Experimental and numerical study of thermo-hydraulic performance of circumferentially ribbed tube with Al2O3 nanofluid

Khdher, Abdolbaqi Mohammed; Sidik, Nor Azwadi Che; Mamat, Rizalman; Azmi, W.H.

doi:10.1016/j.icheatmasstransfer.2015.10.003

Cited by 22 publications

(6 citation statements)

References 39 publications

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“…The data were collected for a temperature range of 30 to 70 °C after two hours of the sonication process. Various investigators used KD2 pro thermal property analyzer in their measurements of thermal conductivity [71][72][73][74][75][76]. This instrument applied the transient hot-wire method.…”

Section: Thermo-physical Propertiesmentioning

confidence: 99%

Characteristic of TiO2-SiO2 Nanofluid With Water/Ethylene Glycol Mixture for Solar Application

Fikri

Faizal

Adli

et al. 2021

ARFMTS

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Solar energy is a sustainable energy supply technology due to the renewable nature of solar radiation and the ability of solar energy conversion systems to generate greenhouse gas-free heat and electricity during their lifetime. In this study, an experimental investigation was conducted to explore the effect of hybrid nanofluids on heat transfer for solar application. An experiment was conducted for hybrid nanofluid concentrations starting from 0.3, 0.5, 0.7 and 1.0%. Each setup was exposed to short wavelength radiation under a solar simulator with 300, 500 and 700 W/m2 for 30 minutes, of which 15 minutes is the heating period and the next 15 minutes is for cooling. For solar radiation of 300 W/m2 within 15 minutes of charging process are 51.9 °C, 52.8 °C, 53.4 °C and 54.2 °C for concentration of nanofluids 0.3, 0.5, 0.7 and 1.0% respectively. The results for solar radiation of 500 and 700 W/m2 within 15 minutes almost the same pattern which is increasing during the charging process. It can be concluded that the higher concentrations of nanofluid give ample time to the test tube to transfer the heat and thus increased its temperature during the charging process.

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Section: Thermo-physical Propertiesmentioning

confidence: 99%

Characteristic of TiO2-SiO2 Nanofluid With Water/Ethylene Glycol Mixture for Solar Application

Fikri

Faizal

Adli

et al. 2021

ARFMTS

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“…The cooler fluid extracts heat from the hotter fluid as they flow alongside or cross each other. Different correlations are employed to calculate the Nusselt number and the heat transfer coefficient [9,10]. Bahmani h et al [1] investigated the Nu and f for water/alumina nanofluid in a DTHx.…”

Section: Introductionmentioning

confidence: 99%

“…FTIR and Raman techniques were used to study vibrational modes. Basava Poornima C et al [10] The work investigates Pr 3+: PPbKANPr glasses for visible lasers and optical amplifiers. Glasses were made using the melt-cast method.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Thermo-Hydraulic Performance using Water-Based Alumina Nanofluids: A Numerical Investigation

Raj,

Kumar,

Hussein

et al. 2024

E3S Web of Conf.

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This study investigates the heat transfer and fluid flow characteristics of pure water passing through a double tube heat exchanger (DTHX). Computational fluid dynamics (CFD) simulations were conducted using ANSYS-FLUENT 22 R1 software. Mathematical models and thermophysical properties of nanofluids and water from existing literature were employed. The comparison focused on pure water and 1% Al2O3/H2O nanofluids. Various operating variables such as Reynolds number and temperature were considered across the inner and outer tubes. The Reynolds number ranged from 2500 to 5500 at 80°C for the inner tube and 2500 at 15°C for the outer tube. Key findings include a 7.69% increase in friction factor for 1% Al2O3/H2O compared to pure water and a 16% increase compared to the Gnielinski correlation at a Reynolds number of 2500. The Nusselt number (Nu) exhibited a 98.42% increase compared to the Gnielinski correlation at a Reynolds number of 5500 and a 39% increase compared to pure water at the same Reynolds number. Heat transfer coefficients (hi) were found to increase by 9.52% compared to pure water and 12% compared to the correlation in existing literature.

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“…The results showed that at the operating temperature of 30°C, increase in Reynolds number (Re) led to a decrease in the Nusselt number, for concentrations up to 1.0% and decreased for concentrations lower than 1.0%, but was detected to be higher than the base fluid. Utilizing a nanofluid in cooperation with a ribbed tube for heat transfer improvement was documented in various research works, such as a ribbed tube with an Al 2 O 3 /water nanofluid …”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO₂ nanofluid

Kumait

Ibrahim

Abdullah

2019

Heat Trans. Asian Res.

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Experimental and numerical study of thermo-hydraulic performance of circumferentially ribbed tube with Al2O3 nanofluid

Cited by 22 publications

References 39 publications

Characteristic of TiO2-SiO2 Nanofluid With Water/Ethylene Glycol Mixture for Solar Application

Characteristic of TiO2-SiO2 Nanofluid With Water/Ethylene Glycol Mixture for Solar Application

Enhancement of Thermo-Hydraulic Performance using Water-Based Alumina Nanofluids: A Numerical Investigation

Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO₂ nanofluid

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Experimental and numerical study of thermo-hydraulic performance of circumferentially ribbed tube with Al2O3 nanofluid

Cited by 22 publications

References 39 publications

Characteristic of TiO2-SiO2 Nanofluid With Water/Ethylene Glycol Mixture for Solar Application

Characteristic of TiO2-SiO2 Nanofluid With Water/Ethylene Glycol Mixture for Solar Application

Enhancement of Thermo-Hydraulic Performance using Water-Based Alumina Nanofluids: A Numerical Investigation

Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO2 nanofluid

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Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO₂ nanofluid