Abstract
Two design factors and one operation parameter of a methane fired crucible furnace are numerically explored in this work. These are the number of burners, the location of the exhaust gas exit, and the air-fuel ratio, respectively. Three dimensional steady state Computational Fluid Dynamics simulations are carried out in order to analyze the influence of the above factors on the mean cavity temperature in absence of thermal load, the methane content and the oxygen content of the exit gas.
Highlights
Crucible furnaces are frequently used at foundry industry to melt charges of ferrous and nonferrous metals
[4] reported the design of fume extraction hoods for smelting vessels using a combination of engineering and Computational Fluid Dynamics (CFD) modeling
Two design and one operation factors of a methane fired crucible furnace are numerically explored: the location of the exhaust gas exit, the number of burners, and the air-fuel ratio. 3D steady state CFD simulations were carried out in order to analyze the influence of the above factors on the mean cavity temperature, and the methane and oxygen contents in the exit gas
Summary
Crucible furnaces are frequently used at foundry industry to melt charges of ferrous and nonferrous metals. The charge is placed inside a refractory crucible and is heated and melted by thermal conduction through the crucible walls [1]. The crucible walls are heated by fuel (gas, oil, coke) or electricity (resistive heating). Four major problems in fuel heated furnaces arise: non-uniform flame distribution, oxidation of metal, scale formation and emission of pollutants [2]. Computers and software are employed to analyze, optimize and design fuel fired furnaces [3]. [4] reported the design of fume extraction hoods for smelting vessels using a combination of engineering and Computational Fluid Dynamics (CFD) modeling.
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