The drying speed of pepper tunnel microwave dryer is reduced hundreds of times

The < strong > pepper tunnel microwave dryer is a new type of drying method. Microwave heating is a whole heating mode. The microwave penetration is deep. The temperature of heating inside the material is higher than that of the surface. It promotes the moisture and heat inside the material to diffuse from inside to outside in the same direction. Therefore, the heating speed is fast and the moisture is raised from inside to outside quickly. This is different from the drying process of hot air drying (because the characteristics of hot air drying are that the surface is heated inward, the heat transfer speed is slow, and the heating uniformity is not high). Pepper tunnel microwave dryer uses microwave pipeline equipment. Pepper is 10-20 mm thick on the conveyor belt. Pepper is heated inside and outside the microwave oven under the action of microwave energy. It takes only 20-30 seconds to rapidly heat up to 80-100 degrees. Pepper is dehydrated quickly. The evaporated water vapor is discharged through the exhaust fan. Temperature and heating time can be controlled according to microwave power intensity. Microwave drying is also used to sterilize and prevent mildew of pepper powder. The non-thermal effect (biological effect) of microwave can quickly kill bacteria, insects and eggs in pepper powder at relatively low temperature, greatly prolonging the storage time of pepper powder and reducing the dependence on preservatives.

p>strong>pepper tunnel microwave dryer does not need fuel, pollution-free, heat conduction is not needed in the process of heating. At the same time, due to the simultaneous heating inside and outside of the object, the temperature difference between inside and outside of the material is small, the heating is uniform, and the heating quality is improved. When microwave drying materials, microwave energy directly acts on medium molecules and converts them into heat energy. Because microwave has penetrating property, it can heat both inside and outside the medium at the same time without heat conduction, so the heating speed is very fast. For food with water content below 30%, the drying speed can be reduced by tens to hundreds of times. Because the microwave heating drying process is the heat generated by the high-speed friction of the polar molecules of the pepper itself, it does not destroy the original nutritional components, color and flavor of the product. The drying speed of

pepper tunnel microwave dryer is reduced hundreds of times, and various types of drying equipment selection schemes and budget quotations are provided. This article comes from the drying equipment () network.