室内步行街三级排烟效果试验研究

发布时间：2018-02-25 06:27

本文关键词： 室内步行街三级排烟模式热烟试验排烟效果　出处：《消防科学与技术》2017年09期 　论文类型：期刊论文

【摘要】：为研究三级排烟模式且顶部设有自然排烟窗的室内商业步行街火灾烟气蔓延特性,在步行街首层环廊位置进行热态发烟试验。结果表明:相比于两级排烟,三级排烟模式下环廊排烟可有效阻止烟气蔓延至步行街高大空间;一旦发生小规模火灾或产生低热量烟气时,步行街顶部采用机械排烟方式比自然排烟方式具有明显的排烟效果,但排烟风机的延迟开启易造成烟气蔓延范围扩大。为了营造安全的疏散条件,避免烟气从环廊蔓延至步行街,应增大环廊排烟设备的能力。
[Abstract]:In order to study the fire smoke spread characteristics of commercial pedestrian street with natural exhaust window at the top of the three-stage smoke exhaust model, a hot smoke emission test was carried out at the first floor of pedestrian street. The results show that compared with the two-stage exhaust smoke, Under the three-stage smoke exhaust mode, the annular exhaust can effectively prevent the smoke from spreading to the tall space of the pedestrian street; once there is a small-scale fire or low-calorie smoke, The mechanical smoke exhaust at the top of the pedestrian street is more effective than that of the natural one, but the delayed opening of the exhaust fan will result in the expansion of the spread range of the smoke. In order to create a safe evacuation condition, Avoid the spread of smoke from the ring corridor to the pedestrian street, should increase the capacity of the ring corridor exhaust equipment.
【作者单位】：厦门市消防支队;福建省消防总队;
【分类号】：TU834

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