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Analysis of the Ultrasonic Cavitation Energy in a Large-Scale Sonoreactor  

Son, Younggyu (Department of Civil, Environmental and Architectural Engineering, Korea University)
Lim, Myunghee (Department of Civil, Environmental and Architectural Engineering, Korea University)
Kim, Wonjang (Saemangeum Project Office, Korea Rural Community & Agriculture Corporation)
Khim, Jeehyeong (Department of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of Korean Society on Water Environment / v.24, no.1, 2008 , pp. 129-134 More about this Journal
Abstract
Ultrasonic cavitational energy distributions were measured in a large-scale sonoreator. In application of 110 and 170 kHz of ultrasound, the cavitational energy was just detected near the transducer module. However 35 and 72 kHz ultrasound made good distributions from the module to the end of the sonoreactor, Especially, 72 kHz ultrasound application showed most stable and highest cavitational energy value through the whole length. In the comparison between input power and cavitational energy, linear relationships were obtained in 35 and 72 kHz and it was anticipated that these results would be used for the optimization of input power for the design of sonoreactors. And three dimensional energy distribution was depicted through the mapping of cavitaional energy. Average energy in the large-scale sonoreactor was estimated as 62.8 W, which was about 40 % of input power.
Keywords
Cavitation energy; Energy conversion efficiency; Frequency; Input power; Large-scale sonoreactor; Mapping;
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