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Abstract
This paper deals with a comparative-experimental study of the flame structure of the air-blast atomized sprays of number 2 fuel oil (petroleum derived) and SRC-II fuel oil (coal derived). The effects of fuel flow rate, atomizing air flow rate, and swirling air flow rate on the following flame characteristics have been studied: flame appearance and length, axial and radial profiles of temperature, concentration of major species CO 2, H 2O, O 2, and CO, concentration of oxides of nitrogen and particulates, and radiant power emission. The results indicate that gross flame properties and the effects of operating variables on them in SRC-II and number 2 fuel oil flames are qualitatively similar. The magnitudes of flame radiation, particulate concentration, and nitrogen oxide concentrations are higher and peak temperatures are lower in SRC-II oil flame than in number 2 oil flame.
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