Studies of Twin-Flame Matrix Burner

Abstract

Experimental studies were conducted on the flame stability and combustion characteristics of the twin-flame matrix burner which is composed of a number of counterflow burners arranged in a regular matrix. The burner consists of two opposing burner matrices which form the combustion chamber with two side plates and a bottom plate. The stability limits of the matrix flames, the profiles of temperature and the concentrations of some stable species were measured for methane flames at atmospheric pressure. Although the characteristics of the flames vary gradually toward the exit of the combustion chamber, the counterflow twin flames are established within a wide range of ejection velocity and equivalence ratio of the mixture. It is found that the turn-down ratio of this burner reaches 11, which is 3∼4 times larger than that of usual domestic appliances.