Simple approximation of total emissivity of CO2-H2O mixture used in the zonal method of calculation of heat transfer by radiation

Abstract

The paper presents a new simple-to-use expression to calculate the total emissivity of a mixture of gases CO2 and H2O used for modeling heat transfer by radiation in industrial furnaces. The accuracy of this expression is evaluated using the exponential wide band model. It is found that the time taken to calculate the total emissivity in this expression is 1.5 times less than in other approximation methods.

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Correspondence to A. A. Titaev.

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Lisienko, V.G., Malikov, G.K. & Titaev, A.A. Simple approximation of total emissivity of CO2-H2O mixture used in the zonal method of calculation of heat transfer by radiation. Thermophys. Aeromech. 21, 779–782 (2014). https://doi.org/10.1134/S086986431406016X

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Keywords

  • heat transfer by radiation
  • mathematical modeling
  • zonal method
  • approximation of the total emissivity