COMPUTATIONAL ANALYSIS OF AN OXYGEN BASED LIQUID-FUEL SPRAY BURNER FOR UNIFORM HEAT TRANSFER
University of Leeds, Leeds, UK
Energy-2050, Faculty of Engineering, University of Sheffield, Sheffield, S10 2TN, UK
Department of Fuel and Energy, Energy and Resources Research Institute / Centre for Computational Fluid Dynamics, University of Leeds, Leeds LS2 9JT, UK
BOC Group Technical Center, N.J., USA
The high volumetric heat-release rates typically generated in oxy-fuel flames may lead to excessive local heat fluxes. Computational Fluid Dynamic techniques were used to design an oxy/liquid-fuel burner. The flames produced by the burners presented in this paper, achieve moderate uniform heat fluxes over relatively large areas. These type of characteristics are specifically favourable for industrial melting processes.
The structure of the fuel spray has been investigated experimentally to provide information for CFD modelling and to examine its effect on combustion performance. The spray quality was characterised by SMD measurements. The results are used to analyse burner performance during bench-scale tests as well as during operation in an industrial furnace.
Experimental information, such as heat flux, species profiles, and temperature profile, was obtained in a rapid-heating furnace. Comparisons with computational solutions are favourable. Results of the application of this burner in a commercial borosilicate glass furnace are presented. The favourable heat-transfer characteristics of this burner has resulted in lower fuel consumption, higher throughput, and higher product quality.