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fire extinguishing efficiency
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The water aerosol Fire extinguishing Agent is a new type of Halon replacement. Because its combustion rate has an important effect on the fire extinguishing efficiency, this paper mainly discusses the means of improving the combustion rate on the basis of theoretical analysis. The means of improving combustion rate that is taken in this paper is adding metal powder to improve thermal conductivity, adding catalyst to decrease activation energy, using duct in reactor to remove...

The water aerosol Fire extinguishing Agent is a new type of Halon replacement. Because its combustion rate has an important effect on the fire extinguishing efficiency, this paper mainly discusses the means of improving the combustion rate on the basis of theoretical analysis. The means of improving combustion rate that is taken in this paper is adding metal powder to improve thermal conductivity, adding catalyst to decrease activation energy, using duct in reactor to remove liquid substance and strengthen heat feedback.

水基热气溶胶灭火剂是以替代哈龙为目的而研制的新一代气溶胶灭火剂 ;因为其燃烧速度对灭火效率有重大影响 ,故本文在理论分析的基础上 ,采用加入金属粉提高导热系数 ,增加反应放热量 ;加入正催化剂降低反应活化能 ;在反应器中采用导流管除去燃烧表面的液态产物 ,加强燃烧反应的热反馈等方式提高灭火剂燃速

The present paper aims to introduce the author's contrast experiment with two kinds of fire extinguishing agents,the traditional agent-water and the gel extinguisher. As is known, water is traditionally the most frequently used fire extinguisher. However, it has its own particular deficiency. Based on the study and analysis of the fire extinguishing properties of water, the author has done a series of contrast experiments with water and its counterpart-gel extinguisher, which is...

The present paper aims to introduce the author's contrast experiment with two kinds of fire extinguishing agents,the traditional agent-water and the gel extinguisher. As is known, water is traditionally the most frequently used fire extinguisher. However, it has its own particular deficiency. Based on the study and analysis of the fire extinguishing properties of water, the author has done a series of contrast experiments with water and its counterpart-gel extinguisher, which is able to improve the extinguishing behaviors of water by increasing the security of water in fire stamping. It can also helps to enhance the fire-extinguishing efficiency by adding some fire-resisting additives. The scale of wood stack used as fire resource in the author's experiments, the flux of gel and water are theoretically devised in accordance with the principle of energy conservation. The experimental device used for confecting gel extinguisher in a properly blending proportion of water and additives has been designed and manufactured by the author himself. The contrasting properties of gel extinguisher and water are compared, analyzed and carefully studied, including testing the mobility, resisting combustibility and fire-extinguishing features by using the author's own made experimental extinguishing device. The results of his experiments show that gel extinguisher enjoys better mobility in a certain concentration scope and doesn't increase the mobile resistance of gel inside the pipe. In the experimental concentration scope, the flowing resistance coefficient of gel extinguisher proves less than that of water as a result of the water's cooling area extension, which is critical for fire fighting. Since the cooling time of water is prolonged, gel extinguisher has obviously improved the burning resistance in comparison with water, which can effectively restrain the temperature rising of the burning objects and slower the spreading velocity of fire. Thus, it can be concluded that the fire-extinguishing effect of gel extinguisher is superior to water. In case of the smaller experimental flux, gel extinguisher enjoys remarkable advantage in controlling the growth and spread of fire over water. When the experiment flux is larger, gel extinguisher can help to extinguish fire faster than water and the extinguishing time can be made half reduced. In addition, the fire-extinguishing superiority of gel extinguisher is particularly suitable for controlling and putting out self-ignition fire in coal mines.

分析了用水灭火时存在的明显不足 ,引入了可改善水灭火性能、提高水灭火安全性和灭火效率的胶体灭火剂 ,对作为实验用火源的木垛尺寸、水和胶体的实验流量进行了理论分析和设计。设计和制造了可实现定量配比胶体灭火剂的试验装置 ,利用自行设计的灭火实验装置 ,研究了胶体灭火剂和水对比的流动性能、抗燃性能和灭火性能。实验结果显示 ,胶体灭火剂在一定浓度范围内具有较好的流动性 ,不会提高胶体在管路中的流动阻力 ;与水相比 ,胶体灭火剂具有优异的抗燃和灭火效果。

A perfect and reliable automatic fire-extinguishing sprinkler system is the key process that would ensure its fire-extinguishing efficiency.In this paper,some viewpoints is proposed which are focused on the design of control valve,fire-fight pond,water stream indicator and the setting of sprinkler in the design of automatic fire-extinguishing sprinkler system.

完善可靠的自动喷水灭火系统是保证自动喷水灭火系统灭火效率的核心问题。本文就自动喷水灭火系统设计中的控制阀、消防水池、水流指示器等设置及喷头的布置问题提出个人看法。

 
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