Simulação de secagem de feijão em fluxo cruzado.

Abstract

Drying ls one of the more utilized operations for condicionment of agricultural products with storage purpose. In order to obtain good quality and produtuvity conditions, it is necessary to know the parameters influence the operations mechanisms. On the way to get especific informations about the drying operation is by means of the mathematical simulation, with low cost as well as reduced time process in comparison with mathematical metnods. The objective of the present work was to develope a simulation project for the drying of "Carioca" beans in cross-flow, involving mathematical models, definitiona of parameters and numerical methods. To obtain a number of data and to evaluate the performance of the simulations project it was to make a set of experimental in tests a pilot scale conveyor drier. Some operations conditions like residence time, thickness layer of beans and the temperature were studied. From these experimental tests were obtain parameters for the Simulator as well the constante for the thin layer equations of the model. The simulation project proposed was considered satisfatory when compared with the experimental results. But it' is necessary to make some adjustment in order to improve its performance.