Energy Conversion and Management, ( ISI ), Volume (105), No (7), Year (2015-6) , Pages (355-365)

Title : ( Laminar convective heat transfer of hexylamine-treated MWCNTs-based turbine oil nanofluid )

Authors: Ahmad amiri , Mehdi Shanbedi , Hooman Yarmand , Hamed khajeh Arzani , Samira Gharehkhani , Elham Montazer , Rad sadri , Wail sarsam , B.T.Chew , S.N.Kazi ,
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Multi-walled carbon nanotubes (MWCNTs) were functionalized by hexylamine (HA) in a promising, cost-effective, rapid and microwave-assisted approach. In order to decrease defects and remove acid-treatment stage, functionalization of MWCNTs with HA was carried out in the presence of diazonium reaction. Surface functionality groups and morphology of chemically-functionalized MWCNTS were characterized by FTIR, Raman spectroscopy, thermogravimetric analysis (DTG), and transmission electron microscopy (TEM). To reach a promising dispersibility in oil media, MWCNTs were functionalized with HA. While the cylindrical structures of MWCNTs were remained reasonably intact, characterization results consistently confirmed the sidewall-functionalization of MWCNTs with HA functionalities. Then, HA-treated MWCNTs-based turbine oil nanofluids (HA-MWCNTs/TO) with different volume fractions were synthesized and employed to be investigated in terms of heat transfer potential. Convective heat transfer coefficient of HA-MWCNTs/TO as a positive parameter and pressure drop as a negative factor were investigated for various volume fractions. While results suggested a weak increase in the pressure drop by MWCNTs loading into the TO, lack of acidic agents, the performance index higher than 1 and a significant increase in the convective heat transfer open a new gateway for introducing this economical product for industrial applications in turbines and can be a capable alternative for conventional TO.

Keywords

, Carbon nanotubes, Microwave, Functionalization, Hexylamine, Heat transfer and turbine
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@article{paperid:1057151,
author = {Ahmad Amiri and Shanbedi, Mehdi and Hooman Yarmand and Hamed Khajeh Arzani and Samira Gharehkhani and Elham Montazer and Rad Sadri and Wail Sarsam and B.T.Chew and S.N.Kazi},
title = {Laminar convective heat transfer of hexylamine-treated MWCNTs-based turbine oil nanofluid},
journal = {Energy Conversion and Management},
year = {2015},
volume = {105},
number = {7},
month = {June},
issn = {0196-8904},
pages = {355--365},
numpages = {10},
keywords = {Carbon nanotubes; Microwave; Functionalization; Hexylamine; Heat transfer and turbine oil},
}

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%0 Journal Article
%T Laminar convective heat transfer of hexylamine-treated MWCNTs-based turbine oil nanofluid
%A Ahmad Amiri
%A Shanbedi, Mehdi
%A Hooman Yarmand
%A Hamed Khajeh Arzani
%A Samira Gharehkhani
%A Elham Montazer
%A Rad Sadri
%A Wail Sarsam
%A B.T.Chew
%A S.N.Kazi
%J Energy Conversion and Management
%@ 0196-8904
%D 2015

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