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Combustion, Explosion and Shock Waves

2014 year, number 5

COMBUSTION OF A SUSPENSION OF BIOFUEL DROPLETS IN AIR

D. C. Darakov1, A. N. Zolotko2, A. K. Kopeika1, P. O. Pavlyuk1
1Mechnikov Odessa National University, Odessa, 65082 Ukraine
2Institute of Combustion and Innovative Technologies, Odessa, 65082 Ukraine
Keywords: biofuel, diesel, rapeseed methyl ester, droplet-air mixture, combustion, burning time

Abstract

This paper presents the results of theoretical and experimental studies of the combustion of rapeseed methyl ester droplets in comparison with mineral diesel fuel. Droplets of 0.7-1.2 mm diameter were investigated. The effect of the oxidizer equivalence ratio in the range of 1.7-4.0 on the duration of droplet combustion was analyzed using the model of combustion of droplets in an adiabatic shell taking into account Stefan flow. It is shown that the burning time of rapeseed methyl ester droplets is smaller than that of diesel fuel droplets, all other things being equal.