A review of the use of nanofluids as heat-transfer fluids in parabolic-trough collectors

Panduro, Elvia Anabela Chavez; Finotti, Francesco; Largiller, Grégory; Lervåg, Karl Yngve

doi:10.1016/j.applthermaleng.2022.118346

Cited by 57 publications

(28 citation statements)

References 135 publications

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“…From the previous literature, Aziz et al, [8] found that 87% of nanofluids preparation used water as the base fluid. Nanofluids are employed in various thermal applications such as in the automotive industry [9]. A promising of providing high thermal conductivity is key to the synthesising of high-impact nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes (CNTs) Nanofluids Flow and Heat Transfer under MHD Effect over a Moving Surface

Samat¹,

Bachok

Arifin

2023

ARFMTS

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The 2D steady flow of CNTs nanofluids and heat transfer over the moving plate through a uniform free stream under the effect of magnetohydrodynamics (MHD) is studied. The movement of plate is presumed in the opposite or same direction. A mathematical modelling that is governed by a system of partial differential equations (PDEs) subjected to boundary conditions is transformed into a system of nonlinear ordinary equations (ODEs). An attempt at finding the expected outcomes is successfully executed by solving ODEs system using MATLAB bvp4c solver. The effect of various parameters such as magnetic field, CNTs volume friction and moving parameter on velocity and temperature profile, skin friction, Nusselt number and heat transfer rate are investigated numerically. The results are presented using tabular and graphical illustration. From the results, the increment of magnetic field into the flow will increase in both the skin friction and the heat transfer coefficient. Besides that, non-unique solutions are obtained when the plate moves in the range of and . For comparing the performance of base fluid, kerosene works better than water as a base liquid. We are also showing that SWCNTs is more effective both in the skin friction and the heat transfer coefficient compare to MWCNTs.

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Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes (CNTs) Nanofluids Flow and Heat Transfer under MHD Effect over a Moving Surface

Samat¹,

Bachok

Arifin

2023

ARFMTS

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“…These nanotechnology-based fluids, termed as nanofluids, have outstanding properties such as high thermal conductivity. Today, nanofluids are used to improve thermal performance in a wide variety of applications [1][2][3][4][5][6]. Recent research has proven that the use of nanofluids and coiled tubes concurrently may considerably increase the HTR [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the thermal-hydraulic performance of conically coiled tubes using Al2O3/water nanofluid

Abdel‐Ghany

Sharafeldin²,

Abdellatif³

et al. 2023

Journal of Engineering Research

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The thermal-hydraulic performance of conically coiled tubes (CCTs) was investigated experimentally under constant heat flux boundary conditions in this study. The effect of several factors, such as the flow Dean number, coil torsion, and varied nanoparticle weight concentrations, on the flow's heat transfer coefficient and pressure drop was studied. Thermo-hydraulic performance was studied at 0.3%, 0.6%, and 0.9% volume concentrations (ϕ) of Al2O3/water nanofluid, a Dean number (De) of 1148-2983, and coil torsions (λ) ranging from 0.02 to 0.052. Results indicated that the heat transfer rates (HTRs) of CCTs increased when the coil torsion was decreased. According to the findings, the average heat transfer coefficient (havg) rises as De increases, while friction factor (ƒ) tends to decrease. The average increase in havg is 32% at lower De values and 26% at higher De values as the nanofluid concentration increased from 0.3% to 0.9%. The thermal performance factor (TPF) improved when λ lowered from 0.052 to 0.02.

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“…As a result, Choi and Eastman [1] suggested using 100-nmsized nanoparticles in ordinary fuids and came up with the term "nanofuid" to refer to them. Nanofuids are frequently employed in contemporary industries and technologies, including modern drug delivery systems [2], engineering devices in power [3], automotive industry [4], biotechnology cooling [5], oil recovery [6], nanotechnology [7], and others. Tese nanofuid applications led Alotaibi and Rafque [8] to explore the heat relocation aspects of nanofuid fow across two parallel disks.…”

Section: Introductionmentioning

confidence: 99%

On the Non‐Fourier’s Heat and Non‐Fick’s Mass Flux for the Quadratic Convection Flow of a Couple Stress Nanofluid with Wu’s Slip

Ibrahim

Gamachu

Abebe

2023

Mathematical Problems in Engineering

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The overall goal of this paper is to look at how non-Fick’s and non-Fourier’s concepts affect the quadratic convection flow of a couple stress nanofluid across an extending surface under Wu’s slip, convective heating, and convective mass transfer conditions. The governing equations in the investigation are also initially stated as higher-order partial differential equations and thereafter rehabilitated into ordinary differential equations via similarity conversions. Finally, the numerical approach of the bvp5c solver in MATLAB R2019a is engaged to solve the resultant equations. It has been researched and shown using graphs and tables how physical characteristics affect the velocity, temperature, and concentration fields. The results show that the velocity profile along the x-direction grows with intensifying values of the couple stress, quadratic convection, buoyancy, and third-order slip constraints, whereas it declines with intensifying values of the fourth-order slip and magnetic field constraints. Also, the results show that as the velocity ratio constraint is increased, the velocity field along the y-axis increases. Furthermore, an augment in the values of the quadratic convection constraint and Schmidt number, respectively, causes a diminution in temperature and concentration distributions. The results of the current study can be used to increase lubricant production and reduce machinery deterioration. Furthermore, this theoretical and numerical deliberation has the potential to be beneficial in the field of bio-fluid dynamics and biomedicine.

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A review of the use of nanofluids as heat-transfer fluids in parabolic-trough collectors

Cited by 57 publications

References 135 publications

Carbon Nanotubes (CNTs) Nanofluids Flow and Heat Transfer under MHD Effect over a Moving Surface

Carbon Nanotubes (CNTs) Nanofluids Flow and Heat Transfer under MHD Effect over a Moving Surface

Experimental investigation of the thermal-hydraulic performance of conically coiled tubes using Al2O3/water nanofluid

On the Non‐Fourier’s Heat and Non‐Fick’s Mass Flux for the Quadratic Convection Flow of a Couple Stress Nanofluid with Wu’s Slip

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