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In recent years, the absolute acceptance of biodiesel as an alternative fuel and lubricant has rapidly grownup in worldwide accompanied by decrease raw materials of fossil oil as well risks related by highly carbon content for the exhaust gases emissions. It is expectant that biodiesel production will be taking status more importantly in the coming years, as such, extraction processes and production plan will be more critical than ever in particular with provide database about vegetable oils characteristics because these oils especially jojoba oil is one of the most important sources for making biodiesel. Current study aims a resonance technique application assisted mechanical extraction on jojoba oil recovery with a view to purpose optimizing machine efficiency, power produced and heating value for jojoba oil during the entire process. An extremely important property of this design is ability to oscillation at a certain frequency, so a control unit was linked to operate this technique which allows to change the value of capacitance on different frequencies in designed circuit. The experiments were executed to detect the effect of studied parameters like resonance frequency levels (60, 70, 80 and 90 kHz) and extraction speeds of press screw (40, 45, 55 and 65 rpm) on evaluation indicators through a resonance technique application as well as has been presented a comparison among some main indicators for jojoba oil and fossil fuel specifications. The obtained results evidenced highly significant differences (P < 0.01) among frequency levels, extraction speed and their interaction for all evaluation indicators. Machine efficiency of 95.23% was reached for resonance treated sample at 80 kHz frequency level and extraction speed of 55 rpm when compared to 75.00% for control sample with improves the extraction yield by 34.30%. Furthermore, produced power and heating value were 1306 kW and 4701 MJ.h-1 under the same pervious conditions.

DESIGN OF RESONANT CONTROLLER SYSTEM CONNECTED WITH OIL EXTRACTION MACHINE