In the process of microwave heating and drying, microwave drying and microwave vacuum drying equipment are very necessary. Their division of labor is different, but they can achieve the effect of heating and drying. The operation principle of this process can be said to be the purpose of microwave heating because the field energy of the microwave field is converted into thermal energy in the medium, the temperature of the material is raised, and a series of thermalization and expansion are produced. Microwave vacuum drying usually has the following characteristics:
 1. Strong penetration
 Compared with other electromagnetic waves, microwave has longer wavelengths, so it can be used for good penetration. In the microwave permeable medium, the temperature of medium caused by dielectric loss increases almost at the same time, heating the internal and external heat of the dielectric material, forming the body heat source state, which greatly shortens the heat conduction time in the conventional heating.
 2. Small thermal inertia
 Because of the small thermal inertia of microwave, microwave heating and drying can save energy. The output power of microwave can be adjusted at any time. The temperature rise of the medium can be changed without inertia. There is no "waste heat" phenomenon, which is very beneficial to the need of automatic control and continuous production.
 3. Selective heating can be achieved during heating

Different materials have different heat effects. Water molecules are polar molecules with large dielectric constant, large dielectric loss factor and strong absorptive capacity for microwave. The dielectric constant of protein and carbohydrate is relatively small, and its absorption ability to microwave is much smaller than that of water.
The above is the characteristic shown in the process of microwave heating, which can bring more convenience to our life. If there is a need for microwave vacuum drying equipment, please contact: 0519-88386111.