Advantages and Disadvantages of Dielectric Heating

Advantages and Disadvantages of Dielectric Heating

Advantages of Dielectric Heating :

1. The heating is uniform.
2. It is possible to control the heat automatically.
3. There are no-products of the heating process.
4. heating process is neat and clean.
5. The process of heating is free from gases and ash.
6. It is possible to achieve high rate of heating.
7. The heat delivered to work piece can be precisely controlled.

Disadvantages of Dielectric Heating :

1. It is not possible to increase the supply voltage beyond the breakdown of the dielectric material.
2. it is not possible to increase the frequency of ac source beyond the resonant frequency of the electrodes and the capacitor formed by the electrodes and job.
3. For better quality, it is necessary to apply a uniform field.