In large parts of China, grain moisture is generally higher than the safe moisture postpartum. It is not conducive to storage. By grain drying method, it can be divided into the dryer. Grain dryer advantages are: high production capacity and high degree of automation. The disadvantage is the high cost, fuel consumption and maintenance inconvenient. The dryer works are:

Grain drying flowchart and steam are not directly in contact with the food, but through metal pipes, food pipeline flowing outside to absorb heat, after heating food temperature. Its internal moisture transfer from the surface of vaporization, the vaporization of the water away from the drying medium, thereby reducing grain moisture. According to their works, saving measures are as follows: improved drying medium. For grain drying time can be mixed with steam and take a substance known as drying medium. According to the definition of the apparent drying medium, if the drying medium to maximize the drying process of heating food. And to continue to vaporize water vapor away, then the food will be dry. And it depends on the capacity of the drying medium package of water vapor.

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