Abstract
Purpose: The purpose of the chapter it to develop and implement a mathematical model for examining a three-dimensional temperature field in a three-phase transformer-type heating element with a spatial magnetic system, to obtain recommendations for improving the design and checking the thermal state for such devices.
Methodology: For modeling, the finite element method has been used to provide a more accurate map of the temperature field and reveal local overheating zones in an electrotechnical device with complex paths of heat fluxes. In the proposed model, the heat transfer coefficient is specified individually for each boundary element by means of an iterative process. The model has been implemented in the Delphi programming environment, and visualization of the simulation results has been carried out using the MatLab software package.
Results: The analysis of the simulation results has been performed, the local overheating zones have been identified and the ways of improving the design of the 25 kW heating element has been proposed. The dependency of the maximum insulation temperature of the primary winding on the heat flux density from the surface adjacent to the tubes of the secondary winding has been obtained. It is convenient to estimate the thermal state of a transformer-type heating element by this dependency in engineering calculations for such devices.
Conclusions/value: The proposed method of modeling thermal processes allows to identify zones of local overheating more accurately, to determine the values of maximum temperatures in these zones, and to give recommendations on the choice of electromagnetic loads, improvement the design and engineer new heating elements.
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Serikov, A.V. (2021). Thermal Simulation in Transformer Type Heating Devices. In: Shakirova, O.G., Bashkov, O.V., Khusainov, A.A. (eds) Current Problems and Ways of Industry Development: Equipment and Technologies. Lecture Notes in Networks and Systems, vol 200. Springer, Cham. https://doi.org/10.1007/978-3-030-69421-0_62
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DOI: https://doi.org/10.1007/978-3-030-69421-0_62
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