An Experimental Study on Heat Transfer and Fluid Flow Characteristics of Copper Pin Fin on Changing Heat Sink and Its Orientation

Many of the researchers are trying to improve the effectiveness of fin by changing its material, shape, surface finish and orientation. In this context, an experimental work has been conducted to investigate the effect of pin fin heat sink on the heat transfer performance characteristics under forced flow conditions with two different orientations. In this project, pin fins made up of Copper C106having different dimensions and pattern were used and experimental data pertaining to pin fin heat sink have been collected under fully turbulent condition and results are then plotted for different orientations, comparison with that of plate fin under similar operating conditions were carried out. Our objective was to study the effect of heat transfer with different orientation of fin heat transfer characteristics. Many experiments have been done to get the optimum heat transfer through can be achieved. It was observed that Irrespective of the type of orientation, considerable enhancement in Nusselt Number is registered at all Reynolds number as compared to the fin without perforations and highest Nusselt number 767.41 is registered for vertical orientation at Re = 10751.22 as compared to inverted and heat sink with no fins. It is also observed that vertical orientation of heat sink outperforms other two in terms of heat transfer rates however heat transfer rates from inverted heat sink is registered lower than that of smooth plate. As a result of this experiment it is concluded that as far as Nusselt number enhancement ratio is concerned heat sink with vertical orientation creates high degree of turbulence and outperforms the inverted orientation and smooth plate.