Accuracy improvement of determining temperature and concentrations of gases by the approximation polynomials method on the example of high-temperature CO2

O. K. Voitsekhovskaya; O. V. Egorov; D. E. Kashirskii; N. M. Emelyanov

doi:10.1117/12.2288153

30 November 2017 Accuracy improvement of determining temperature and concentrations of gases by the approximation polynomials method on the example of high-temperature CO₂

O. K. Voitsekhovskaya, O. V. Egorov, D. E. Kashirskii, N. M. Emelyanov

Author Affiliations +

Proceedings Volume 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 1046643 (2017) https://doi.org/10.1117/12.2288153
Event: XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2017, Irkutsk, Russian Federation

Abstract

The method of approximation polynomials for simultaneous determination of the temperature and concentration of a heated gas from its spectral characteristics is considered. The accuracy of finding the experimental values of the thermodynamic parameters was increased by using an arbitrary number (≥ 2) of spectral centers and taking into account the measurement error of the transmission function. Approbation of the improved technique was carried out using the most accurate measurements of the transmission function of carbon dioxide in the temperature range 500-1770 K and the partial pressure ρ_CO2 = 0.17-1 atm.

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O. K. Voitsekhovskaya, O. V. Egorov, D. E. Kashirskii, and N. M. Emelyanov "Accuracy improvement of determining temperature and concentrations of gases by the approximation polynomials method on the example of high-temperature CO₂", Proc. SPIE 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1046643 (30 November 2017); https://doi.org/10.1117/12.2288153

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