Determinação das vazões mínimas de ar para secagem de milho a baixas temperaturas no Estado da Paraíba.

Abstract

Based on the climatic classification of CW THORNTHAITE (1940), the cities of Campina Grande and João Pessoa-Pb were established to perform the drying tests of hybrid corn (Zea mays L.) at low temperatures, to validate the original model of THOMPSON (1967), modified with the introduction of the yarn layer equation proposed by MISRA and BROOKER (1980). Corn drying was simulated for the mean conditions recorded in the field tests and the theoretical and experimental results were compared. The comparison of the experimental data with the simulated ones, through the chi-square test, demonstrated the validity of the THOMPSON (1967) model, modified with the insertion of the thin layer equation proposed by MISRA and BROOKER (1980), for the simulation of drying of hybrid maize at low temperatures. As the MOREY et al. (1978) model improves the THOMPSON model (1967), the thin layer equation proposed by MISRA and BROOKER (1980) was introduced to the first model to determine the minimum air flow rates for drying corn at low temperatures in the State of Paraíba. The results showed that the mean minimum flows indicated for the state of Paraíba vary from 4.42 to 12.88m / min per ton of grain, except for the arid region.