Performance Comparison of Microchannel Heat Sink using Nano-Liquid-Metal-Fluid Coolant

Abstract

Augmentation of heat transfer from compact areas is a growing concern for many researchers for quite a long time. The search for ultimate cooling solutions is one of the key aspects of transforming different micro-electro-mechanical-systems into compact sizes with heavy computing power. Microchannel heat sink is one of the pioneering cooling solutions available that possess the potential to reach the ultimate cooling solution. In this study, emphasis is given on different coolants used in microchannel heat sinks. The study presents detailed heat transfer and fluid flow analysis in a microchannel heat sink with liquid metal based Nano fluid coolants. The heat transfers and fluid flow inside the micro channels is predicted using finite volume method. The numerical model is validated against experimental data available in literature. The findings in this study is also compared with similar studies available in literature. A good agreement is noticed between present study and the available data in literature. In our study, we’ve presented for the first time four different solvent materials to prepare the coolant. These solvent materials are gallium based liquid metals which are widely used throughout the world. We’ve added different Nano particles into these liquid metal solvents to present ‘Nano-Liquid-Metal-Fluid’ that can remove a larger amount of heat flux compared to the Nano fluids prepared with water.