curtains can be increased by placing smoke extraction vents close to the solid curtains. The effect of adding a solid curtain with different heights and at various positions relative to a smoke extraction vent was studied in this paper. A 14.3% increase in the vent flowrate occurs at the time corresponding to the fire peak heat release rate when the distance between the solid curtain and the vent is equivalent to 90% of the tunnel height and when the solid curtain height is equal to 16% of the tunnel height. High temperature and low visibility conditions occur near the solid curtain at the smoke-trapped area when the smoke curtain height exceeds 40% of the tunnel height. Using a solid curtain positioned far away from the vent with a distance equals to 90% of the tunnel height and with a height in the range from 16% to 30% of the tunnel height achieves the best results in terms of suppression of smoke spread and attaining acceptable visibility and temperature levels at the region where the smoke is trapped by the solid curtain.
publisherThe American Society of Mechanical Engineers (ASME)
titleOn the Use of Solid Curtains Near Smoke Extraction Vents to Control Smoke Spread Resulting From Fire in Road Tunnels
typeJournal Paper
journal volume13
journal issue3
journal titleJournal of Thermal Science and Engineering Applications
identifier doi10.1115/1.4048670
journal fristpage031025-1
journal lastpage031025-13
page13
treeJournal of Thermal Science and Engineering Applications:;2020:;volume( 013 ):;issue: 003
contenttypeFulltext


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