A Novel Approach to Evaluate the Heating Performance of a Radio Frequency Oven
Heating with radio frequency is an alternative thermal process which is usually efficient and rapid compared to
conventional thermal processes. A well-designed RF heating unit plays a major role on the efficiency of the process.
Different parameters effect the heating performance of the system such as dielectric and geometrical properties of the
material, electrode gap and so on. Designing the heating unit of the system for a specified material, one should measure the
effectiveness of the proposed parameters. In this study, a heating performance criterion, called heating performance index,
was proposed. This is a practical equation which can be applied easily to the experimental results. This index was applied to
different sets of experiments and the effect of material thickness, electrode gap and the position of the material within the RF
cavity was determined.
Keywords- radiofrequency; heating performance index; temperature uniformity.