考虑火焰对绝缘强度影响的植被燃烧研究

Combustion characteristics of typical vegetation considering the effects of flame on gap insulation strength

选取3种典型植被,对其在燃烧过程中的热释放速率、火焰高度、火焰温度、火焰电阻等燃烧特征参数进行测量,并分析了这些参数相互之间的影响机制。研究表明,同尺寸的杉树木垛、茅草、秸秆及杉树枝,杉树枝火焰高度最高、平均热释放速率最大,且两参数间表现出良好的正相关性,杉树干火焰电阻最大,杉树枝最小,其值与火焰高度及热释放速率表现为明显的负相关,但同时还受火焰温度等因素综合影响。

Three kinds of combustion characteristic typical vegetation to measure their parameters such as combustion heat release rate, flame height, flame temperature, flame resistance, and to analyze the mechanism of interaction between these parameters. Researches showed,in the same size of the four kinds of fuel （ fir bole, thatch, straw, and fir branch）, Fir branch ＇ s flame was the highest,its average heat release rate was the lar gest,and the two parameters showed a good positive correlation. Resistance of Fir bole＇s flame was the largest, that of fir branch＇s was minimum,its value was significantly negative correlation to flame height and heat release rate,and also affected synthetically by the factors such as flame temperature.