In the present study, the convective heat transfer enhancement of carbon nanotube (CNT)-water nanofluid has been studied experimentally inside an automobile radiator. Heat removal rate of the coolant flowing through the automobile radiators is of great importance for the optimization of fuel consumption. In this study, four different concentrations of nanofluids in the range of 0.15–1 vol. % were prepared with the addition of CNT nanoparticles into water. The CNT nanocoolants are synthesized by functionalization (FCNT) and surface treatment (SCNT) method. The effects of various parameters, namely synthesis method, variation in pH values and nanoparticle concentration on the Nusselt number are examined through the experimental investigation. Results demonstrate that both nanocoolants exhibit enormous change Nusselt number compared with water. The results of functionalized CNT nanocoolant with 5.5 pH exhibits better performance compared to the nanocoolant with pH value of 6.5 and 9. The surface treated CNT nanocoolant exhibits the deterioration in heat transfer performance. In addition, Nusselt number found to increase with the increase in the nanoparticle concentration and nanofluid velocity.

References

References
1.
Choi
,
S., U. S.
,
Singer
,
D. A.
, and
Wang
,
H. P.
,
1995
,
Development and Application of Non-Newtonian Flows
, Vol.
231
,
ASME
,
New York
, pp.
99
105
.
2.
Chougule
,
S. S.
,
Sahu
,
S. K.
, and
Pise
,
A. T.
,
2014
, “
Thermal Performance of Two Phase Thermosyphon Flat-Plate Solar Collectors by Using Nanofluid
,”
ASME J. Sol. Energy
,
136
(
1
), p.
014503
.10.1115/1.4025591
3.
Chougule
,
S. S.
,
Sahu
,
S. K.
, and
Pise
,
A. T.
,
2013
, “
Performance Enhancement of Two Phase Thermosyphon Flat-Plate Solar Collectors by Using Surfactant and Nanofluid
,”
Front. Heat Pipes
,
4
(
1
), pp.
1
6
.10.5098/fhp.v4.1.3002
4.
Kulkarni
,
D. P.
,
Vajjha
,
R. S.
,
Das
,
D. K.
, and
Oliva
,
D.
,
2011
Application of Aluminum Oxide Nanofluids in Diesel Electric Generators Jacket Water Coolant
,”
Appl. Therm. Eng.
,
28
, pp.
1774
1781
.10.1016/j.applthermaleng.2007.11.017
5.
Vajjha
,
R. S.
,
Das
,
D. K.
, and
Namburu
,
P. K.
,
2010
, “
Numerical Study of Fluid Dynamic and Heat Transfer Performance of Al2O3 and CuO Nanofluids in the Flat Tubes of a Radiator
,”
Int. J. Heat Fluid Flow
,
31
(
4
), pp.
613
621
.10.1016/j.ijheatfluidflow.2010.02.016
6.
Peyghambarzadeh
,
S. M.
,
Hashemabadi
,
S. H.
,
Jamnani
,
M. S.
, and
Hoseini
,
S. H.
,
2011
, “
Improving the Cooling Performance of Automobile Radiator With Al2O3/Water Nanofluid
,”
Appl. Therm. Eng.
,
31
(
10
), pp.
1833
1838
.10.1016/j.applthermaleng.2011.02.029
7.
Leong
,
K. Y.
,
Saidur
,
R.
,
Kazi
,
S. N.
, and
Mamun
,
A. H.
,
2010
, “
Performance Investigation of an Automotive Car Radiator Operated With Nanofluid-Based Coolants (Nanofluid as a Coolant in a Radiator
,”
Appl. Therm. Eng.
,
30
(
17–18
), pp.
2685
2692
.10.1016/j.applthermaleng.2010.07.019
8.
