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http://dx.doi.org/10.7776/ASK.2010.29.2.091

Application of Ultrasonic Wave to the Squeezing Process From the Seeds  

Kim, Jung-Soon (동명대학교)
Lee, Hui-Uk (부경대학교 음향진동공학협동과정)
Kim, Moo-Joon (부경대학교 자연과학대학 물리학과)
Ha, Kang-Lyeol (부경대학교)
Abstract
To improve the limit of efficiency of squeezing oil in a conventional method, which seeds are compressed simply, the adoptability of the additional energy by the ultrasonic wave was investigated experimentally. As the results, using the ultrasonic vibration from the Langevin-type transducer, the efficiency was increased up to 25 %, whereas the conventional method has 15% efficiency. To investigate the additional pressure by the ultrasonic wave, the acoustic impedance of the sample and the vibration velocity of the transducer were measured. Although the amplitude of the ultrasonic is about 2.8 % of the compression pressure, the efficiency is increased a lot as mentioned above because the pressure is changed according to ultrasonic period.
Keywords
Ultrasonic Transducer; Squeezing Efficiency; Compression; Vibration Velocity; Acoustic Impedance;
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