Comparative study of convective heat transfer characteristics of nanofluids

被引：0
|
作者：
Hina Muryam
Naveed Ramzan
Asim Umer
Gul Hameed Awan
Ali Hassan
机构：
[1] Muhammad Nawaz Sharif University of Engineering and Technology,Department of Chemical Engineering
[2] University of Engineering and Technology,Department of Chemical Engineering
[3] University of Engineering and Technology,Department of Metallurgy and Materials Engineering
来源：
Heat and Mass Transfer | 2017年 / 53卷
关键词：
Heat Transfer; Heat Transfer Coefficient; Nusselt Number; Base Fluid; Thermal Boundary Layer;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：2309 / 2316
页数：7
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