Peyghambarzadeh
,
S. M.
,
Hashemabadi
,
S. H.
,
Hoseini
,
S. H.
, and
Jamnani
,
M. S.
,
2011
, “
Experimental Study of Heat Transfer Enhancement Using Water/Ethylene Glycol Based Nanofluids as a New Coolant in the Car Radiator
,”
Int. Commun. Heat Mass Transfer
,
38
(
9
), pp.
1283
1290
.10.1016/j.icheatmasstransfer.2011.07.001
9.
Naraki
,
M.
,
Peyghambarzadeh
,
S. M.
,
Hashemabadi
,
S. H.
, and
Vermahmoudi
,
Y.
,
2013
, “
Parametric Study of Overall Heat Transfer Coefficient of CuO/Water Nanofluids in a Car Radiator
,”
Int. J. Therm. Sciences
,
66
, pp.
82
90
.10.1016/j.ijthermalsci.2012.11.013
10.
Choi
,
S.
,
2006
, “
Nanofluids for Improved Efficiency in Cooling Systems
,” Heavy Vehicle Systems Review, Argonne National Laboratory, Argonne, IL.
11.
Chougule
,
S. S.
, and
Pise
,
A. T.
,
2012
, “
Studies of CNT Nanofluid in Two Phase system
,”
Int. J. Global Technol. Initiatives
,
1
, pp.
F14
F20
.
12.
Ding
,
Y.
,
Alias
,
H.
,
Wen
,
D.
, and
Williams
,
R. A.
,
2006
, “
Heat Transfer of Aqueous Suspensions of Carbon Nanotubes (CNT Nanofluids)
,”
Int. J. Heat Mass Transfer
,
49
(
1–2
), pp.
240
252
.10.1016/j.ijheatmasstransfer.2005.07.009
13.
Garg
,
P.
,
Alvarado
,
J. L.
,
Marsh
,
C.
,
Carlson
,
T. A.
,
Kessler
,
D. A.
, and
Annamalai
,
K.
,
2009
, “
An Experimental Study on the Effect of Ultrasonication on Viscosity and Heat Transfer Performance of Multi-Wall Carbon Nanotube-Based Aqueous Nanofluids
,”
Int. J. Heat Mass Transfer
,
52
(
21–22
), pp.
5090
5101
.10.1016/j.ijheatmasstransfer.2009.04.029
14.
Kolade
,
B.
,
Goodson
,
K. E.
, and
Eaton
,
J. K.
,
2009
, “
Convective Performance of Nanofluids in a Laminar Thermally Developing Tube Flow
,”
ASME J. Heat. Transfer
,
131
(
5
), p.
052402
.10.1115/1.3013831
15.
Amrollahi
,
A.
,
Rashidi
,
A. M.
,
Lotfi
,
R.
,
Emami
,
M. M.
, and
Kashefi
,
K.
,
2010
, “
Convection Heat Transfer of Functionalized MWNT in Aqueous Fluids in Laminar and Turbulent Flow at the Entrance Region
,”
Int. Commun. Heat Mass Transfer
,
37
(
6
), pp.
717
723
.10.1016/j.icheatmasstransfer.2010.03.003
16.
Liu
,
Z. H.
, and
Liao
,
L.
,
2010
, “
Forced Convective Flow and Heat Transfer Characteristics of Aqueous Drag-Reducing Fluid With Carbon Nanotubes Added
,”
Int. J. Therm. Sci.
,
49
(
12
), pp.
2331
2338
.10.1016/j.ijthermalsci.2010.08.001
17.
Fonseca
,
M. A.
,
Freitas
,
S.
,
Lamas
,
B.
,
Abreu
,
B.
,
Calisto
,
H.
,
Martins
,
N.
, and
Oliveira
,
M.
,
2013
, “
Carbon Nanotubes in a Fluidic Medium: Critical Analysis, Physical and Chemical Properties of Carbon Nanotubes
,”
Physical and Chemical Properties of Carbon Nanotubes
,
S.
Suzuki
, ed.,
InTech, Rijeka
,
Croatia
.
18.
