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超声波应用在换热设备中已表现出显著的防垢性能,而超声空化作用又是防垢主要因素。采用数值方法对管内超声空化流场进行模拟,研究在超声波作用下圆管、横纹管、波纹管内析晶污垢的沉积过程,并引入实验除垢率对析晶污垢剥蚀率进行修正,进而对不同管内析晶污垢沉积特性进行对比探究。结果表明:超声波对横纹管的防垢效果最佳、对波纹管的防垢效果最差。因此,本研究将为工程中采用超声波防垢时对于管道类型的选择提供一定的参考依据。
Ultrasonic applications have shown significant antifouling properties in heat exchange equipment, and ultrasonic cavitation is a major cause of scale inhibition. Numerical simulation is used to simulate the ultrasonic cavitation flow in the tube. The deposition process of the crystal fouling in the tube, cross tube and corrugated tube under ultrasonic wave is studied. The rate of descaling is introduced to modify the fouling rate. A comparative study of the deposition characteristics of the precipitates in different tubes was carried out. The results show that the ultrasonic tube has the best anti-scaling effect on the bellows and the worst anti-scaling effect on the bellows. Therefore, this study will provide a reference for the selection of pipeline types when using ultrasonic anti-scaling in the project.