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燃烧火焰辐射率对于光学法测量火焰温度具有重要意义。利用消光法测量气体发光火焰中炭粒子的平均体积浓度 ,结合炭粒子在可见光及近红外区域 (5 14.6～ 10 6 3.3nm)的折射率 ,得到火焰辐射的单色辐射率随波长的变化规律。对不同浓度的丁烷气体火焰测量结果表明 ,采用此方法所获得的火焰辐射率和在此基础上得到的火焰温度与已有的研究结果较为吻合。
Combustion flame emissivity for the optical method of measuring flame temperature is of great significance. Using the extinction method to measure the average volume concentration of carbon particles in the glow flames and the refractive index of carbon particles in the visible and near infrared region (5 14.6 ~ 10 6 3.3nm), the monochromatic emissivity of the flame radiation with wavelength was obtained. . The measurement results of butane gas flames with different concentrations show that the flame emissivity obtained by this method and the flame temperature obtained on this basis are in good agreement with the existing research results.