High-intensity combustion of the Bunsen burner.

The high-intensity combustion of the Bunsen burner was examined for the purpose of the compaction of domestic water heaters. The experiments with a burner port model clarified the relations between the specifications of various burner ports, flame retention mechanisms, flame holder, arrangement of burner port slits, and combustion characteristics. Furthermore, it was found that the acceleration of the secondary air diffusion by installing diffusion plates between the burners downstream of the burner ports shortened the flame length. Consequently, the calorific capacity of the combustion chamber increased to 2×104 kW/m3 which is equivalent to three to four times that of the conventional burners, and redued the combustion noise.