Abstract
Efficient heat removal with less pressure drop is the focal point of research work in the field of thermal management systems. This research work is aimed to analyze inline square pin fin mini channel heat sink with superhydrophobic coating. The SiO2 aqueous nanofluids with 0.01% and 0.02% volumetric concentration are used as heat transfer fluid. Data is attained at steady-state with a power input of 40 W, 55 W, and 70 W, flow rate of 300-700 ml per minute, and Reynolds number ranging from 400-1230. The test rig is authenticated by matching data of distilled water for a simple pin fin heat sink with the theoretical model of Tullius which matched the data well. Superhydrophobic mini channel heat sink gave a better performance with 25.23%, 21.8%, and 23.38% augmentation in Nusselt number and 33.19%, 30.5%, 31.1% reduction in pressure drop for distilled water, SiO2 (0.01%) and SiO2 (0.02%), respectively, as compared to the conventional pin fin mini channel heat sink. The nutshell of this experimental work is magnification in heat transfer with a reduction in pressure drop.
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