AN EXPERIMENTAL STUDY OF FLASHBACK PHENOMENON IN A TWO-LAYER POROUS MEDIA

The present paper concerns an experimental investigation of the flashback phenomenon of flame in a porous media burner made of two SiC-porous media. Regarding the importance of flame stabilization on the surface of these types of burners to achieve the highest efficiency, some influential parameters that affect the flame flashback, such as the firing rate and the pore density, were studied. The reactive mixture comprisednatural gas and air with an equivalence ratio of 0.65. The temperature profile along the burner was measured by thermocouples installed at different locations of the burner, including the porous media. Results show that by increasing the firing rate at a constant porosity, the flashback temperature is increased and the flashback time is reduced. An increase in the porosity results in reduction of flashback temperature and its associated time.