Experimental Investigation of Heat Sinks with and Without Perforation—Addressing Toward Higher Cooling Rates and Optimum Material

This paper reports an attempt made to investigate the effect of fins with and without perforation on the convection coefficient (h) for cooling purpose. Experiments were conducted considering two specimens with six fins, one with solid fins and the other with perforations (of 8 and 10 mm diameters) on fins. The convection coefficient in terms of Nusselt number and Rayleigh number was also studied and compared with available literature work. It was found that experiments with perforated fins increased the convection coefficient up to 36%.