Study of the Variation of Kinematic Viscosity and Density of Various Biodiesel Blends with Temperature

Biodiesel has emerged as a non-toxic and biodegradable fuel for use in transportation sector as well as other applications, such heating and irrigation. Also biodiesel plays an important role in reducing the dependency of petroleum fuels and environmental pollution. Nevertheless, the higher density and viscosity are two important physical properties that affect fuel atomization, spray characteristics and combustion in an unmodified engine. The biodiesel used was produced from sunflower oil and mixed with diesel fuel in different proportions (B10...B100). Kinematic viscosity and density were measured at average climate conditions as 30, 40 and 50 degrees C. Several correlations are proposed to predict the correlation of density and viscosity and compare them with well-known models previously published in literature.