Determination of a flame temperature from the analysis of a combustion flame radiation spectrum through the use of an optimized algorithm

A flame temperature can be determined from an analysis of the radiation spectrum emitted by a gas-burning flame in conjunction with the use of an optimized algorithm. This approach simplifies the calibration of the absolute radiation intensity of a flame as demanded by the conventional two-color method. Meanwhile, it is conducive to a better understanding of the variation relationship of the flame radiation emissivity versus wavelength. The measured temperature values are in good agreement with those obtained by a thermocouple, demonstrating the fairly high precision of the method. Moreover, this also makes it possible to conduct the on-line monitoring of a combustion flame temperature.