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Effects of surfactant and nanofluid on the performance and optimization of a microchannel heat sink

Shamsuddin, H. S. and Estellé, P. and Navas, J. and Mohd. Ghazali, N. and Mohamad, M. (2021) Effects of surfactant and nanofluid on the performance and optimization of a microchannel heat sink. International Journal of Heat and Mass Transfer, 175 . ISSN 0017-9310

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Official URL: http://dx.doi.org/10.1016/j.ijheatmasstransfer.202...

Abstract

This paper reports the influence of surfactant Triton X-100 on boron nitride nanotubes (BNNTs) nanofluid in non-optimized and optimized microchannel heat sink (MCHS) at 30 °C and 50 °C. The MCHS performance was evaluated in terms of thermal resistance and pressure drop, utilizing experimental thermophysical properties of distilled water, a mixture of distilled water and surfactant Triton X-100 as base fluid, and nanofluid BNNTs at weight concentration of 0.001% into MCHS models which was further optimized with the Multiple Objective Particle Swarm Optimization (MOPSO) technique. It is found that the surfactant at 30 °C improves the MCHS thermal capabilities without nanotubes by 0.8% even after optimizing the MCHS according to the fluid properties. Conversely, surfactant Triton X-100 reduces pressure drop greatly with any change in thermal resistance at 50 °C and paired cooperatively with BNNTs nanofluid 0.001wt.% - mitigating pressure drop increment caused by the nanofluid resulting an overall performance improvement by 1.25% and 1.97% for thermal resistance and pressure drop respectively in MCHS systems and reduced to 1.3% and 3.2% after optimization. Optimized MCHS dimensions given by MOPSO could be manufactured and additionally gave wider solutions for large reduction of pressure drop up to 80% for economic MCHS with a drawback of higher thermal resistance.

Item Type:Article
Uncontrolled Keywords:boron nitride nanotubes, heat sink, microchannel
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:94772
Deposited By: Narimah Nawil
Deposited On:29 Apr 2022 21:54
Last Modified:29 Apr 2022 21:54

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