ABSTRACT

As reducing the energy consumption, as well as improving the quality of dried grain, is of great importance in the modern world, the present paper aims to develop an empirical-mathematical modelling approach for investigating the drying kinetics of cereals under variable heat supply. This approach is based on a stitching method and substantiates the layer height (or specific load) regulation of a product in different zones of a dryer. The proposed model made it possible to determine temperature distribution in the grain layer and substantiate the permissible range of thermal-humidity conditions for drying cereals in adjustable grain load conditions. A developed software-based algorithm for controlling the drying process of cereal grain under variable heat supply became a basis for designing a grain dryer changing the grain layer height from compartment to compartment. An original grain dryer design enables the adjustment of the specific grain load on the gas distribution grid, facilitating the occurrence of uniform drying and minimal energy consumption.

摘要

由于降低能源消耗以及提高干燥谷物的质量在现代世界中非常重要，因此本文旨在开发一种经验数学建模方法，用于研究可变供热下谷物的干燥动力学。这种方法基于缝合方法，并证实了干燥机不同区域中产品的层高（或特定负载）调节。所提出的模型可以确定谷物层中的温度分布，并证实在可调节的谷物负载条件下干燥谷物的热湿条件的允许范围。一种用于控制可变供热下谷物干燥过程的基于软件的开发算法成为设计谷物干燥机的基础，改变谷物层高度从隔间到隔间。独创的谷物烘干机设计，可以调整配气网的特定谷物负荷，实现均匀烘干和最低能耗。