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对超声波参数和换热器参数对超声波空化效应影响的研究,能够找出最佳的超声波参数使其防除垢效果更好。本文利用数值计算方法研究了超声波功率、频率和换热器内介质温度以及换热管的型式对超声空化的影响。结果表明,随着超声波功率的增大,水中汽含率也增大,而且变化也相对激烈;随着频率的增加汽含率先增大后降低,20 kHz为最佳频率;介质温度越高,空化效应越强烈;管径波动较多的波纹管更有利于空化效应的产生和发展。
The effects of ultrasonic parameters and heat exchanger parameters on ultrasonic cavitation can be studied, and the best ultrasonic parameters can be found to make the anti-scaling effect better. In this paper, the effects of ultrasonic power, frequency, medium temperature in the heat exchanger and the type of heat exchange tube on ultrasonic cavitation are studied by numerical calculation. The results show that with the increase of ultrasonic power, the vapor content in water also increases, and the changes are relatively fierce. The vapor content first increases and then decreases with the increase of the frequency, and 20 kHz is the best frequency. The higher the medium temperature, Cavitation effect is more intense; corrugated pipe with more fluctuations in diameter is more conducive to the production and development of cavitation effect.