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采用网络模型软件模拟预测建筑火灾烟气流运动特性,以火灾建筑内的人员作为被保护对象,提出网络模型条件下火灾烟气危险状态判据,从而确定人员可用安全疏散时间ASET。人员所需安全疏散时间RSET采用经验数据计算。比较ASET和RSET,从而确定走廊排烟量。利用实例进行了验证,计算结果表明,其他条件相同时,不同火源条件下的排烟量是不同的,在火源强度较大(250kW/m2)时,72m3/(m2.h)的排烟量为该条件下的最佳排烟量。
Using network model software to simulate the movement characteristics of smoke flow in building fires and using the fire buildings as the object to be protected, the criterion of danger status of fire smoke under network model was proposed to determine the safe evacuation time ASET. Safety evacuation time required for personnel RSET is calculated using empirical data. Compare ASET and RSET to determine corridor exhaust volume. The results show that when the other conditions are the same, the amount of smoke emission is different under different fire source conditions. When the intensity of fire source is large (250kW / m2), the row of 72m3 / (m2.h) The amount of smoke is the best amount of smoke under this condition.