Design and analysis on effects of different fin perforations on motor

Abstract

In many engineering applications extended surfaces known as fins, are used to enhance convective heat transfer. The problem of natural convection heat transfer for perforated fins was investigated in this work. An experimental study was conducted to investigate the natural convection heat transfer in a rectangular fin plate with no perforations ,square perforations and circular perforations. The investigation is conducted to compare heat transfer rate of different fins (3 fins) with a size of 300x75 mm embedded with different types of perforations. The patterns of perforations on rectangular fins contain of 10 hole. The temperature distribution was examined for rectangular fins. Experimental results shows the temperatures distribution and heat transfer coefficient calculated analytically and also using Ansys Workbench 16.2 and Furthermore, for different perforation , the heat transfer rate and the coefficient of heat transfer also varied giving better results. The work done on various types of fins, effect of perforation shape or geometry on the heat transfer was simulated on motor in ANSYS using actual motor imensions(3D modelled in Autodesk Inventor 2019) to determine best type of fin to be used in motor.The comparison between experimental result and software result between the types of fins perforation was analysed for the heat transfer coefficient to clarify the best perforation shape for the motor.The difference between experimental and numerical results was reported for temperature distributions when the heat supplied are respectively.The overall conclusion shows different perforations analysed and their results are tabulated and also shown in the graphical format.