Enhancement of Convection Heat Transfer in Air Using Ultrasound

The use of ultrasound is a new method to enhance convection drying. However, there little information in the literature on improvement convective heat transfer caused by ultrasound. Therefore, transport during ultrasound-assisted heating small samples hybrid dryer was experimentally examined. A Biot number regime considered. results confirmed great enhancement due application Due ultrasound, exchange coefficient increased from 45% almost 250%. linear function applied power. It shown that energy absorption existed, but thermal effect this very small.