Liquid atomization is utilized across various industrial applications, including nanopowder production, spray drying, fuel combustion, coating applications, emulsion preparation, and in medical devices. The use of ultrasonic energy for atomization offers advantages in terms of environmental sustainability compared to other methods. Notably, ultrasonic atomization can achieve finer dispersion with a narrow droplet size distribution at relatively low energy consumption, which is crucial for certain technological applications. One significant application of fine liquid atomization technology is in the disinfection of air and surfaces. The development of efficient and eco-friendly methods for air and surface disinfection has become particularly relevant in light of the spread of dangerous infections, such as the coronavirus. However, ultrasonic liquid atomization is characterized by low flow rate, limiting its applicability. The creation of a combined method that integrates the benefits of both ultrasonic and hydraulic atomization could enhance process efficiency while maintaining high droplet fineness. This study investigates the physical processes involved in cavitation-based aerosol formation and describes the design of an acousto-hydraulic atomizer for implementing the proposed combined atomization method. Theoretical and experimental analyses identified the critical conditions for the transition to the optimal spray mode and key characteristics of atomization. It was found that the simultaneous application of ultrasound and hydraulic pressure enables the production of fine sprays (with a minimum droplet diameters up to 45 µm) at high flow rates (10 ml/s or more). The study demonstrates that the new acousto-hydraulic atomization method can generate a disinfectant aerosol cloud at high speeds. This work highlights the method’s significant potential for sanitary measures, conducted with safety requirements in mind, thereby contributing to the preservation and improvement of public health globally.

中文翻译：

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用于产生用于空气和表面消毒的细气溶胶的高性能声水压法


液体雾化用于各种工业应用，包括纳米粉末生产、喷雾干燥、燃料燃烧、涂层应用、乳液制备和医疗设备。与其他方法相比，使用超声波能量进行原子化在环境可持续性方面具有优势。值得注意的是，超声波原子化可以以相对较低的能耗实现更精细的分散和窄液滴尺寸分布，这对于某些技术应用至关重要。精细液体雾化技术的一个重要应用是空气和表面的消毒。鉴于冠状病毒等危险感染的传播，开发高效且环保的空气和表面消毒方法变得尤为重要。然而，超声液体雾化的特点是流速低，限制了其适用性。创建一种集成超声波和水力雾化优点的组合方法可以提高工艺效率，同时保持高液滴细度。本研究调查了基于空化气溶胶形成所涉及的物理过程，并描述了用于实施所提出的联合原子化方法的声水力雾化器的设计。理论和实验分析确定了过渡到最佳喷雾模式的关键条件和雾化的关键特性。研究发现，超声和液压的同时应用能够在高流速（10 ml/s 或更高）下产生细喷雾（最小液滴直径高达 45 μm）。 研究表明，新的声水雾化方法可以高速产生消毒剂气溶胶云。这项工作突出了该方法在卫生措施方面的巨大潜力，在考虑安全要求的情况下进行，从而为维护和改善全球公共卫生做出贡献。