Experiments and Numerical Investigations for Heat Transfer from a Horizontal Plate via Forced Convection Using Pin Fins with Different Hole Numbers

Abstract

This study focuses on perforated pin fin convection heat transfer. This study's goal is to see if perforated pin fins may help transmit heat. Perforation diameter and hole count are evaluated on each pin. The Nusselt number of perforated pins is 47% higher than solid pins, and it increases with perforation count. Unperforated solid pins have a 19% lower pressure drop. Using pin fins with circular holes as heat sinks, we examined forced convection heat transfer. There were circular perforations. They were conducted in a specifically designed laboratory. At low power, non-perforated fins lose 35 to 31 degrees Celsius, while perforated fins lose only 29.8 degrees (50 W). At 55°C, unperforated fins hit 55°C at full power, while perforated fins hit 38°C (600 W). The model had 16 pin fins and was built of aluminum alloy. When compared to solid pin fins, perforated fins were found to be the best way to improve heat transfer because they were 40% lighter and improved thermal efficiency by 30% to 85% by increasing the Nusselt number and the convective heat transfer coefficient and reducing the pressure gradient.