An\'alise t\'ermica\-fluidodin\^amica de um transformador de energia a seco atrav\'es da din\^amica dos fluidos computacional

TL;DR

This paper uses computational fluid dynamics to analyze and optimize the thermal-fluid behavior of a dry-type power transformer with exhaust fans and heat exchangers, aiming to improve cooling efficiency.

Contribution

It presents a CFD-based methodology to evaluate and optimize the thermal and fluid dynamics of a dry-type transformer design, focusing on configuration and flow parameters.

Findings

Identified optimal fan and heat exchanger placement for effective cooling

Demonstrated CFD as a valuable tool for transformer thermal analysis

Provided insights into flow patterns and heat transfer within the transformer

Abstract

The cooling system is a key factor in power transformer designs. The frequent need for optimized projects further increases the importance of development through of increasingly developed tools. This work aims to evaluate a transformer design, in which the refrigeration is performed through of exhaust fans and heat exchangers installed on the lower side of the transformer. The model is elaborated applying a symmetry, reducing the model to be analyzed. In order to evaluate the best configuration in terms of positioning, flow rate and quantity of understand the main thermal and fluid dynamics characteristics of the flow inside the transformer, the Computational Fluid Dynamics tool is used. The methodology employed is to solve the numerically, through the ANSYS CFX computational package, the flow and energy equations inside the transformer tank.