Validation of spectral gas radiation models under oxyfuel conditions - Part C: Validation of simplified models

► Benchmark comparison of total emissivity calculations of simplified spectral gas radiation models with new detailed line-by-line model HITEMP2010. ► The models were compared at path length from 0.001 m to 100 m and at temperatures from 800 °C to 1800 °C for atmospheres of pure gases and of various combustion processes. ► The statistical narrow band model EM2C had the least deviations of up to 12%. ► The weighted sum of grey gases model from Johansson (2011) was the most valid and versatile model for computational efficient simulations with an accuracy of 21%.