Grain drying principle is based on the equilibrium moisture content of grain, place food in low relative humidity of the air, food releases moisture and dry. But the food releases moisture slowly at room temperature, so to enhance the grain and drying temperature and lower relative humidity of drying medium, increasing the velocity of drying medium, to accelerate the evaporation of moisture in cereals and dry.

In thermal-convection grain dryer is the use of heated air as a carrier, supply calories of food warming and evaporation and will evaporate the moisture away.Click here to inquiry.