Microwave drying sterilization characteristics

Microwaves are electromagnetic waves with frequencies between 300 MHz and 300 GHz. The water molecules in the material of the heated medium are polar molecules. Under the action of the fast-changing high-frequency electromagnetic field, the polar orientation will change with the change of the external electric field, resulting in molecular motion and mutual friction.
At this time, the field energy of the microwave field is converted into thermal energy in the medium, so that the temperature of the material is increased, and a series of physicalization processes of heating and expansion are generated to achieve the purpose of microwave heating and drying.
Microwave drying machinery and equipment heating characteristics
: 1, heating speed is fast. Microwave heating is completely different from traditional heating. It is a process in which the material to be heated becomes a heating element and does not require heat conduction. Therefore, even in the case of a material having poor thermal conductivity, the heating temperature can be reached in a very short time.
2, energy efficient. Since the substance containing moisture easily absorbs microwaves and generates heat, there is almost no loss in addition to a small amount of transmission loss, so that the heat efficiency is high and energy is saved.
3. Heat evenly. Regardless of the shape of each part of the object, microwave heating can evenly penetrate electromagnetic waves in the surface of the object to generate thermal energy. Therefore, the heating uniformity is good, and the external coke endogenous phenomenon does not occur.

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