Advanced monitoring and characterisation of combustion flames

This paper describes the advanced monitoring and characterisation of a gaseous flame in a 10 MW_th utility boiler using a recently developed instrumentation system. The physical properties of the flame are characterised in terms of a set of geometrical and luminous parameters, which are derived from the digital images of the flame. Results obtained have demonstrated that the system is capable of characterising the flame both qualitatively and quantitatively. The results have also revealed that the geometrical and luminous parameters have close relationships with the air/fuel flow rates and emissions of the boiler