Experimental Study of the Effect of Hybrid Nanofluids Deposition on Microchannels with Different Sections in Pool Boiling

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MOHEBBI M.; KHAYAT M.

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Journal Paper

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Journal: Modares Mechanical Engineering Year:2019 | Volume:19 | Issue:11 Page(s): 2653-2666

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Title

Experimental Study of the Effect of Hybrid Nanofluids Deposition on Microchannels with Different Sections in Pool Boiling

Author(s)

MOHEBBI M. | KHAYAT M. | Issue Writer Certificate

Keywords

Pool BoilingQ1

Hybrid NanofluidsQ1

MicrochannelsQ1

Nano Particle DepositionQ1

Critical Heat FluxQ1

Abstract

This study aims to investigate the effect of nanoparticle deposition on the boiling surface in the presence of microchannel on the characteristics of boiling heat transfer. In this experimental study, the copper boiling surfaces including polished circular surface, rectangular and trapezoidal Microchannels were used. The Microchannels include feeding sub-channels perpendicular to the main channel, which increases the boiling surface and separates the downward cool fluid flow and upward hot bubbles. Nuclear boiling experiments on microchannel surfaces in the presence of a hybrid water-based nanofluid containing 70% titanium oxide and 30% OH-based multi-wall carbon nanotubes in volumetric concentrations of 0. 1% and 0. 5% have been conducted. The results of nanofluid boiling experiments on both microchannel surfaces show that with increasing concentrations, Critical Heat Flux and heat transfer coefficient increases and the highest increase in Critical Heat Flux and heat transfer coefficient is related to the hybrid nanofluid with 0. 5 % volumetric concentration on the surface with trapezoidal microchannel and their values are 64. 64% and 344. 76%, respectively, compared to pure water boiling on the polished copper surface. Also, in boiling of pure water on the deposited surfaces with nanoparticles, the greatest increase in Critical Heat Flux and heat transfer coefficient is related to the surface with trapezoidal Microchannels with 0. 1% volumetric concentration and 0. 5% and volumetric concentration and their values are 120. 16% and 149. 4% respectively, compared to pure water boiling on the polished copper surface.

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APA: Copy

MOHEBBI, M., & KHAYAT, M.. (2019). Experimental Study of the Effect of Hybrid Nanofluids Deposition on Microchannels with Different Sections in Pool Boiling. MODARES MECHANICAL ENGINEERING, 19(11 ), 2653-2666. SID. https://sid.ir/paper/178342/en

Vancouver: Copy

MOHEBBI M., KHAYAT M.. Experimental Study of the Effect of Hybrid Nanofluids Deposition on Microchannels with Different Sections in Pool Boiling. MODARES MECHANICAL ENGINEERING[Internet]. 2019;19(11 ):2653-2666. Available from: https://sid.ir/paper/178342/en

IEEE: Copy

M. MOHEBBI, and M. KHAYAT, “Experimental Study of the Effect of Hybrid Nanofluids Deposition on Microchannels with Different Sections in Pool Boiling,” MODARES MECHANICAL ENGINEERING, vol. 19, no. 11 , pp. 2653–2666, 2019, [Online]. Available: https://sid.ir/paper/178342/en

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