摘要
为探索细水雾抑制室内轰燃问题,在小规模火灾实验箱内开展了试验研究。针对不同流速(q_w)的12种火灾场景,探讨了细水雾对喷出火焰、热烟气层温度及轰燃延迟时间的影响,得到了细水雾抑制轰燃所需临界流速。在此基础上,提出了判定细水雾抑制轰燃效果的指标——轰燃抑制度(I_(F·C)),找到了I_(F·C)和q_w之间的关系,相关研究结果在大规模室内火灾试验中得到了验证。
Experiments were conducted in a small-scale firebox equipped with water mist system and data acquisition one to explore flashover control in enclosure fires by the water mist. Twelve fire scenarios under different operating flow rates（ q_w） of water mist were experimentally investigated to show the influence of water mist on the extrusive flame,hot gas layer temperature and delay time of flashover; the critical flow rate needed for restraining flashover by the water mist was determined. An indicator（ IF·C） that can be used to judge the effectiveness of flashover control by the water mist was proposed,and the critical value of IF·C needed for restraining flashover and the relationship between IF·C and qwwas obtained. The relevant results were verified in a full-scale experiment.
出处
《武警学院学报》
2017年第8期5-9,13,共6页
Journal of the Armed Police Academy
关键词
轰燃
细水雾
热烟气层温度
轰燃抑制度
室内火灾
flashover
water mist
temperature of hot gas layer
indicator of flashover control
enclosure fire
