Heat and Flow Profile of Nanofluid Flow Inside Multilayer Microchannel Heat Sink

Abstract

The purpose of this study is to investigate the heat and flow profile of nanofluid flow inside multilayer microchannel heat sink. Two different cooling fluid; water and water-based Aluminum Oxide is compared. The heated surface of the heat sink is set as constant heat flux of 200W/cm² and mass flow rate is varied as 20, 40, 60 and 80kg/hr. From the results, it shows that the use of Al₂O₃ nanofluid is better in terms of heat transfer compared to water because the percentage of increment of Nusselt number is higher (83%) compared to the percentage of increment of friction factor (23.5%). Therefore, Al₂O₃ nanofluid is better in terms of heat transfer compared to water but the pressure drop is still a drawback as it is higher compared to water.