Experimental investigation on the viscosity of Water-CNT and Antifreeze-CNT nanofluids

Dalkılıç, Ahmet Selim; Kucukyildirim, Bedri Onur; Eker, Ayşegül Akdoğan; Çebi, Alican; Tapan, S.; Jumpholkul, Chaiwat; Wongwises, Somchai

doi:10.1016/j.icheatmasstransfer.2016.11.011

Cited by 50 publications

(11 citation statements)

References 42 publications

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“…To date, a number of nanofluids have been reported in literature i.e. CNTs such as water and antifreeze containing CNTs nanoparticles [30], S-SWNTs-water, L-SWNTs-water, [31,32], silver decorated CNTs-water [33], copper oxide surface modified CNTs-water nanoparticles [34], graphene based MWCNTs-ethylene glycol [35], hexylamine coolant modified MWCNTs-transformer oil [36], functionalized MWCNTs-ionic liquids [37], MWCNTs-imidazolium based ionic liquids [38], CNTs-deionized water [39], Fe3O4-MWCNTs-distilled water [40], CNTs-poly-alpha-olefin (PAO) [41], Cu-CNTs-deionized water and Au-CNTs-deionized water [42], Cu-MWCNTs-ethylene glycol-water [24], Al2O3-MWCNTswater [43], MWCNTs-Turbine Oil [44], MWCNTs-Engine Oil [45], MWCNTs-Mineral Oil [46], MWCNTs-Silicon Oil [47], CuO-EG-distilled water [48], Ag-SiC-water [49], and hybrid nanofluids [50].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on synthesis, characterization, stability, thermo-physical properties and rheological behavior of MWCNTs-kapok seed oil based nanofluid

Hameed

Ahmad

Shafiq

et al. 2019

Journal of Molecular Liquids

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Several researchers devoted their efforts for the thermal conductivity enhancement of Carbon Nanotubes (CNTs) based nanofluids as CNTs have excellent thermal properties. However, limited research is reported on the detailed thermo-physical properties of CNTs and oil based nanofluids. In this work, the one-step method synthesis of a new MWCNTs-Kapok seed oil based nanofluid at constant nanoparticle concentration (0.1 wt./wt.) is reported. The nanofluid is characterized by FESEM, FTIR, visual stability analysis and thermophysical properties are experimentally measured. The viscosity found in the range of (0.049-10.101 Pa•s), the thermal conductivity of (0.165-0.207W/m•K) and enhancement of thermal conductivity (6.1538%) were observed. Moreover, the viscosity decreases, and thermal conductivity increases with an increase in temperature. The experimentally obtained data are found in agreement with existing models and modified correlations. The rheological behavior showed that nanofluid is non-Newtonian in nature and exhibiting shear thinning or pseudo plastic behavior.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on synthesis, characterization, stability, thermo-physical properties and rheological behavior of MWCNTs-kapok seed oil based nanofluid

Hameed

Ahmad

Shafiq

et al. 2019

Journal of Molecular Liquids

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“…Experimental values and estimates of nanofluid viscosity have been studied by many researchers. [30][31][32][33] Yiamsawas et al 30 made experimental investigations on the viscosity of TiO 2 and Al 2 O 3 nanoparticles suspended in a mixture of ethylene glycol/water, and they compared the experimental results with the most well-known theoretical models. The results indicated that the theoretical models were not suitable to predict the viscosity of nanofluids.…”

Section: Introductionmentioning

confidence: 99%

“…The results indicated that SWCNTs/EG nanofluids behaved as Newtonian fluids at the solid volume fraction of 0.1% and the dynamic viscosity increases with increasing solid volume fractions and decreases with increasing temperatures. Dalkilic et al measured experimentally the dynamic viscosity of the water‐carbon nanotube and the water‐antifreeze‐carbon nanotube and made a comparison study with the measured results and many empirical correlations. The results showed that the empirical correlation of Kitano et al had the best predictability.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of hydrodynamic and heat transfer performances of nanofluids in a fractal microchannel heat sink

Yan

2019

Heat Trans. Asian Res.

