Abstract：Fire smoke exhaust systems in buildings need accurate designs of the smoke exhaust start-up time. The start-up time is mainly determined by expert experience or the performance of constant exhaust systems, which are very subjective. This paper describes a recursive solution method to calculate the smoke layer height that integrates empirical models. A sensitivity analysis method is then used to study the influence of the smoke exhaust start-up time on the smoke control. Methods are given to calculate the best start-up time, the risk start-up time, and the critical invalidation start-up time. These findings can be used to improve smoke exhaust systems.
王婉娣, 张辉. 排烟启动时间对烟气控制的影响[J]. 清华大学学报（自然科学版）, 2016, 56(2): 223-228.
WANG Wandi, ZHANG Hui. Influence of smoke exhaust start-up time on smoke control. Journal of Tsinghua University(Science and Technology), 2016, 56(2): 223-228.
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2016, Vol. 56 
