Experimental study of heat transfer enhancement in a helical tube heat exchanger by alumina nanofluid as current flow

Barzegari, Hadi; Tavakoli, Akram; Vahid, Davood Jalali; Bekhradinassab, Ensie

doi:10.1007/s00231-019-02601-5

Cited by 11 publications

(3 citation statements)

References 18 publications

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“…Hadi Barzegari et al (3) experienced that the convective heat transfer coefficient was increasing with the increase in dean number for both distilled water and nanofluid using Wilson method. The higher result is obtained only in the lower volume fraction of nanofluid at 70C.…”

Section: Resultsmentioning

confidence: 99%

“…By measuring the viscosity at 25 C over 24 hour and visual inspection of one week, he found no agglomeration during his inspection. Hadi Barzegari et al (3) discussed that during the preparation of the alumina nanoparticle in distilled water without using surfactant, the stability was good at 120-minute sonication process compared to 30 minutes. Higher particle volume fraction leads to premature sedimentation during continuous experimentation.…”

Section: Stability Rheological and Agglomeration Propertiesmentioning

confidence: 99%

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A Recent Examination on the Performance of Heat Exchangers using Al2O3 Nanofluid with Its Thermo Physical Properties

Armstrong¹,

Sivasubramanian²,

Selvapalam³

2019

IJEAT

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Heat exchangers are the most significant equipment used in the industrial sites for exchanging the useful energy for many applications. It may be used either for cooling or heating but in the industrial scenario, it mostly used for cooling. In the current research development, the nanoparticles of different high thermal conductivity metals have been prepared and introduced in the low thermal performance base fluids like water, oil, ethylene glycol to enhance its quality of heat absorption in the heat exchangers. In that alumina nanoparticle played a significant role in many research applications and it has good thermal conductivity as a pure fluid. So, in this review work, the recent study of Al2O3 nanofluid with its preparation method, thermo-physical properties and its performance in varied heat exchangers have been discussed. This would enrich the knowledge and help the researchers who are interested in alumina nanofluid for their experimental works.

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Section: Resultsmentioning

confidence: 99%

Section: Stability Rheological and Agglomeration Propertiesmentioning

confidence: 99%

A Recent Examination on the Performance of Heat Exchangers using Al2O3 Nanofluid with Its Thermo Physical Properties

Armstrong¹,

Sivasubramanian²,

Selvapalam³

2019

IJEAT

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“…In a shell and tube heat exchanger using an aluminum nanofluid as the working fluid, Barzegari et al 37 looked into the heat conveyance percentage. In this study, the results of the performance of the nanofluid were compared to those of distilled water, and the impact of the alumina concentration in the nanofluid (0.5% by volume) and hot fluid temperatures (70°C–40°C) at various flow rates (−2-3.5 L/min) was also examined.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation and artificial brain structure-based modeling to predict the heat transfer of hybrid Ag/Au nanofluid in a helical tube heat exchanger

Abazari Bahnemiri,

Oloomi,

Mirjalily

et al. 2023

Advances in Mechanical Engineering

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In recent years, due to the low thermal coefficients of common fluids and the increase in size and cost of heat exchangers, technologies for improving heat transfer and reducing dimensions have been developed and widely used in industries such as refrigeration, cooling of processing cells, chemical industries, and more. Previously, increasing heat exchange capacity in heat exchangers was achieved by altering parameters such as boundary conditions, flow geometry, heat exchanger geometry, or changing the type of fluid. Additionally, apart from the use of nanofluids, various other operational methods can be employed to improve the thermal performance of heat exchangers. Accordingly, considering the combination of the aforementioned innovative techniques, this study presents the modeling of flow and heat transfer inside helically coiled tube heat exchangers under the flow of nanofluids containing nickel, gold, silver, and gold/silver hybrid nanoparticles using numerical and artificial intelligence methods. In this study, the effect of variations in the inner diameter of the coiled tube and the volume fraction of nanoparticles was examined. The results showed that increasing the inner diameter and volume fraction of nanoparticles leads to an increase in heat transfer coefficient and Nusselt number, while the friction factor decreases with an increase in Reynolds number and increases with an increase in diameter and volume fraction. Finally, the accuracy and validity of the model were evaluated using statistical parameters and experimental results, which showed a 99.9% level of agreement between the predicted and experimental outcomes.

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Experimental study on hydrothermal characteristics of shell and tube heat exchanger using phase change material-based hybrid nanofluid

Sahoo,

Sarkar

2024

Heat Mass Transfer

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Experimental study of heat transfer enhancement in a helical tube heat exchanger by alumina nanofluid as current flow

Cited by 11 publications

References 18 publications

A Recent Examination on the Performance of Heat Exchangers using Al2O3 Nanofluid with Its Thermo Physical Properties

A Recent Examination on the Performance of Heat Exchangers using Al2O3 Nanofluid with Its Thermo Physical Properties

Numerical investigation and artificial brain structure-based modeling to predict the heat transfer of hybrid Ag/Au nanofluid in a helical tube heat exchanger

Experimental study on hydrothermal characteristics of shell and tube heat exchanger using phase change material-based hybrid nanofluid

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