Study on atomization and evaporation property of biodiesel

The No.0 diesel was selected to mix with biodiesel made by rough soybean oil in ten different proportions to form the mixed fuels. Their flash point, distillation temperature, kinematic viscosity and density were tested. On the basis of atomization quality evaluation for fuel, the comparison among biodiesel/diesel blend fuel was analyzed by using high resolving power digital camera. This paper calculated droplet size distribution, cumulative droplet size distribution based on volume and mean diameter. The results indicate that the evaporation property indexes of biodiesel are worse than those of diesel. When biodiesel mixed ratio increases, mean diameters of the fuel droplet of spray increase, curves of fuel droplet size number distribution and cumulative droplet size distribution based on volume move toward larger diameters. It shows that the higher the biodiesel mixed ratio is, the worse the atomization quality is.