earticle

영어

This article describes an investigation of basic combustion characteristics of radiant burner with various firing rate and equivalence ratios in porous metal. The objective of this study is to investigate the radiation efficiency, exhaust emission and preheating effect of unburned mixture in porous surface burner. As a main experimental condition, firing rates and equivalence ratios each were adjusted from 204 to 408 W/m2 and 0.4 to 1.3. Experiment results show that the flame of Porous surface burner could be divided into three modes depending on the different flame shapes. First, it was appeared low NOx and CO emission as well as low surface temperature in blue flame mode. Second, in radiation mode, surface temperature and radiation efficiency were measured highly. Finally in pool flame mode, burner surface temperature and the preheating effect of unburned mixture were decreased again.