STATIC PRESSURE-DROP THROUGH BARLEY-GRAIN

An experimental study has been performed in order to measure drops in static pressure across columns of barley grain. It was designed to det ermine the effect of grain moisture content, grain depth, flow rate an d bin diameter on resistance to airflow. Airflow ranging from 0.1 to 0 .7 m(3) s(-1) m(-2), moisture content levels of 8, 15, 17 and 21.7% (w et basis), bed depths of 31, 62, 93 and 124 cm and bin diameter of 15. 24, 20.32 and 25.4 cm. Airflow resistance was accurately described by the well known Shedd's equation. Resistance to airflow decreased with increased grain moisture content and decreased airflow rate and bed de pths. The airflow resistance increases as the decrease of the bin diam eter especially at high grain moisture content.