Abstract
The fundamental physical properties of buckwheat required to design drying equipment were measured and analyzed as follows:
(1) The equilibrium moisture content for desorption process, the hysteresis and the heat of moisture vaporization were measured, and the parameters of the empirical formulae were determined.
(2) The densities and the coefficient of the thermal and hygroscopic expansion were measured, and the parameters of the empirical formulae were determined.
(3) An attempt of drying simulation was made by considering the local moisture dependence on the diffusion coefficient.
