Experimental prototype of silo-dryer-aerator of grains using Computational Fluid Dynamics (CFD) system

• Main Authors: Paulo Carteri Coradi, Angelo Francisco Calegare Lemes
• Format: Article
• Language: English
• Published: Universidade Estadual de Maringá 2019-05-01
• Series: Acta Scientiarum: Technology
• Subjects: drying of agricultural products; distribution of air drying; sizing of drying system.
• Online Access: http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/36949

The aim of this study was to size up and evaluate a fixed bed experimental silo-dryer-aerator with four static grain drying cells for segregation lots, through simulations with mathematical equations and a computational fluid dynamics (CFD) system. The average specific energy consumption of the dryer was 2,998.56 kJ kg-1 of evaporated water. At the global scale, the amount of heat needed to complete a grain drying was 22,283.84 kcal (5,325.96 kJ kg-1) and the amount of heat required to complete the cooling of a stored grain mass was 3,525 kcal (842.49 kJ kg-1). The drying equipment responded positively to the dynamic aspects of air, distribution, flow, pressure, speed and heating. The results obtained allow us to conclude that the silo-dryer-aerator prototype was characterized as a viable and sustainable tool, making it possible to perform the drying and storage of grains in standardized and segregated lots, according to genetic characterization, minimizing quantitative and qualitative losses.