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An Experimental Study on Effect of Temperature and Oxygen fraction of Intake Air on Fuel Consumption in Radiant Tube Burner  

Kim Hyun-woo (Sunchon National University)
Lee Kyung-Hwan (Sunchon National University)
Roh Dong-Soon (Korea Institute of Energy Research)
Publication Information
Journal of Energy Engineering / v.14, no.2, 2005 , pp. 73-81 More about this Journal
Abstract
An Experimental study was conducted to investigate the effective way for fuel consumption improvement in radiant tube burner heating system used in steel manufacturing process. To find effectiveness of increase of temperature and oxygen fraction of intake air on fuel consumption, the model radiant tube burner heating system with recuperator was designed to be able to adjust temperature and oxygen fraction of intake air, and was operated under various conditions with oxygen concentration in exhaust gas changed. The results show that burner chamber temperature was increased about $10\%$ of intake air temperature increase. so it was difficult to expect fuel consumption improvement. But only 1 or $2\%$ increase of oxygen fraction in intake air made a significant improvement in fuel consumption even though it made much NOx emissions also. Therefore, if NOx emissions is controlled under regulation with burner modification, it is expected that increase of oxygen fraction in Intake air is effective way to improve fuel consumption.
Keywords
Radiant tube burner; Oxygen fraction; Fuel consumption; NOx;
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