Numerical and experimental investigations into combustion of a single biomass particle

The combustion process has been also experimentally investigated in an electrically heated up reactor through which the flow of hot gases up to temperature of 1223 K is possible. Heating up, devolatilization, ignition and combustion of volatiles in a laminar diffusion flame around the particle and biomass char combustion are phenomena which occurred and have been recorded by a high speed camera during the whole combustion process. The particle temperature has been measured by a thermocouple on which the particle was placed. Experimental investigations of combustion have been performed for the single willow particle having the diameter around 1 mm burning in air at temperature of 923 K. Numerical results have been compared with the experimental ones. The numerical results, ie the particle temperature, gas species concentrations and other, correctly reflect the whole combustion process experimentally observed.