Abstract

Several studies have been conducted for developing new dryers and improving existing ones to obtain a higher yield and maintain the quality of agricultural products. Thus, the objective of this study was to model and validate a new concept of a silo–dryer–aerator with a drying chamber and four storage compartmented cells in a fixed and thick layer with the application of high and low air-drying temperatures. To fit the experimental data to a mathematical model, nonlinear regression analysis was performed. To assess the fluid from the heated and cooling air in the silo–dryer–aerator, computational fluid dynamics was used. The experimental prototype of the fixed-bed dryer enabled a uniform distribution of the heated air in the drying cells. There was a uniform distribution of the air in the drying cells of the silo–dryer–aerator. The drying system achieved high operational performance and quality for soybeans. The different mathematical models could predict and adjust to the drying conditions in a fixed and thick layer. It was concluded that the drying model developed and validated is suitable for the new concept of a silo–dryer–aerator with a drying chamber and segregated storage to be applied to soybean drying.

• HIGHLIGHTS

• Silo-dryer-aerator conceptualized for high quality

• Drying system applied for different social scales of post-harvest

• Segregation of the lots in different characteristics of grains and quality

• Associated application of high and low temperatures in the drying and aeration

• Alternative for drying and storage in large, medium and small production scales

摘要

已经进行了几项研究以开发新的干燥机并改进现有的干燥机以获得更高的产量并保持农产品的质量。因此，本研究的目的是模拟和验证筒仓-干燥机-曝气器的新概念，该概念具有干燥室和四个储存隔间的固定层和厚层，应用高低空气干燥温度。为了将实验数据拟合到数学模型，进行了非线性回归分析。为了评估筒仓-干燥机-曝气器中加热和冷却空气中的流体，使用了计算流体动力学。固定床干燥器的实验原型使加热空气在干燥单元中均匀分布。筒仓-干燥机-曝气机的干燥单元中的空气分布均匀。该干燥系统实现了大豆的高运行性能和质量。不同的数学模型可以预测和调整固定和厚层中的干燥条件。得出的结论是，开发和验证的干燥模型适用于带有干燥室和隔离储存的筒仓-干燥机-曝气机的新概念，适用于大豆干燥。

• 强调

• 高品质的筒仓-干燥机-曝气机

• 适用于不同社会规模的采后干燥系统

• 不同粮食特性和品质的批次分离

• 高低温在干燥曝气中的关联应用

• 大、中、小生产规模的干燥和储存替代方案