Pattern Identification and Modeling of Energy-Efficient Operating Modes in Grain Micronization

The article addresses the critical issue of improving the energy efficiency of grain processing using thermo-radiation micronization. The research aims to substantiate energy-efficient processing modes that ensure increased equipment productivity while simultaneously reducing specific energy consumption. To achieve this goal, an improved mathematical model that describes complex heat and moisture transfer processes in grain during intensive infrared (IR) irradiation was developed. Based on direct experimental data, the model’s parameters were identified, enabling adaptation to real-world production conditions. The article proposes a simplified mathematical description of the patterns of raw material heating and dehydration suitable for engineering calculations. Special attention was paid to the analysis and modeling of oscillating modes, which involved alternating IR irradiation with periods of grain cooling by airflow. It was also demonstrated that such an approach allows for intensifying moisture removal without overheating the product. The research results provide a basis for implementing the oscillating mode as cyclic-pulse irradiation with intermediate forced cooling. This approach is the most effective, as it ensures moisture removal with 20–30 % less energy consumption and reduces surface overheating compared to continuous IR irradiation.