The Effect of Temperature and Mixing on the Density and Viscosity of Jojoba-diesel Fuels

Abstract

The density and viscosity of several jojoba oil biodiesel–diesel fuel blends (B10, B20, B30, B50, and pure fuels B0 and B100) were measured for almost the first time according to the corresponding ASTM standards. In order to predict these properties, mixing rules are evaluated as a function of the volume fraction of biodiesel in the blend and also to check the validity of the mixing rules. The absolute percentage deviations obtained were low, demonstrating the suitability of the used mixing rules. The jojoba biodiesel and its blends have slightly higher density and viscosity, however, the kinematic viscosity may be lowered significantly by increasing the temperature of the fuel. The current work presented lacking data for the jojoba biodiesel and its blend with diesel. These data are required for further experimentation of the fuel, or for simulation and modeling purposes.

Keywords:

• biodiesel
• density
• diesel engine
• jojoba
• mixing rule
• viscosity

ACKNOWLEDGMENT

The help of the chemical engineer, Hassan Kamal, Chemical and Petroleum Engineering Department, Faculty of Engineering, UAE University is gratefully acknowledged in measuring the physical properties of the fuels.