Zhang, Q;
Shan, S;
Zhou, Z;
Luo, KH;
(2023)
A new WSGG radiation model of CO/CO₂ mixed gas for solar-driven coal/biomass fuel gasification.
Fuel
, 346
, Article 128241. 10.1016/j.fuel.2023.128241.
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Luo 2023 Fuel WGSS accepted.pdf - Accepted Version Download (2MB) | Preview |
Abstract
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.
| Type: | Article |
|---|---|
| Title: | A new WSGG radiation model of CO/CO₂ mixed gas for solar-driven coal/biomass fuel gasification |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.fuel.2023.128241 |
| Publisher version: | https://doi.org/10.1016/j.fuel.2023.128241 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Solar, Gasification, Radiation, CO, WSGG model |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10174009 |
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