POWER MEASUREMENT IN SONOCHEMISTRY

This paper is devoted to power measurements at different locations of an ultrasonic device: the power displayed at the frequency generator, the electrical power input at the transducer (by measuring the applied voltage and intensity) and the acoustic power dissipated in the liqui d medium (determined by a calorimetric method). These different measur ements were recorded and compared for different media and different li quid heights in the reactor. When a chemical reaction takes place, the chemical yield was plotted against the different power measurements. The dissipated acoustic power per unit volume, although less accurate, appears to be the best measurement to establish a correlation with th e influence of ultrasound on a chemical reaction.