Chougule
,
S. S.
, and
Sahu
,
S. K.
,
2014
, “
Comparative Study of Cooling Performance of Automobile Radiator Using Al2O3/Water and CNT/Water Nanofluid
,”
ASME J. Nanotech. Eng. Med.
,
5
(
1
), p.
011001
.10.1115/1.4026971
19.
Chougule
,
S. S.
, and
Sahu
,
S. K.
,
2013
, “
Experimental Investigation of Heat Transfer Augmentation in Automobile Radiator With CNT/Water Nanofluid
,”
4th ASME-International Conference on Micro/Nanoscale Heat & Mass Transfer
(
MNHMT2013
), Hong Kong, China, Dec. 11–14.10.1115/1.4027678
20.
Chougule
,
S. S.
, and
Sahu
,
S. K.
,
2013
, “
Comparison of Augmented Thermal Performance of CNT/Water and Al2O3/Water Nanofluids in Transition Flow Through a Straight Circular Duct Fitted With Helical Screw Tape Inserts
,”
22nd National and 11th ISHMT-ASME Heat and Mass Transfer Conference
, Kharagpur, India, Dec. 28–31.
21.
Chougule
,
S. S.
,
Pise
,
A. T.
, and
Madane
,
P. A.
,
2012
, “
Performance of Nanofluid-Charged Solar Water Heater by Solar Tracking System
,”
IEEE-ICAESM-2012
, Nagapattiam, India, Vol.
6
, pp.
247
254
.
22.
Pise
,
A. T.
, and
Chougule
,
S. S.
,
2011
, “
Experimental Investigation Heat Transfer Augmentation of Solar Heat Pipe Collector by Using Nanofluid
,”
21st National and 10th ISHMT-ASME Heat and Mass Transfer Conference
, Madras, India, Dec. 27–30.
23.
Xie
,
H.
,
Lee
,
H.
,
Youn
,
W.
, and
Choi
,
W.
,
2003
, “
Nanofluids Containing Multiwalled Carbon Nanotubes and Their Enhanced Thermal Conductivities
,”
J. Appl. Phys.
,
94
(
8
), pp.
4967
4971
.10.1063/1.1613374
24.
Coleman
,
H. W.
, and
Steele
,
W. G.
,
1989
,
Experimental and Uncertainty Analysis for Engineers
,
Wiley
,
New York
.
25.
ANSI/ASME,
1985
, “
Measurement Uncertainty
,” Paper No. PTC 19.
26.
Dittus
,
F. W.
, and
Boelter
,
L. M. K.
,
1930
,
Heat Transfer in Automobile Radiators of Tubular Type
,
University of California
,
Berkeley, CA
, pp.
13
18
.
27.
Yousefi
,
T.
,
Shojaeizadeh
,
E.
,
Veysi
,
F.
, and
Zinadini
,
S.
,
2012
, “
An Experimental Investigation on the Effect of pH Variation of MWCNT–H2O Nanofluid on the Efficiency of a Flat-Plate Solar Collector
,”
Sol. Energy
,
86
(
2
), pp.
771
779
.10.1016/j.solener.2011.12.003
28.
Assael
,
M. J.
,
Metaxa
,
I. N.
,
Arvanitidis
,
J.
,
Christofilos
,
D.
, and
Lioutas
,
C.
,
2005
, “
Thermal Conductivity Enhancement in Aqueous Suspensions of Carbon Multi-Walled and Double-Walled Nanotubes in the Presence of Two Different Dispersants
,”
Int. J. Thermophys.
,
26
(
3
), pp.
647
664
.10.1007/s10765-005-5569-3
29.
Murshed
,
S. M. S.
,
Leong
,
K. C.
, and
Yang
,
C.
,
2008
, “
Investigations of Thermal Conductivity and Viscosity of Nanofluids
,”
Int. J. Therm. Sci.
,
47
(
5
), pp.
560
568
.10.1016/j.ijthermalsci.2007.05.004
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