BibTeX:

@article{IJIRSTV2I12004,
     title={Experimental Investigation of Heat Transfer through Circular Tube using Al2O3/Water-EG Nanofluid},
     author={Bhavinkumar J. Patel and Mr Dattatraya Subhedar},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={2},
     number={12},
     pages={6--10},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV2I12004.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

The aim of this study is to investigate the convective heat transfer of alumina oxide nanofluids inside a horizontal circular tube subject to constant and uniform heat flux at the pipe wall. The alumina oxide nanoparticles of about 20 nm diameter are used in the present study. Three volume fractions of 0.2% 0.4% and 0.6% were tested for alumina oxide/distilled water: ethylene glycol (50:50) nanofluids. Experimental results show that the convective heat transfer coefficient of nanofluid is higher than the base fluid at same inlet condition. The heat transfer coefficient of nanofluid increases with an increase in the volume flow rate and volume concentration of the alumina oxide nanofluid. The Nusselt numbers have substantially higher value then the base fluid and it is increase with an increase of the volume flow rate and the particles concentrations. A significant improvement in the Nusselt number (16.18%) was achieved using the nanofluid compared to the base fluid.

alumina, circular tube, convective heat transfer coefficient, laminar flow, nanofluid, Nusselt number