期刊
ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
卷 71, 期 9, 页码 762-771出版社
TAYLOR & FRANCIS AS
DOI: 10.1080/09064710.2021.1947360
关键词
Drying process; mathematical model; stitching method; variable heat supply
资金
- Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan [AP05130807]
This paper presents an empirical-mathematical modeling approach to study the drying kinetics of cereals under variable heat supply, allowing for regulation of product layer height in different zones and control of drying process with minimal energy consumption. The proposed model provides temperature distribution in the grain layer and establishes permissible thermal-humidity conditions for drying cereals.
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.
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