МАТЕМАТИЧЕСКАЯ МОДЕЛЬ ТЕПЛООБМЕНА В ЗОНЕ ЛОКАЛЬНОГО ОБОГРЕВА С ПОМОЩЬЮ ПЛЁНОЧНЫХ ЭЛЕКТРОНАГРЕВАТЕЛЕЙ НА ОСНОВЕ БИОТЕРМИЧЕСКОЙ МОДЕЛИ ЖИВОТНОГО

Abstract

The article shows the widespread use of film electric heaters today, as a generator of thermal radiation in the heating systems of young animals. As a rule, this heating system is local, that is, the system provides for maintaining comfortable temperature conditions directly in the cage or den of the animal, which contributes to the proper development of its body, especially in the early stages. In this regard, it is important to correctly calculate the parameters of such a system so that the animal is first of all comfortable, and secondly, it is effective in terms of energy costs. The article analyzes several calculation methods, such as the method of markers and cells, the method of finite differences, the run-through method, the advantages and disadvantages of these methods are given. To obtain a mathematical model, a direct run method was chosen in the format «vortex – velocity – current function – temperature», since this method is not affected by the type of boundary conditions that take into account the dependences on the biophysical characteristics of the heated animals and the configuration of the heating zone. The result of the study is the structure and block diagram of a mathematical model for calculating the temperature field, which allows taking into account the heat released by animals, which will allow more accurately calculating the temperature field in the heating zone, the only drawback of which is the inability to take into account the work of ventilation systems and drafts that organize the movement of air in the heating zone.