Experimental Study on Forced Convective Heat Transfer Enhancement Using Water-based ZnO Nanofluid
| International Journal of Mechanical Engineering |
| © 2022 by SSRG - IJME Journal |
| Volume 9 Issue 2 |
| Year of Publication : 2022 |
| Authors : V. Harinath, K. Srinivasa Reddy, K. Vijaya Kumar Reddy |
10.14445/23488360/IJME-V9I2P103
How to Cite?
V. Harinath, K. Srinivasa Reddy, K. Vijaya Kumar Reddy, "Experimental Study on Forced Convective Heat Transfer Enhancement Using Water-based ZnO Nanofluid," SSRG International Journal of Mechanical Engineering, vol. 9, no. 2, pp. 19-24, 2022. Crossref, https://doi.org/10.14445/23488360/IJME-V9I2P103
Abstract:
The development of energy-efficient heat transfer fluids, which are required in many industrial applications, is hampered by low thermal conductivity. In this paper, metal oxide nanoparticles are suspended in traditional heat transfer fluids to create a novel new class of heat transfer fluids, and their effectiveness in enhancing heat transfer rate is presented. When compared to currently employed heat transfer fluids, the resulting nanofluids are projected to have superior heat transfer performance and offer the best hope for improving heat transmission. An experimental examination of the forced convective heat transfer characteristics of a nanofluid containing water and zinc oxide nanoparticles is presented in this paper. Experiments are carried out to see how the volume fraction of nanoparticles and the pH of the solution affect the outcome. The experiment is carried out in a parallel and counterflow flow heat exchanger with the cold fluid. Two types of fluid are prepared: The first type of fluid is Zinc Oxide nanoparticles dispersed in water, and the second type is Zinc Oxide nanoparticles distributed in KOH water solution. The overall heat transfer coefficient variation with increasing cold water flow rate is investigated and compared to the results obtained with increasing nanofluid flow rate. A similar study and comparison of results are done for the variation of Nusselt number with respect to Reynold’s number. A significant improvement in heat transfer coefficient is observed with ZnO in water as cold fluid (nanofluid).
Keywords:
Concentric Pipe Heat Exchanger, Dispersion, Overall heat transfer coefficient, Nanofluid, Nusselt number, Reynolds Number.
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