Abstract
This study examines the thermophysical properties of corn grain and corn cobs at various moisture content levels. The aim of the research was to determine the specific heat capacity, thermal conductivity, and thermal diffusivity for the analysis of thermal treatment and drying processes of corn. In addition, thermophysical characteristics, including the density of corn grain and cobs, were determined, and the dependence of these parameters on moisture content was established. The obtained relationships allow for a more accurate description of heat and moisture transfer processes during the drying and storage of corn. To determine the thermophysical properties of corn cobs, the ITP MG4-100 device was used, which provides measurement of the main thermophysical parameters with the required accuracy. A spherical bicalorimeter was also employed to determine the thermophysical properties of corn grain and to calculate the main thermal characteristics of the material. Measurement of temperature parameters on the surface of corn cobs was carried out using a Fluke infrared thermometer, which enabled temperature monitoring during the experiment. Drying of the samples was performed in the «ShS-40 SPU» drying unit within specified temperature and humidity ranges. During the study, the thermophysical properties of corn grain and cobs at different moisture contents were determined. Moisture transfer processes were also investigated; as a result of drying, the moisture content of the product decreased from 72% to 60%. Analysis of the experimental data and the obtained relationships contributes to the development of thermal treatment and drying methods aimed at improving the efficiency of corn drying.