Tests of Radiation From Luminous Flames

Abstract

Abstract This paper discusses the radiating power of luminous flames produced in the burning of natural gas and the effects which the different conditions of injection and combustion of the gas have upon such radiating power. The authors described the equipment used in making the tests which included a standard-type glass-tank burner and a newly developed burner designated as a “cracking and mixing” burner. The series of tests conducted with these burners were made to determine the effect on flame radiation of the following factors: Excess air or gas; changing the temperature of the preheated air; preheating the gas; changing the velocity of the gas; varying the proportion of gas passed through the high-pressure and low-pressure nozzles of the cracking and mixing burners; addition of gasoline to the gas; changing the angle of the burners; changing the velocity of the preheated air; closing or changing the size of the air hole around the burners; inserting or removing a tongue from the port; and changing the furnace pressure. Curves are presented by the authors showing these various effects.