High-Performance Acousto-Hydraulic method for generating fine aerosols for air and surface disinfection.

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.

Improving agglomeration efficiency of aerosols with sizes less than 2.5 µm by generation of vortex streams in inhomogeneous ultrasonic field.

In this paper a new approach to increase the agglomeration efficiency of finely dispersed aerosols by generating toroidal vortex streams in inhomogeneous ultrasonic field is proposed and studied. From the obtained experimental results (for two types of emitters) it could be established that the toroidal vortex streams generated in an inhomogeneous ultrasonic field provide an increase of the agglomeration efficiency when exposed to a gas-dispersed flow injected into the agglomeration chamber at a speed of up to 0.2 m/s.

Experimental and computer study of the mechanism and identification of conditions for energy-efficient removal of moisture from materials under ultrasonic exposure.

The article is devoted to investigation of energy-efficient moisture removal from capillary-porous materials. Moisture is removed by dispersion at collapse of cylindrical cavitation bubbles, formed by ultrasonic vibrations in the capillaries of the material. Mathematical model, which allowed to investigate the mechanism of moisture dispersion, has been developed.

Summation of high-frequency Langevin transducers vibrations for increasing of ultrasonic radiator power.

This article presents the results of the development and study of an ultrasonic radiator (US radiator) of increased power, which is designed for control, location, cavitation processing of liquids, and coagulation of foreign particles in a gaseous media at frequencies from 30 to 90 kHz. The proposed method of vibration summing of low-power high-frequency Langevin transducers on a diametrically vibrating the summing radiating element (summator) allowed developing such a US radiator. The selecting of shape and the search of optimal dimensions allowed creating real designs of US radiator with operating frequency up to 90 kHz.

Ultrasonic Transducer With Increased Exposure Power and Frequency up to 100 kHz.

A new design of a high-frequency piezoelectric transducer with a power from 70 to 1800 W (designed for radiation into liquids and gases of ultrasonic (US) vibrations in the frequency range of 30,…,100 kHz) is proposed. It is based on the principle of summation on a diametrically vibrating summing plate of vibrations of radially mounted Langevin transducers. The method of their design was created and the optimal design dimensions of the transducers were established.

Improving the separation efficient of particles smaller than 2.5 micrometer by combining ultrasonic agglomeration and swirling flow techniques.

The method for increasing the separation efficiency of particles smaller than 2.5 micrometers by combined ultrasonic agglomeration and swirling flow technique is proposed in the article. The swirling flow creates areas with an increased concentration of particles on the outer radius of the vortex.