The study of temperature and pressure in a cabin fire with water mist fire suppression

Li Ying, Pu Jin-yun, Ren Kai, Wu Xiang-jun
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Abstract

On the base of the heat release rate and the output of smoke in a closed cabin' fire, the water mist model is founded with the zones model and the characteristic of water mist. The relation between temperature / pressure and time is solved by energy equation, mass equation, and gas equation; At the same time, the principle that fire could be put out by water mist is brought forward. At last, the result of a example is tested same as the real fire, and the rule is attained that gas temperature and air pressure are changed by water mist, it will help people know the fire under water mist, and help people put out a fire and succor themselves.
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采用细水雾灭火的舱室火灾的温度和压力研究
根据闭式舱室火灾的放热速率和烟气输出,利用区域模型和水雾的特性,建立了闭式舱室火灾的水雾模型。用能量方程、质量方程和气体方程求解温度/压力与时间的关系;同时,提出了利用水雾灭火的原理。最后,对一个实例的结果进行了与实际火灾相一致的测试,得出了水雾对燃气温度和气压变化的规律,有助于人们认识水雾下的火灾,帮助人们灭火和自救。
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