Studies on Drying Mechanism of Wheat——Theoretical analysis of drying process

On the basis of the already achieved wheat thin layer drying characteristic curve,this paper discussed wheat thin layer drying exponential model and drying constant K formula by regressive calculation, pointed out that drying process should be divided into two phases according to periods with two different K. The paper also established wheat e-quilibrium moisture content model,set concept of dynamic equilibrium content,conducted nondimensional formulae and transferring method between nondimensional and dimensional formulae, and therefore a formula of water content, drying speed and mean change affected by air condition and drying speed at different layers in wheat drying process was calculated.