室内火灾中非连续介质着火时间研究

发布时间：2018-06-05 13:52

本文选题：室内火灾 + 非连续介质　；参考：《科学技术与工程》2016年35期

【摘要】：室内发生火灾时,和火源间隔一定距离的可燃物即非连续介质突然发生着火燃烧的现象较为普遍,且具有较强的危害性。从非连续介质着火的原因入手,通过将着火条件进行量化,提出了非连续介质着火时间的确定方法,即:非连续介质着火时间为烟气层和处于着火浓度下限的可燃挥发份接触所需要时间与烟气层温度达到非连续介质自燃点所需要时间的最大者,并通过实验验证了该预测方法和相关计算关系式的有效性,对火灾预防和火灾风险评估具有重要的指导作用。
[Abstract]:When there is a fire in the room, the combustion of combustible matter, that is, discontinuous medium, which is a certain distance between the fire source and the fire source, is common and harmful. Starting with the cause of discontinuous medium ignition, a method for determining the ignition time of discontinuous medium is proposed by quantifying the ignition condition. That is, the ignition time of the discontinuous medium is the longest time required for the contact of the flue gas layer and the flammable volatile matter at the lower limit of the ignition concentration and the time required for the flue gas layer temperature to reach the self-ignition point of the discontinuous medium. The validity of the prediction method and the correlation formula is verified by experiments, which plays an important role in fire prevention and fire risk assessment.
【作者单位】：驻马店市消防支队;
【分类号】：X932

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