Modelling of thermal processes in barrier ozonizer used in beekeeping
2020
Oskin, S., Kuban State Agrarian Univ. named after I.T. Trubilin, Krasnodar (Russian Federation) | Nikolaenko, S., Kuban State Agrarian Univ. named after I.T. Trubilin, Krasnodar (Russian Federation) | Voloshin, A., Kuban State Agrarian Univ. named after I.T. Trubilin, Krasnodar (Russian Federation) | Tsokur, D., Kuban State Agrarian Univ. named after I.T. Trubilin, Krasnodar (Russian Federation)
The use of ozonizers is important for disinfection of bee hives and bee equipment, as well as for prevention and treatment of bacterial diseases of bees. The main parameter affecting the operation of the ozonizer is the temperature of dielectric barriers of its discharge device. The present analysis of existing thermal models has shown that, despite numerous studies, there is currently no mathematical model of thermal processes in the ozonizer that would take into account its design parameters (material, size, number of sections), gas flow mode, convective heat exchange with the environment and would allow us to study the change in temperature fields throughout the entire volume of the installation over time. The geometric model of the barrier ozonizer and the stages of creating its thermal model are described in detail in the article. Mathematical processing of the resulting model was performed using the Comsol Multiphysics 5.4 program. The features of modelling in this program aimed at reducing the calculation area and calculation time are considered. Mathematical processing of the resulting model was carried out in two stages: first, a stationary air velocity field was calculated, and then a non-stationary thermal problem was solved. It is determined that this approach significantly saves computing resources. As a result of the calculation, the surfaces of temperature distribution in the entire volume of the ozonizer over time are obtained. To check the adequacy of the developed model, the ozonizer was manufactured on the upper surface of the discharge device, which had 3 temperature sensors installed. Comparison of the obtained theoretical and experimental data showed good convergence, which indicates the adequacy of the obtained mathematical model of thermal processes in the ozonizer and the possibility of its further use for improving ozonizers in beekeeping.
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