Numerical investigation of nano-fluid flow on micro channel heat sink efficiency using the Taguchi method

Authors

1 Mechanical Faculty Member

2 Member of Faculty of Mechanical Engineering , Isalmic Azad University, Sari Branch

Abstract

In this article we have studied a micro-channel heat sink with different kinds of nanofluid flow using water and ethylene-glycol as base fluids. The heat sink discussed contains a number of parallel micro channels which are placed on a thermal source (exp. computer CPU) for controlling its temperature. The flows in micro-channels are considered, incompressible, steady state and homogenous. A Finite volume three dimensional numerical scheme is used to solve the governing differential equations. The channel is made aluminum or copper and aluminum oxide, copper, titanium oxide, mercury and gold used as nanoparticles inside the base fluid, water and ethylene-glycol. Taguchi statistical method is used for to investigate all the cases. Studies show that different combinations of nanoparticles create a 10 times higher pressure lost with ethylene-glycol as the base fluid rather than water. The heat source’s temperature correspondingly leads for over 10℃ the ethylene-glycol version. Therefore it doesn’t seem sufficient to use ethylene glycol as the base fluid for nano particles. Other findings from this research is that water with 5.0% titanium-dioxide with the copper channels has the best thermal efficiency, but water with 8% aluminum-oxide with the copper channels has the best minimum temperature of heat source.

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References

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Journal of Solid and Fluid Mechanics
Volume 7, Issue 1
March and April 2017
Pages 275-287

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