【摘要】 室内火灾烟气-空气分界面位置的确定对研究火灾烟气的蔓延规律及其危害性具有重要意义。本文介绍一种用CO₂红外气体分析仪测定室内火灾烟气-空气分界面位置的方法.由于烟气-空气分界处的大梯度CO₂浓度分布及CO₂浓度的大波动,使得该方法与测量温度分布及光密度分布方法相比,具有明显的合理性和优越性.该方法也可用于测定各种燃烧场合的火焰封面位置等类似情况。更多还原

【Abstract】 Determining the position of smoke-air interface is rery important to investigating the spread properties and haz-ardousness of smoke in room fire. This paper describes a method for determining smoke-air interface position by CO2 infrared analyzer.Because of the great gradient of CO2 distribution and the great fluctuation of CO2 concentration in the smok-air interface this method is more reasonable compared with temperature distribution method and optical density distribution method. This method can also be used in similar cases such as the determination of frame interface position in combustion.更多还原