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Some factors were analyzed that thermal emissivity of gray-body were brought change in this paper such as wavelength and temperature and absorbing spectrum and emissive spectrum and the surface characteristic in flame. Based on the thermal radiation theory of gray-body, the emissivity function theoretic model of the burning object was presented. Different approximation schemes were adopted according to the property of combustion production, the
equation was set up in combustion field. The influence of the measuring temperature accuracy to the emissivity precision
was developed in flame. The results shows the object in flame can be divided into three kinds of gray body, the
correlative emissivity variable need adopt different approximation technique, a method for temperature and emissivity
measurement by multi-wavelength can improve efficient the measuring precision.
Shouzhi Xia,Yan Guo,Xinwang Zhu, andQiqi Yao
"Measuring accuracy of temperature dependence on thermal emissivity in flame", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713323 (12 January 2009); https://doi.org/10.1117/12.808730
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Shouzhi Xia, Yan Guo, Xinwang Zhu, Qiqi Yao, "Measuring accuracy of temperature dependence on thermal emissivity in flame," Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713323 (12 January 2009); https://doi.org/10.1117/12.808730