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Abstract
High-power ultrasonics (HPU) is a green emerging technology that offers a great potential
for a wide range of industrial processes. Nevertheless such potential have remained
restricted during many years to a limited number of applications which reached commercial
development. The possible major problem for extending the range of HPU industrial
applications has been the lack of power ultrasonic transducers for large-scale application,
adapted to the requirements of each specific problem with high efficiency and power
capacity. A new family of HPU transducers with extensive radiators have been recently
introduced. It comprises a variety of transducer types designed with the radiators
adapted to different specific uses in fluids and multi-phase media. Such transducers
implement high power capacity, high efficiency and radiation pattern control. In addition,
their design incorporate strategies to eliminate or reduce modal interactions produced
at high power as a consequence of their nonlinear behaviour. The introduction of such
new transducers has significantly contributed to the development at semi-industrial
and industrial level of a number of processes in the food and beverage industry, in
environment and in manufacturing. This paper deals with the basic structure and main
characteristics of such transducers as well as their performance in the developed
application processes.