期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 149, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2019.119124
关键词
Carbon nanoparticles; Acetone; Viscous forces; Brownian motion; Microchannel
资金
- NSFC [51979261]
- University-industry cooperation program of Department of Science and Technology of Fujian Province [2019H6018]
- Australia ARC DECRA [DE190100931]
- Deanship of Scientific Research at King Saud University [RG-1439-70]
In this article, we experimentally measured the convective heat transfer of a micro-channel heat sink cooling with carbon-acetone nanofluid (NF), which potentially is a cost-effective nano-suspension with plausible heat transfer characteristics. The heat transfer and fluid flow characteristics including heat transfer coefficient (HTC), friction factor (FF), pressure drop value (PD), and the thermo-hydraulic performance (THP) was quantified. The structure and morphology of the nanoparticles (NPs) were characterised. It was found that carbon-acetone NF can enhance the HTC value by similar to 73%. Also, a small increase in the FF and PD values were reported due to the augmentation of particle-fluid friction forces and viscosity. The value of PD was augmented by 18.3% at Re similar to 1400 at wt.% = 0.1. The THP value was increased by 69% despite an increase in the PD of the system. It was identified that the promotion of heat transfer was due to the micro-scale phenomena such as Brownian motion and thermophoresis. Also, reduction in the thermal boundary layer inside the micro-channel further contributed to the promotion of heat transfer within the micro-channel. (C) 2019 Elsevier Ltd. All rights reserved.
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