Heat transfer enhancement by nanofluid coupling with surfactant in overcoming particle agglomeration for microchannel heat sinks

Mat, M.N.H. and Saidur, R. (2022) Heat transfer enhancement by nanofluid coupling with surfactant in overcoming particle agglomeration for microchannel heat sinks. Microfluidics and Nanofluidics, 26 (9). ISSN 1613-4982

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Abstract

The characteristic effect of nanoparticles, boron nitride nanotubes in the nanofluid with and without surfactant, were investigated using numerical CFD. A simplified microchannel heat sink model was created and discretized for numerical analysis. The numerical prediction was validated with previous experiment data for promising numerical agreement. Then, the effect of different Triton X-100 surfactant volume fractions and nanotube mass fractions in the base fluid were carried out on thermal and hydraulic performance. The significant finding revealed that the thermal resistance was reduced by as much as 90% compared to pure water with a surfactant concentration of 0.35 vol.% and adding 0.02 wt.% at the Reynold number (Re) of 400. However, the Nusselt number (Nu) increased twice from the pure water with an additional surfactant of 0.35 vol.% after the Re of 400. Despite improving the thermal performance, the pressure drop seems to be a drawback for the nanotube with surfactant implementation. The present study resulted in a greater comprehension of the nanofluid flow with surfactant effect in the nanofluid in the microchannel heat sink, allowing for better design decisions to be made for the improvement of this application for various purposes. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type:
Journal Article
Journal or Publication Title:
Microfluidics and Nanofluidics
Additional Information:
The final publication is available at Springer via http://dx.doi.org/10.1007/s10404-022-02570-y
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
174791
Deposited By:
Deposited On:
19 Aug 2022 12:45
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Aug 2022 12:45