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Heat transfer and hydrodynamic performances for nanofluids, Al2O3‐water and SiO2‐water, are numerically investigated with different nanoparticles’ volume fractions and the initial velocities in a fractal microchannel heat sink. The fractal microchannel is 100 μm × 100 μm in the inlet cross‐section, and the length at the 0th level is 2000 μm. A constant heat flux of 500 kW/m2 was applied to the bottom wall of the fractal microchannel heat sink. The heat transfer and hydrodynamic performances of different cases are discussed in terms of the mean heat transfer coefficient, mean base temperature, pressure loss, thermal resistance, friction factor f/f0, and COP/COP0. Results indicate that increasing the initial velocity and nanoparticles’ volume fraction lead to an enhanced heat transfer at the expense of pressure loss. Al2O3‐water has a higher mean heat transfer coefficient and pressure drop than that of SiO2‐water, a lower f/f0, mean base temperature, thermal resistance, and COP/COP0. Ultimately, as compared to pure water, the heat transfer coefficients of 4% Al2O3‐water increased by 7.53%, 7.80%, 8.00%, 8.14%, 8.16%, and 8.30%, and the pressure drops increased by 32.09%, 31.41%, 30.81%, 30.05%, 29.21%, and 28.58%, respectively, corresponding to the initial velocities by 4, 5, 6, 7, 8 and 9 m/s.

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“…The viscosity of nanofluids is relative to temperature, [2][3][4][5][6][7][8][9][10][11][12][13][14] particle concentration, [2][3][4][5][6][7][8][9][10][11][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] particle shape and size, [2][3][4]12,13,15,16,[30][31][32][33][34][35][36] particle density 37…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the study on the viscosity of nanofluids in model 3,[5][6][7][8][9][20][21][22][40][41][42][43][44][45][46] and shear thinning 10,11,23,[45][46][47][48][49] is relatively comprehensive, but the data on the influence of different hydrophilicity of nanoparticles on the viscosity of nanofluids are still not enough. So, this article adopts nano-titanium dioxide (nano-TiO 2 ) with different hydrophilicity and deionized water (DIW) to create different nanofluids, and rotational viscometer is used to measure the viscosity, thus to research the influence of hydrophilicity of nanoparticles on the viscosity of nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Effect of different surface modified nanoparticles on viscosity of nanofluids

Zhang

Han

2018

Advances in Mechanical Engineering

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Resistance to fluid flow creates various problems, and fluid viscosity reduction can effectively control these problems. Hydrophilic TiO 2-water and hydrophilic-lipophilic TiO 2-water nanofluids were prepared by stirring and ultrasonic mixing; the rotational viscometer was used to measure the viscosity of nanofluids that formed by different surface modifications of nano-titanium dioxide and deionized water. The results show that the viscosity of TiO 2-water nanofluid increases with the decrease in the temperature and increase in the mass fraction of nanoparticles, the hydrophilic TiO 2water nanofluids has a slightly larger viscosity than the hydrophilic-lipophilic TiO 2-water nanofluids, and the higher the mass fraction of the nanoparticles is, the greater the difference is.

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Experimental investigation on the viscosity of Water-CNT and Antifreeze-CNT nanofluids

Cited by 50 publications

References 42 publications

Experimental investigation on synthesis, characterization, stability, thermo-physical properties and rheological behavior of MWCNTs-kapok seed oil based nanofluid

Experimental investigation on synthesis, characterization, stability, thermo-physical properties and rheological behavior of MWCNTs-kapok seed oil based nanofluid

Numerical investigation of hydrodynamic and heat transfer performances of nanofluids in a fractal microchannel heat sink

Effect of different surface modified nanoparticles on viscosity of nanofluids

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