Numerical and Experimental Study on Combustion Performance of an Infrared Radiation Burner with Porous Metal Plaque
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Compared with atmospheric burner, porous infrared radiation burner has higher thermal efficiency. In this study, an infrared radiation burner with metal plaque was studied experimentally and numerically. The experimental results show that the thermal efficiency is 60.6% without blow-off, flashback, or lifted-flame during the continuous combustion for 60 min. The simulation with suitable kinetic parameters of chemical reaction agrees well with the experimental results. Moreover, a parametric study concerned with the plaque porosity, bore diameter, and thermal load was conducted by the validated model. The results show that the flame temperature increases when the bore diameter or the thermal load increases but decreases with the enlarged porosity. The upper surface temperature increases linearly with the improved thermal load but decreases when the porosity increases, and the bore diameter has a negligible effect on it. The nitrogen oxide (NOx) emission is positively correlated to the combustion temperature.
KeywordsPorous metal plaque Combustion performance NOx emission Methane single-step reaction
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