Abstract
Equilibrium moisture content of five kinds of cereal grains, rough rice, wheat, barley, pearl barley and soy bean, was measured and fitted with the Chen-Clayton's equation. On the basis of these results, the latent heat of vaporization of water in the grains (steric heat) was calculated precisely from the Clausius-Clapeyron's equation without the assumption in Othmer plot principle. Moreover an empirical equation for estimating the latent heat in the grains was developed as a function of moisture content and temperature, and fitted to the heat in high goodness of fit.
