Predicting Hottest Spot Temperature in Self-Cooled Dry-Type Transformer

In this study, the temperature distribution of a dry-type transformer was determined numerically. Each leg of the transformer that consists of the upper and the lower windings and the core. The solution was carried out for the temperature dependent property fluid. The solution of thermal-fluid equations includes natural convection. The velocity field and the temperature distribution of the windings and the core are obtained by the FEM-based pocket program ANSYS. The level and the location of the hot spot temperature were determined. The agreement between solution obtained and experimental results presented in literature was found to be very good. I