The development of a chemical kinetic mechanism for combustion in supercritical carbon dioxide
نویسندگان
چکیده
Direct fired supercritical CO2 (sCO2) power cycles allow for the combustion of gaseous fuels under oxyfuel conditions with inherent carbon capture. As is captured intrinsically, efficiency penalty capture on overall plant small, meaning that plants achieve a similar to traditional fossil fuel without and storage. However, at high pressures in large dilutions CO2, mechanisms are poorly understood. Therefore, this paper sensitivity quantitative analysis four established chemical kinetic have been employed determine most important reactions best performing over range different conditions. CH3O2 chemistry was identified as pivotal mechanism component modelling methane above 200 atm. The University Sheffield (UoS) sCO2 created present work better models ignition delay time (IDT) high-pressure dilution CO2. Quantitative showed UoS fit greatest number IDT datasets had lowest average absolute error value, thus indicating superior performance compared existing mechanisms, well-validated lower pressure
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ژورنال
عنوان ژورنال: Energy
سال: 2022
ISSN: ['1873-6785', '0360-5442']
DOI: https://doi.org/10.1016/j.energy.2022.124490