1.Working principles: Microwave dryer uses the energy of microwave radiation to heat and dry materials, while hot air dryer uses hot air to heat and dry materials.
2.Heating methods: Microwave dryer uses electromagnetic waves to directly heat the internal molecules of the material for drying, which is heated from the inside to the outside; while the hot air circulation dryer is used to dry the surface of the material and the surrounding air through hot air circulation, which is heated from the outside to the inside.
3.Drying Efficiency: Since microwave dryer can directly heat the inside of the material, the drying speed is faster, while the hot air circulation oven takes a longer time to dry the material.
4.Drying effects: Microwave dryer is not prone to problems such as crusting and color difference when drying, and can maintain the nutritional content of the material; while hot air circulation dryer is prone to problems such as crusting and color difference, and the nutrients of the material may be lost.
