Abstract
By the ultrasonic preventing and removing fouling test-bed, study on the effect of velocity on ultrasonic propagation characteristics by experiment. Keep the liquid temperature, ultrasonic emission frequencies and power constant. In the heat exchange tube, measure the ultrasonic sound intensity at the inlet and outlet of the pipeline, when the liquid velocity changed. The results show that, at normal temperature (25°C), the input power and ultrasonic frequency keeping constant, the ultrasonic sound intensity decreased gradually firstly and then increased with the change of the liquid velocity changed from 0m/s to 2m/s. The ultrasonic sound intensity attain minimum when the liquid velocity about 0.45m/s.
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