Experimental study of radiation heat transfer coefficient of diffusion flames

Abstract

Basing on analysis of flame pictures given by visioscope by two-color method, the paper presents evolution of radiation heat transfer coefficient ${\epsilon }_s$ of soot in diffusion flames in air, in furnace and in combustion chamber of Diesel engine. ${\epsilon }_s$ reaches respectively its maximal value of 0.15; 0.30 and 0.45 in regions of maximal soot fraction of the three above flames.