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《Journal of Combustion Science and Technology》 2016-01
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Radiation Characteristics of Oxy-Fuel Combustion Flue Gas

Liu Ruochen;An Enke;Liu Zeqing;Yuan Yichao;School of Mechanical and Energy Engineering,Tongji University;Key Laboratory of Multiphase and Heat Transfer in Shanghai Power Engineering,University of Shanghai for Science and Technology;  
In terms of air-fired,30%,O2/70%,CO2 and 50%,O2/50%,CO2 combustion,a simplified wide band correlated-k distribution model was applied to analyze the radiation characteristics of H2O/CO2 gas,and the radiation characteristic parameters of solid particles were also calculated using Mie electromagnetic theory and former Soviet standard.The results show that both the Planck average absorption coefficient and emissivity of H2O/CO2 decreases with the increase of temperature,and H2 O plays a more important role in radiation heat transfer;the 2,600—4,400,cm-1band contributes most to the total emissivity of H2O/CO2.The total emissivity of flue gas under 50%,O2/50%,CO2 combustion is 30% higher than that under air-fired combustion.The radiation capacity of coke,ash and three-atom gases accounts for 10%—20%,,50%—60%, and 20%—30%,respectively,indicating that the radiation capacity of solid particles is much stronger than that of three-atom gases.
【Fund】: 上海市重点实验室建设资助项目(13DZ2260900)
【CateGory Index】: TQ534
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【Co-citations】
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1 YIN Xue-mei, LIU Lin-hua, LI Bing-xi (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang Province, China);A Wide Band k-Distribution Model for the Radiative Property of Water Vapor and Carbon Dioxide Gas Mixture[J];Proceedings of the CSEE;2008-05
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