Modeling the RF Heating Uniformity Contributed by a Rotating Turntable
€ 38.5
Descripción
To explore the potential of using an angle-adjustable rotating device to improve the radio frequency (RF) heating uniformity of packaged food powder, a 3-D mathematical model was established using moving domain approach to predict effects of different rotation directions, speeds and package dimensions on temperature uniformity of red pepper powder (RPP) in a cylindrical container heated in a 6 kW, 27.12 MHz parallel plate RF system. The calculated end point temperatures from the model were in good agreement with those of the experiment at nine locations inside the sample, with a smallest maximum temperature difference of 3.26 °C at all 9 locations. Temperature distributions on the upper, middle and bottom surfaces and the central vertical section of RPP measured by an infrared camera were also matched well with the simulation results, which validated the mathematical model.