Hydrodynamic Performance of Graphene Oxide nanofluid in heat spreader integrated microchannel

Abstract

Thermal design consideration is highly essential for managing advanced microprocessors which are subjected to conjugate heat transfer under high heat flux with a minimal area for cooling. These multicore processors develop a localized high density heat flux referred as hotspot. It is often reported that the flow hydrodynamics in the channels thrive the hotspot zones in the microchannel heat sink (MHS) that effectively reduces the cooling performance in advanced 3D processors with varying power map cores. In this present study an experimental setup was developed to investigate the flow hydrodynamic and conjugate heat transfer performance of rectangular microchannel by using a thin heat spreader. Graphene Oxide nanofluid is used as the working fluid with three volume fractions (0.02%, 0.07% and 0.12%) for increased Reynolds number range from 150 to 260. Figure of Merit on thermal performance of nanofluid based on different influential factors has been investigated and the best suited nanofluid under various circumstances was found to be 0.12%-Graphene Oxide. © 2019, Toronto Metropolitan University. All rights reserved.