An implementation study on a heat sink with different fin configurations under natural convective conditions

Abstract

This study was conducted as a result of the urgent need to enhance heat sink heat dissipation function emitted by electrical appliances. The effect of new proposed tile fin geometries on its thermal performance in a heat sink under natural convection conditions was investigated. Three different aluminum fin configurations were used at four selected voltage values (37.5, 50, 62.5, and 75 V) and their effect on the studied fin's performance. The studied heat sink consists of six symmetrical fins. The first fin set type was flat (fin 1), the second one with a rectangular edge (fin 2), and the last one with circular perforations with a rectangular fin edge (fin3). The results were validated with a theoretical correlation which showed a good agreement with acceptable percent error deviation. The experimental results showed that the finned heat sink reached the steady-state conditions faster with less temperature compared to the un-finned heat sink. The average effectiveness of the studied fins is 2.9, 3.1, and 3.3 for fins 1, 2, and 3 respectively. The studied fin (3) dissipated heat 6.8% and 12.9% more than fin 2 and 1 respectively. The efficiency of all proposed fins geometries was above 90%.