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

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.