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Microwave vacuum low temperature drying has seven major advantages:
1. Microwave vacuum drying equipment adopts electromagnetic wave heating, without heat transfer medium, directly heated to the inside of the object, and the heating rate is fast. The microwave of 1 kW can heat the water at normal temperature to 80 °C in 3-5 minutes, avoiding The above disadvantages, so the speed is fast, the efficiency is high, the drying cycle is greatly shortened, and the energy consumption is reduced. Compared with conventional drying technology, it can improve work efficiency by more than four times.
2, heating evenly, due to microwave heating, the material is heated simultaneously from the inside to the outside, the temperature difference between the inside and outside of the material is very small, does not produce the situation of internal and external heating inconsistent in the conventional heating, resulting in the effect of puffing, which is conducive to crushing, The drying quality is greatly improved.
3, easy to control, easy to continuous production and automation, due to the rapid adjustment of microwave power and inertia, easy to control, you can adjust the temperature between 40 °C -80 °C.
4, the small size, easy installation and maintenance, do not occupy too large a venue.
5, the product quality is good, microwave vacuum drying equipment in extending the shelf life, preserve the original flavor and nutrients of the food, retain the physiological activity of the raw materials, enhance the functionality of health food, and increase the added value of agricultural products. Compared with the conventional method, the quality of the processed product is greatly improved.
6, microwave has the effect of disinfection, sterilization, product safety and health; long shelf life.
7, using microwave heating, can save a lot of energy, increase the speed of heating and drying. This is because the microwave is penetrating, does not require any media when heating the object, and can simultaneously heat the inside and outside of the material. According to domestic and foreign data, the heating and heating of materials by microwave equipment is 4~10 times faster than the conventional heating method.
Among its characteristics, energy saving, consumption reduction, product quality improvement, safety and hygiene, and low equipment investment cost can be seen in the significant economic and social benefits of microwave drying.