细水雾幕抑制火灾烟气的试验研究.pdf

第 20 卷 第 3 期 燃 烧 科 学 与 技 术 Vol.20 No.3 2014 年 6 月 Journal of Combustion Science and Technology Jun. 2014 DOI 10.11715/rskxjs.R201403070 细水雾幕抑制火灾烟气的实验研究 李 媛，王喜世，蓝美娟，朱 培 (中国科学技术大学火灾科学国家重点实验室，合肥 230026) 摘 要 ：针对复杂建筑内疏散通道等部位的抑烟和防火分隔问题，通过建立细水雾幕防火抑烟模拟实验台，初步研 究了细水雾幕抑制火灾烟气的效果．结果表明，细水雾幕对火灾烟气具有很好的抑制作用，在 2.0,MPa 细水雾幕施 加的情况下可使火场烟气的光学密度降低 80% ，能见度从 1.8,m 提高到 9.5,m ；使火场温度降低 62% ；使烟气穿过细 水雾幕的时间延迟 40,s ，从而能够有效阻挡烟气，为人员安全疏散提供安全的环境条件和充足的时间． 关键词 ：细水雾幕；火灾烟气；光学烟密度；温度 中图分类号：X932 文献标志码 ：A 文章编号 ：1006-8740 (2014)03-0263-07 Fire Smoke Control by Water Mist Curtain Li Yuan ，Wang Xishi ，Lan Meijuan ，Zhu Pei (State Key Laboratory of Fire Science ，University of Science and Technology of China ，Hefei 230026 ，China) Abstract ：Aiming at fire smoke control and fire compartmentation inside complex buildings ，such as the evacuation passageway ，fire smoke controlled by water mist was studied through setting up an experimental platform containing the water mist curtain system. The results indicate that under the effect of 2.0,MPa ，water mist curtain can bring about 80% reduction of smoke density optical and 62% reduction of smoke temperature. It can promote visibility of the pro- tected area from 1.8,m to 9.5,m. Smoke passing through the curtain experimences a 40,s delay. The water mist curtain proves to effectively control fire smoke and leave enough time for evacuation. Keywords ：water mist curtain ；fire smoke ；optical density of smoke ；temperature 近年来