Industrial and Engineering Chemistry Research, ( ISI ), Volume (52), No (36), Year (2013-8) , Pages (13183-13191)

Title : ( Multiwalled Carbon Nanotube/Water nanofluid or helical coilingtechnique, which of them is more effective? )

Authors: Mostafa Kahani , Saeed Zeinali Heris , Seyed Mahmoud Mousavi ,

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A set of experiments wereperformed to investigate the effect of two different techniques of heat transfer enhancement: nanofluidics and helical coiling. The convectionheat transfer behavior of multi-walled carbon nanotube (MWCNT)/water nanofluids through helical coiled tubes with different geometries was reported. 0.1, 0.3 and 0.5% particle weight concentration of MWCNT in distilled water were prepared using two-step method and the effects of a wide range of different parameters such as Reynolds and Helical numbers, geometrical parameters of the coils and nanofluid weight fractions were studied. It was observed that by increasing the Reynolds number or weight concentration of nanofluid, the Nusselt number increases considerably. The maximum thermal performance factor at 4.24 was achieved in this study. Also, the helical coiling technique showed better performance than nanofluidics in these experiments. In addition, the empirical correlations were developed for Nusselt number and pressure drop in terms of Helical number, Prandtl number and weight concentration fit to the experimental data within +25% and -20%.

Keywords

MWCNT/water nanofluids; helical coiling; heat transfer enhancement
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@article{paperid:1035702,
author = {Kahani, Mostafa and Zeinali Heris, Saeed and Mousavi, Seyed Mahmoud},
title = {Multiwalled Carbon Nanotube/Water nanofluid or helical coilingtechnique, which of them is more effective?},
journal = {Industrial and Engineering Chemistry Research},
year = {2013},
volume = {52},
number = {36},
month = {August},
issn = {0888-5885},
pages = {13183--13191},
numpages = {8},
keywords = {MWCNT/water nanofluids; helical coiling; heat transfer enhancement techniques},
}

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%0 Journal Article
%T Multiwalled Carbon Nanotube/Water nanofluid or helical coilingtechnique, which of them is more effective?
%A Kahani, Mostafa
%A Zeinali Heris, Saeed
%A Mousavi, Seyed Mahmoud
%J Industrial and Engineering Chemistry Research
%@ 0888-5885
%D 2013

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