COMPUTATIONAL ANALYSIS OF GAS SOLID FLOW IN A PNEUMATIC DRYER

Abstract: This work presents a design of drying small food particles like tea, tobacco with a reduced height of about fifty percent compared to the convectional straight type. The geometry is designed such that, the particle leave the dryer at an average constant time, to prevent variation in the dryness properties, Simulation result of straight type dryer in FLUENT, the commercial software is validated by industrial data implemented in MATLAB, which shows reasonable agreement. A reduced height type with a swirling or screw type is designed to reduce the height and also maintain the drying residence time.