Simple Expression for the Emittance of H sub(2)O-CO sub(2) Mixtures in Zonal Methods of Radiation Transfer Modeling

A new and simple expression for the calculation of the total gas emittance of H sub(2)O-CO sub(2) mixtures for modeling radiation transfer in combustion furnaces is presented. Its accuracy is established by comparing the predictions with those based on the well established the model based on Hitemp database. The computational time was found to be reduced by a factor of 3 in comparison to other methods for computing the total emittance of combustion gas mixtures.