建筑走廊内相邻防烟分区不同排烟方式相互影响研究
Interaction study of different smoke exhaust modes in adjacent smoke prevention zones in building corridors
摘要：
同一防火分区内相邻防烟分区采用不同排烟方式可能会对排烟造成不利影响。以某一医院走廊为例,采用FDS软件对同一防火分区采用不同排烟方式时的排烟效率进行分析。结果表明:机械排烟对自然排烟的排烟效果会产生影响;自然排烟会对机械排烟的启动时间有影响;对于本建筑排烟系统,自然排烟窗与机械排烟口正对设置情况下的整体控烟效果更好。相邻防烟分区采用不同排烟方式时,建议采用性能化方式进行优化设计。
Abstract：
Different smoke exhaust modes in adjacent smoke prevention zones within the same fire prevention zone may adversely affect smoke exhaust.Taking a hospital corridor as an example,FDS software is used to analyse the smoke exhaust efficiency of the same fire prevention zone when different smoke exhaust modes are used.The results show that mechanical smoke exhaust will have an impact on the smoke exhaust effect of the natural smoke exhaust.The natural smoke exhaust will have an impact on the start-up time of the mechanical smoke exhaust.For the smoke exhaust system of this building,the overall smoke control effect is better when the natural smoke exhaust window and the mechanical smoke exhaust vent are set opposite.When different smoke exhaust modes are used in adjacent smoke prevention zones,it is recommended to adopt a performance-based approach to optimize the design.
Keywords:fire; smoke exhaust in corridor; smoke exhaust efficiency; smoke exhaust system; smoke exhaust vent; mechanical smoke exhaust; natural smoke exhaust; smoke prevention zone