摘要
在3 m×3 m×3 m的受限空间内使用双流体细水雾喷头进行了灭油池火的有效性实验,实验所用的燃料试样为柴油,雾化气体为氮气。实验中使用热电偶测量火焰温度的变化,使用烟气成分分析仪测量气体组分体积分数的变化。实验结果表明:由于雾化气体的介入,双流体细水雾的灭火过程和灭火机理与单流体细水雾有所不同;双流体细水雾在一定的压力下存在最佳的灭火水流率,在此水流率下灭火时间最短。
In order to study the mechanisms and effectiveness of pool fire extinction with twin-fluid water mist, a series of experiments were conducted in a 3 m×3 m × 3 m confined space under varying conditions. In the course of experiments, atomization media is nitrogen and fire source is a pan with diesel oil as fuel. Before and after the application of water mist, some K-type thermocouples along the pool eenterline were used to measure the flame temperature and a gas analyzer was used to measure the concentrations of O2, CO and CO2. The experimental results show that water mist and nitrogen both have effect on fire suppression process. When water mist of appropriate flow rate is applied, diesel fire can be extinguished in a short time. And at a given supply pressure, there is an optimum water flow rate.
出处
《消防科学与技术》
CAS
北大核心
2009年第1期1-4,共4页
Fire Science and Technology
关键词
双流体
细水雾
油池火
灭火时间
twin-fluid
water mist
pool fire
extinguishment time
