Heat Transfer Analysis in Microchannel Heatsink by Using Different Nanoparticle Concentration of h-BN

Abstract

In this study, performance of microchannel heat sink using nanofluid as coolant was addressed. In the recent years, nanoparticles are used in basic research and technological applications due to their improved physical and thermal properties compared to their bulk counter-parts. Nanofluids are consisted of nanoparticles which ranged from 1 to 100 nm in size, suspended in the base fluid. In this work, h-BN nanofluid was synthesized, with water as their base fluid with different concentrations to improve the thermal efficiency of the cooling fluid. Heat transfer rate was high when nanofluids were used as coolant than the base fluids like water. A microchannel made of copper and nanofluid by mixture of hexagonal boron nitride (h-BN) and water as base fluid were used as a coolant. The h-BN particle volume fraction was in the range of 0.0001 % to 0.001 %.