Quantification Of The Coring Operation For Wheat

LEANDRO CARDOSO; RICARDO BARTOSIK; JUAN RODRIGUEZ

Chicago, Illinois, EEUU

Congreso; International Grain Quality and Technology Congress; 2008

The objectives of this research were to quantify the distribution of fine material in wheat bins, the center-side distribution of the airflow, the improvement on the airflow distribution due to the coring operation, and the amount of grain to be unloaded during coring. The coring operation required to unload from 11 to 15 tonnes of wheat from bins that ranged from 470 to 700 tonnes of capacity (2.1% to 2.3% of the grain mass). This operation removed from the center of the bin most of the fines concentrated during the bin loading operation. The decrease on fine concentration at the center of the bin was of 30%, and the specific airflow rate at the center of the bin increased up to 150%. An additional benefit of the coring operation was the removal of insects located at the core of the bin (most of them external feeders). The coring operation significantly increased the total airflow in the bin and resulted with a more uniform airflow distribution. This would substantially improve the performance of the aeration system, allowing for a better and safer wheat storage condition.