Moving packed bed drying can reduce the costs of transportation and storage of products. Grain dryers can be categorized into fixed bed dryers, fluidized bed dryers, rotary kilns and moving bed dryers.
A packed moving bed dryer using the air of low temperature (100℃) was developed in order to get large amounts of grain with required moisture in a given time.
Jon Chol Jin, a section head at the Faculty of Thermal Engineering, has proposed a steady moisture equation for analysing a grain drying process at a packed moving bed, and carried out a numerical simulation based on the governing equations of the grain energy equation.
The simulation results showed that the grain moisture grows lower when the moving velocity of the packed bed becomes lower.
The present model can be applied to predicting the positional distribution of physical quantities such as temperatures of air and grains as well as the relative humidity of air and the moisture content of grains in an arbitrarily-shaped packed moving grain dryer.
For further details, please refer to his paper “Steady State Analysis for Heat and Mass Transfer of Moving Grain in Cylindrical Dryer” in “Proceedings of KUTIC-2025”.