Review on nanofluids characterization, heat transfer characteristics and applications

Raja, M.; Vijayan, Remya; Dineshkumar, P.; Venkatesan, M.

doi:10.1016/j.rser.2016.05.079

Cited by 192 publications

(45 citation statements)

References 121 publications

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“…Nanofluids containing CNTs have been investigated and developed by many researchers and manufacturers and expressed as a great candidate for many potential applications such as heat transfer, thermal dissipation, and solar energy absorption. The critical technical problem with CNT nanofluid is how to uniform disperse CNTs in base fluids like water and ethylene glycol to obtain not only good stability but also high performance [16,17].…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity and Photothermal Conversion Performance of Ethylene Glycol-Based Nanofluids Containing Multiwalled Carbon Nanotubes

Tam

Trinh

Anh

et al. 2018

Journal of Nanomaterials

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In this study, the successful hydroxyl functionalization of carbon nanotubes (MWCNT-OH) was prepared by chemical treatments and characterized by Raman and FTIR spectra. MWCNT-OH was successfully dispersed into ethylene glycol (EG) with the Tween-80 surfactant by an ultrasonication method to prepare nanofluids. Thermal conductivity of nanofluid was investigated, and a maximum thermal conductivity enhancement about 24% at 50°C was obtained with nanofluid containing 0.64 vol.% MWCNT concentration. The photothermal conversion performance of nanofluid was also investigated by measuring the change of the temperature under lighting from a solar simulator. The measurement results showed that the highest photothermal conversion was obtained about 4.2% after a 30 min lighting with nanofluid containing 0.48 vol.% CNT concentration compared to ethylene glycol. These obtained results have propose a potential application of CNTs in nanofluids for solar absorption.

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Section: Introductionmentioning

confidence: 99%

Thermal Conductivity and Photothermal Conversion Performance of Ethylene Glycol-Based Nanofluids Containing Multiwalled Carbon Nanotubes

Tam

Trinh

Anh

et al. 2018

Journal of Nanomaterials

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“…For example, the thermal conductivity of copper at room temperature is about 700 times greater than that of water, and about 3000 times greater than that of engine oil [8,9]. As a result, nanofluids, which are dilute suspensions of nano-size particles, have drawn much attention [10][11][12][13]. For instance, heat transfer of natural convection could be enhanced with a small volume fraction of nanoparticles [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal-Electric Cross Coupling on Heat Transport in Nanofluids

Kang

Wang

2017

Energies

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Nanofluids have an enhanced thermal conductivity compared with their base fluid. Although many mechanisms have been proposed, few of them could give a satisfactory explanation of experimental data. In this study, a mechanism of heat transport enhancement is proposed based on the cross coupling of thermal and electric transports in nanofluids. Nanoparticles are viewed as large molecules which have thermal motion together with the molecules of the base fluid. As the nanoparticles have surface charges, the motion of nanoparticles in the high-temperature region will generate a relatively strong varying electric field through which the motion will be transported to other nanoparticles, leading to a simultaneous temperature rise of low-temperature nanoparticles. The local base fluid will thus be heated up by these nanoparticles through molecular collision. Every nanoparticle could, therefore, be considered as an internal heat source, thereby enhancing the equivalent thermal conductivity significantly. This mechanism qualitatively agrees with many experimental data and is thus of significance in designing and applying nanofluids.

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“…With the advent of nanofluids as a new type of fluids having ameliorated properties for heat transfer, copious researches have focused on the application of these fluids. Therefore, a plethora of experimental (Lomascolo et al 2014;Malekzadeh et al 2016) as well as numerical (Vanaki et al 2015;Sheikholeslami and Ganji 2016;Raja et al 2016) studies have been carried out in order to delve deeply into understanding the behavior of nanofluids. In recent years, Rahmati et al (2016) employed a lattice Boltzmann method to simulate the mixed convection of Cu-water nanofluid in a double lid-driven cavity having sinusoidal temperature distribution.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Forced Convection of Nanofluid Flow in Microchannels: Effect of Adding Micromixer

Ababaei

Arani

Aghaei

2017

JAFM

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In the present study, forced convection of CuO-water nanofluid in a two dimensional parallel plate microchannel with and without micromixers has been investigated numerically. Two horizontal hot baffles were inserted between the adiabatic plates and three vertical baffles, which were attached on the plates, worked as micromixers in order to improve the cooling process. The effect of Reynolds number, Re = 10, 30, 60, 100, and 150 and nanoparticles volume fraction, from 0 to 4%, were examined on flow field and heat transfer. Different geometrical configurations for the arrangement of the hot baffles were tested. A FORTRAN code based on finite volume method was developed to solve the governing equations and SIMPLER algorithm was used for handling the pressure-velocity coupling. Simulations showed that the presence of micromixers and increasing the Reynolds number as well as nanoparticles volume fraction, increase the average Nusselt number. In order to achieve maximum heat transfer, best arrangements for the baffles were reported. It was also observed that the size of recirculation zones, which are created behind the micromixer baffles, increases with increasing Reynolds number and leads to better cooling.

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Review on nanofluids characterization, heat transfer characteristics and applications

Cited by 192 publications

References 121 publications

Thermal Conductivity and Photothermal Conversion Performance of Ethylene Glycol-Based Nanofluids Containing Multiwalled Carbon Nanotubes

Thermal Conductivity and Photothermal Conversion Performance of Ethylene Glycol-Based Nanofluids Containing Multiwalled Carbon Nanotubes

Effect of Thermal-Electric Cross Coupling on Heat Transport in Nanofluids

Numerical Investigation of Forced Convection of Nanofluid Flow in Microchannels: Effect of Adding Micromixer

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