论文部分内容阅读
试图通过试验，研究从林火点火源的红外辐射谱特性确定火焰性质的方法。为此，研制了模拟试验台，可以同时测定各特征火焰区的红外辐射谱和平均温度。用普朗克定律和维恩位移定律对试验数据进行了处理。对三种典型的引火源（烟头、树枝和纸）进行研究的结果表明：引火源的辐射特征波长在１．１－２．１ｕｍ，３．８－４．０ｕｍ，７．８－８．２ｕｍ波段内分布，此波长与各火焰区的特征温度存在对应关系。辐射温度随波长变化。在短波长处较低，此结果与将火焰辐射处理成黑体辐射时的普朗克定律大致相符
Attempts to test the method of determining the flame properties from the infrared radiation spectrum characteristics of a forest fire source are studied. To this end, a simulation test bed was developed, which can simultaneously measure the infrared radiation spectrum and the average temperature of each characteristic flame zone. The experimental data were processed using Planck’s law and Wien’s displacement law. The results of three typical ignition sources (cigarette butts, twigs and paper) showed that the radiation characteristics of the ignition sources were in the range of 1.1-2.1um, 3.8-4.0um and 7.8-8.2um Band distribution, this wavelength and the flame zone of the corresponding characteristic temperature. Radiation temperature varies with wavelength. Lower at short wavelengths, a result roughly consistent with Planck’s law when treating flame radiation to black body radiation