Comparative study of convective heat transfer characteristics of nanofluids
| Autor: | Hina Muryam, Naveed Ramzan, Ali Hassan, Gul Hameed Awan, Asim Umer |
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| Rok vydání: | 2017 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Convective heat transfer 020209 energy Thermodynamics Laminar flow 02 engineering and technology Heat transfer coefficient 021001 nanoscience & nanotechnology Condensed Matter Physics Nusselt number Boundary layer Nanofluid Heat flux Heat transfer 0202 electrical engineering electronic engineering information engineering Composite material 0210 nano-technology |
| Zdroj: | Heat and Mass Transfer. 53:2309-2316 |
| ISSN: | 1432-1181 0947-7411 |
| DOI: | 10.1007/s00231-017-1980-0 |
| Popis: | The present research is about to draw a comparison between heat transfer characteristics of gold/deionized water (DIW) and silver/DIW based nanofluid under same heat flux for laminar flow. Experiments are performed on both nanofluid by using different concentrations (0.015, 0.045, 0.0667%) of nano-particles (NPs) in DIW as a base fluid. The experimental study concludes that an appreciable intensification in heat transfer coefficient (HTC) of both nanofluid has been attained as compare to base fluid. However, gold/DIW based nanofluid exhibit better convective heat transfer intensification compared with silver/DIW based nanofluid but Shah correlation cannot predict as much augmentation as in experimental work for both nanofluid. It is also noticed that the anomalous enhancement in Nusselt number and HTC is not only due to the accession in thermal properties but also by the formation of thinner thermal boundary layer at the entrance of the tube due to NPs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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