Extrapolation of Al2O3–water nanofluid viscosity for temperatures and volume concentrations beyond the range of validity of existing correlations

Mena, Jesús Betancourt; Moraes, Anderson Antonio Ubices de; Benito, Yipsy Roque; Ribatski, Gherhardt; Parise, J. A. R.

doi:10.1016/j.applthermaleng.2012.11.002

Cited by 33 publications

(17 citation statements)

References 7 publications

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“…Later, Sundar et al [38] were showed the maximum viscosity ratio of 2.96 times higher than water at 2.0% volume concentration of the Fe3O4-water nanofluids. Table 3 shows the summary of viscosity for different nanofluids from other researchers [70][71][72][73][74][75][76][77]. The table presents the viscosity increment of nanofluids for different based fluids, volume concentrations, particle sizes and temperatures undertaken by various scholars.…”

Section: Dynamic Viscosity Of Nanofluidsmentioning

confidence: 99%

Heat Transfer Augmentation in Heat Exchanger by using Nanofluids and Vibration Excitation - A Review

Razak¹,

Sani²,

Azmi³

2020

IJAME

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Nanofluids are used in heat exchanger system as efficient heat transfer fluids to improve heat transfer performance by passive method. Besides, another special active technique by implementing the low or high frequency vibration, which was used in heat exchanger to enhance the heat transfer performance. This paper reviews the heat transfer augmentation in heat exchanger by using nanofluids, vibration excitation of low and high frequency vibration. The use of nanofluids in heat exchanger system can provide better effective thermal conductivity compared to the conventional coolants. The presence of nanosize particles in nanofluids performed better mixing flow with higher thermal properties compared to pure fluids. Additionally, the active method by inducing low and high frequency vibration technology was applied in heat exchanger system. The heat transfer augmentation by vibration excitation was resulted from the mitigation of the fouling resistance on the surface of the tube wall. It was found that vibration excitation not only increase the heat transfer rate, but also might be a solution for fouling reduction. Hence, there is a great potential of using nanofluids together with vibration excitation simultaneously in heat exchanger system to improve the heat transfer performance.

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Section: Dynamic Viscosity Of Nanofluidsmentioning

confidence: 99%

Heat Transfer Augmentation in Heat Exchanger by using Nanofluids and Vibration Excitation - A Review

Razak¹,

Sani²,

Azmi³

2020

IJAME

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“…Experimental evidences on nanofluid viscosity (µ nf ) have shown a strong dependence on the physical and chemical properties of the suspension, such as nanoparticle size and shape [130][63, 163,[205][206][207], solid phase volume concentration [163,[208][209][210], pH of the solution [136,211], surfactant concentration [78,[212][213][214][215] and temperature of the suspension [198,216].…”

Section: Experimental Evidencesmentioning

confidence: 99%

A review on the heat and mass transfer phenomena in nanofluid coolants with special focus on automotive applications

Bigdeli

Fasano

Cardellini

et al. 2016

Renewable and Sustainable Energy Reviews

117

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Engineered suspensions of nanosized particles (nanofluids) may be characterized by enhanced thermal properties. Due to the increasing need for ultrahigh performance cooling systems, nanofluids have been recently investigated as next-generation coolants for car radiators. However, the multiscale nature of nanofluids implies nontrivial relations between their design characteristics and the resulting thermo-physical properties, which are far from being fully understood. In this work, the role of fundamental heat and mass transfer mechanisms governing thermo-physical properties of nanofluids is reviewed, both from experimental and theoretical point of view. Particular focus is devoted to highlight the advantages of using nanofluids as coolants for automotive heat exchangers, and a number of design guidelines is reported for balancing thermal conductivity and viscosity enhancement in nanofluids. We hope this review may help further the translation of nanofluid technology from small-scale research laboratories to industrial application in the automotive sector.

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“…They observed that the viscosity of nanofluid is augmented with volume fraction for Al 2 O 3 and TiO 2 nanofluid. Jesús et al [36] urged the need of intense experimentation to find out the thermophysical properties of nanofluids such as viscosity, density, thermal conductivity and specific heat capacity, which affect the heat transfer since contradictory results were obtained by several researchers for the dependence of the nanofluid viscosity on temperature, nanoparticle diameter and nanoparticle volume concentration.…”

Section: Few Other Studiesmentioning

confidence: 98%

Review on nanofluids characterization, heat transfer characteristics and applications

Raja¹,

Vijayan²,

Dineshkumar³

et al. 2016

Renewable and Sustainable Energy Reviews

192

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Extrapolation of Al2O3–water nanofluid viscosity for temperatures and volume concentrations beyond the range of validity of existing correlations

Cited by 33 publications

References 7 publications

Heat Transfer Augmentation in Heat Exchanger by using Nanofluids and Vibration Excitation - A Review

Heat Transfer Augmentation in Heat Exchanger by using Nanofluids and Vibration Excitation - A Review

A review on the heat and mass transfer phenomena in nanofluid coolants with special focus on automotive applications

Review on nanofluids characterization, heat transfer characteristics and applications

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