Hot air drying uses hot air as the drying medium, heating the material surface through natural or forced convection circulation. The entire drying process is from the outside in, making it inefficient. However, the hot air can be recycled, reducing energy consumption. Microwaves have strong penetrating properties, allowing them to heat the material both inside and out evenly, maintaining a nearly uniform temperature. However, microwaves are not recyclable. Combining hot air and microwaves maximizes their respective advantages and complements their respective disadvantages. This significantly increases drying rates and reduces energy consumption. Compared to traditional hot air drying, the shorter drying time significantly improves product quality. The combination rate of hot air and microwave can also be adjusted according to different products.
