Oxy-coal combustion is one of the more promising technologies currently under development for addressing the issues associated\nwith greenhouse gas emissions from coal-fired power plants. Oxy-coal combustion involves combusting the coal fuel in mixtures\nof pure oxygen and recycled flue gas (RFG) consisting of mainly carbon dioxide (CO2). As a consequence, many researchers and\npower plant designers have turned to CFD simulations for the study and design of new oxy-coal combustion power plants, as\nwell as refitting existing air-coal combustion facilities to oxy-coal combustion operations. While CFD is a powerful tool that can\nprovide a vast amount of information, the simulations themselves can be quite expensive in terms of computational resources and\ntime investment. As a remedy, a reduced order model (ROM) for oxy-coal combustion has been developed to supplement the CFD\nsimulations. With this model, it is possible to quickly estimate the average outlet temperature of combustion flue gases given a\nknown set of mass flow rates of fuel and oxidant entering the power plant boiler as well as determine the required reactor inlet mass\nflow rates for a desired outlet temperature. Several cases have been examined with this model.The results compare quite favorably\nto full CFD simulation results.
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