细水雾幕抑制火灾烟气的实验研究  

Fire Smoke Control by Water Mist Curtain

作　　者：李媛[1] 王喜世[1] 蓝美娟[1] 朱培[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《燃烧科学与技术》2014年第3期263-269,共7页Journal of Combustion Science and Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2012CB719704);国家自然科学基金资助项目标(51323010)

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.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 protected 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.

关 键 词：细水雾幕 火灾烟气 光学烟密度 温度 

分 类 号：X932[环境科学与工程—安全科学]