Experimental studies of flame extinction by sodium bicarbonate (NaHCO3) powder

被引：27

作者：

Trees, D

Seshadri, K

机构：

[1] Ctr. for Ener. and Combust. Research, Dept. Appl. Mechanics and Eng. Sci., Univ. of California at San Diego, San Diego

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 1997年 / 122卷 / 1-6期

关键词：

inhibition; diffusion; laminar;

D O I：

10.1080/00102209708935610

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An experimental study is conducted to evaluate the effectiveness of sodium bicarbonate (NaHCO3) powder in extinguishing flames burning hydrocarbon fuels. Experiments are performed formed on flames stabilized in a counterflow burner. Powders with various particle sizes are used. The minimum amount of NaHCO3 powder required to extinguish these flames is measured and compared with previous measurements using CF3Br and N-2. The results show NaHCO3 to be much more effective than CF3Br and N-2 in extinguishing the flames. The calculated equilibrium temperatures of NaHCO3 inhibited flames close to extinction show that NaHCO3 inhibits the flame by chemical mechanisms.

引用

页码：215 / 230

页数：16

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