Overlap corrections for emissivity calculations of H2O–CO2–CO–N2 mixtures

Abstract

Calculations of total gas emissivities of gas mixtures containing several radiatively active species require corrections for band overlapping. In this paper, we generate such overlap correction charts for H2O–CO2–N2, H2O–CO–N2, and CO2–CO–N2 mixtures. These charts are applicable in the 0.1–40 bar total pressure range and in the 500 K–2500 K temperature range. For H2O–CO2–N2 mixtures, differences between our charts and Hottel’s graphs as well as models of Leckner and Modak are highlighted and analyzed.