To achieve system optimisation, computational fluid flow simulations were conducted. A
problem was discovered in the air distribution to both sides of the dryer, due to the
incorrect angle of an adjustable distribution flap. When the angle was adjusted to 45, the
air mass flows from both sides were equal. Furthermore the air distribution across the belt
width was inhomogeneous, studied by measurements of the air temperature and product
moisture distribution. The simulation of the airflow led to the addition of air guiding plates.
The influence of the guiding plates adjoining the drying chamber was confirmed by the
fluid path length of the hot air. The study resulted in an optimised airflow over the drying
area and uniform product moisture content