TY - JOUR UR - https://doi.org/10.1016/j.fuel.2023.128241 KW - Solar KW - Gasification KW - Radiation KW - CO KW - WSGG model TI - A new WSGG radiation model of CO/CO? mixed gas for solar-driven coal/biomass fuel gasification N2 - Gasification driven by solar energy with CO2 is an ideal way of low-carbon resource utilization. However, there is a lack of research on the radiation heat transfer process which is important in gasification simulation. In this study, we developed a new the weighted-sum-of-gray-gases (WSGG) model to calculate the radiation heat transfer properties of CO and CO2 mixtures in solar-driven coal/biomass fuel gasification. Benchmarked against the statistical narrow-band model (SNB) of the EM2C laboratory, the WSGG model is suitable for the temperature range of 400?2500 K and the path length range of 0.001?60 m. This study also explored the effect of the CO/CO2 molar ratio on the overall emissivity of the mixture. Furthermore, the model introduces a pressure term into the emissivity calculation process and broadens the pressure range (1 bar, 5 bar, 45 bar). For the first time, the WSGG model is applied to the case where the H/C element ratio is 0, and the fluctuating temperature distribution case (1000 ? 2000 K) is analyzed, which is suitable for coal/biomass fuel gasification. In addition, this study calculated the one-dimensional radiation transfer equation. The results show that the average radiation source term difference between the new WSGG and the benchmark SNB model is within 5 % in common solar gasification engineering conditions (5 bar, 5 m). Meanwhile, this study also clarified the effect of pressure on the radiation heat transfer with different temperatures. PB - ELSEVIER SCI LTD VL - 346 A1 - Zhang, Q A1 - Shan, S A1 - Zhou, Z A1 - Luo, KH Y1 - 2023/08/15/ ID - discovery10174009 SN - 0016-2361 N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. JF - Fuel EP - 15 AV - public ER -