Abstract
This paper suggests a new method of using ultrasound to synthesize bio-diesel fuel (BDF) from vegetable oil. Be different with the conventional method, the new method utilizes ultrasonic sonochemical effect of heating and stunning to promote ester interchange instead of using external heater and stunner. In order to verify the feasibility of the suggested method, an experiment system to produce BDF using both ultrasound and the conventional method was designed and established. Investment of the thermophysical properties of the produced BDF was carried out. Also the experiment of applying the produced BDF to a diesel-engine vehicle for actual driving was performed too. As a result of those experiments, it is confirmed that the method of synthesizing BDF by using ultrasound is reasonable and the thermophysical properties are suitable for diesel engine vehicle.
