摘要
燃料燃烧时,火焰内部的非完全燃烧会使生成的烟气中存在带电粒子,旋转火焰在直流电场作用下内部和顶部的温度会明显升高,一般升高25℃,而在旋转火焰的边缘处,火焰的温度变化较小,一般只有5℃.这主要与火焰内部的燃烧温度特性和旋转特性有关.同时,在不同性质的电场作用下,其温度的变化幅度也不相同,在直流电的作用下,其温度的最大变化范围可以达到30℃,而在100 Hz交流电作用下温度的最大变化范围还不到5℃.
Incomplete combustion inside a fire whirl will produce many ions in the smoke. The temperature inside and at the top of a fire whirl both increases when an electrical field acts on it, and the change of the temperature is about 25℃, but the change of temperature at the fringe of a fire whirl is very small, only about 5℃. It is mainly due to its combustion and swirling characteristics. And the temperature changes are also related to the property of electrical field, the temperature changes under a direct current is near 30℃, but it is only about 5℃ under an alternating current of 100 Hz.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2007年第2期126-130,共5页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50576094)
关键词
电场
直流
交流
旋转火焰
温度
electrical field
direct current
alternating current
fire whirl
temperature
