摘要
采用高压细水雾灭火系统,以障碍物较多的商场、超市火灾为研究对象,分析在存在障碍物遮挡的条件下火灾中产生辐射热的变化规律。相同燃烧方式下变换细水雾工作压力测量辐射热通量变化。实验结果表明:燃烧组件单侧敞开燃烧时产生的辐射热较全敞开时的辐射热强;细水雾控火效果明显,但将火焰熄灭需一定的时间;细水雾系统压力过大时雾滴直径小,容易蒸发或被吹散,难以达到燃烧物表面;细水雾系统压力太小雾滴速度不足,难以发挥作用。
The fire with barriers in super market or shopping malls was researched.The radiant heat flux with barriers under water mist was test.The radiant heat under same combustionmode and different operating pressure of water mist was tested.The results showed that： The radiant heat of comburant with barrier on one side is more than that of comburant without barrier.The fire can be controlled by water mist effectively but it takes time to be put out.The droplet of water mist is hard to get the comburant because of vaporize or being blow off since the high pressure gives small droplet diameter of it.The droplet doesn＇t have enough velocity to put out fire effectively when the operating pressure is low.
出处
《消防科学与技术》
CAS
北大核心
2011年第5期398-401,共4页
Fire Science and Technology
关键词
高压细水雾系统
货架火
实体实验
辐射热通量
high-pressure water mist
fire on goods shelf
substantive experiment
radiant heat fluxf
