受限空间内油料火灾的热释放速率分析

Analysis of heat release rate of oil fire in restricted room

为了深入研究受限空间内油料火灾的热释放速率规律,在液体和高温气体之间能量传递的基础上,利用"质量消耗率法"确定了液体可燃物燃烧时释热速率的大小。同时,对受限空间内轰燃现象通常采用的三种最大热释放速率确定方法进行了比较分析,指出了其不足之处,并采用Waterman轰燃判断方法确定了受限空间的轰燃速率,进而得到整个油料燃烧过程的热释放速率。最后,结合实例进行了比较分析,验证了提出的受限空间内液体火灾的热释放速率确定方法的正确性。

In order to deal with the heat release rate of oil fire in restricted space,the heat release rate of liquid combustible was determined by means of the combustible consumption on the basis of energy transfer between liquid and high-temperature gas.At the same time three methods,which are often used to computer heat release rate when the flashover takes place in restricted space,were analyzed and then the deficiencies were pointed out.And the flashover rate in restricted space was confirmed with Waterman′s method;the rate in whole burning was obtained.At last,the new method was proved proper by an example.