A Reduced Order Model for the Design of Oxy-Coal Combustion Systems. (28th October 2015)

• Record Type: Journal Article
• Authors: Rowan, Steven L.; Celik, Ismail B.; Gutierrez, Albio D.; Escobar Vargas, Jose
• Other Names: Chakravarthy Satyanarayanan R. Academic Editor.
• Is Part Of: Journal of combustion. Volume 2015(2015)
• Publication Date: 2015-10-28
• Subjects: Combustion -- Periodicals; 541.36105
• DOI: 10.1155/2015/943568
• Languages: English
• ISSNs: 2090-1968

Abstract

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