An experimental and theoretical investigation on the effects of adding hybrid nanoparticles on heat transfer efficiency and pumping power of an oil-based nanofluid as a coolant fluid

Asadi, Meisam; Asadi, Amin; Aberoumand, Sadegh

doi:10.1016/j.ijrefrig.2018.03.014

Cited by 110 publications

(29 citation statements)

References 49 publications

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“…Generally, the addition of nanoparticles yields an enhancement of thermal conductivity that depends on the volume fraction of nanomaterials, particle size, nature of the material, etc. So, nanofluids have been shown to be an interesting alternative to the typical heat transfer fluids in several applications, such as the cooling of electronic devices [ 2 , 3 ] and solar energy [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

A Solvothermal Synthesis of TiO2 Nanoparticles in a Non-Polar Medium to Prepare Highly Stable Nanofluids with Improved Thermal Properties

et al. 2018

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Nanofluids are systems with several interesting heat transfer applications, but it can be a challenge to obtain highly stable suspensions. One way to overcome this challenge is to create the appropriate conditions to disperse the nanomaterial in the fluid. However, when the heat transfer fluid used is a non-polar organic oil, there are complications due to the low polarity of this solvent. Therefore, this study introduces a method to synthesize TiO2 nanoparticles inside a non-polar fluid typically used in heat transfer applications. Nanoparticles produced were characterized for their structural and chemical properties using techniques such as X-ray Diffraction (XRD), Raman spectroscopy, Transmission Electron Microscopy (TEM), Fourier Transform Infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The nanofluid showed a high stability, which was analyzed by means of UV-vis spectroscopy and by measuring its particle size and ζ potential. So, this nanofluid will have many possible applications. In this work, the use as heat transfer fluid was tested. In this sense, nanofluid also presented enhanced isobaric specific heat and thermal conductivity values with regard to the base fluid, which led to the heat transfer coefficient increasing by 14.4%. Thus, the nanofluid prepared could be a promising alternative to typical HTFs thanks to its improved thermal properties and high stability resulting from the synthesis procedure.

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Section: Introductionmentioning

confidence: 99%

A Solvothermal Synthesis of TiO2 Nanoparticles in a Non-Polar Medium to Prepare Highly Stable Nanofluids with Improved Thermal Properties

et al. 2018

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“…Alshomrani and Gul [11] computed the analytical solution of magneto-hydrodynamics thin film spray of water base Al 2 O 3 and CuO nanofluids on a horizontal stretchable cylinder. Asadi et al [12,13] investigated the experimental and theoretical influence of adding MWCNTs, ZnO nanoparticles, and MgO-MWCNT hybrid nanofluids in thermal oil. Gul et al [14] discussed the impact of an effective Prandtl number on water and ethylene glycol-based alumina nanofluid spray along a stretching cylinder.…”

Section: Literature Reviewmentioning

confidence: 99%

MHD Thin Film Flow and Thermal Analysis of Blood with CNTs Nanofluid

et al. 2019

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Our main objective in the present work is to elaborate the characteristics of heat transport and magneto-hydrodynamics (MHD) finite film flow of human blood with Carbon Nanotubes (CNTs) nanofluids over a stretchable upright cylinder. Two kinds of CNTs nanoparticles, namely (i) SWCNTs (single walled carbon nanotubes) and (ii) MWCNTs (multi walled carbon nanotubes), are used with human blood as a base liquid. In addition, a uniform magnetic field (B) has been conducted perpendicularly to the motion of nanoliquid. The transformation of the partial differential structure into a non-linear ordinary differential structure is made by using appropriate dimensionless quantities. The controlling approach of the Homotopy analysis method (HAM) has been executed for the result of the velocity and temperature. The thickness of the coating film has been kept variable. The pressure distribution under the variable thickness of the liquid film has been calculated. The impacts of different variables and rate of spray during coating have been graphically plotted. The coefficient of skin friction and Nusselt number have been presented numerically. In addition, it is noticed that the thermal field of a nanoliquid elevates with rising values of ϕ and this increase is more in SWCNTs nanofluid than MWCNTs nanofluid.

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“…However, technical limitations in that era constrained realizing such an idea. Generally, NF extraordinary thermophysical properties have been proved through different studies compared to the conventional heat transfer fluids …”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamics convection in nanofluids‐filled cavities: A review

et al. 2020

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This manuscript reviews most of the available papers on the nanofluids convection in different shapes of cavities and enclosures, applying a magnetic field. The papers have been categorized into two major classes: natural convection and mixed convection. Important research have been described more and then two tables demonstrate a summary of the papers. Statistical considerations are mentioned to realize some helpful information on the scope. Most of the results demonstrated that the heat transfer usually enhances with an increase in nanoparticles volume concentration and Rayleigh number and shows inverse behavior with growth in the Hartmann number. The average Nusselt number will decrease with any increase in the Richardson number.Moreover, magnetohydrodynamic constraints the heat transfer and therefore, can play as an applicable controller of heat transfer applications. K E Y W O R D Scavity, mixed convection, nanofluids, natural convection

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An experimental and theoretical investigation on the effects of adding hybrid nanoparticles on heat transfer efficiency and pumping power of an oil-based nanofluid as a coolant fluid

Cited by 110 publications

References 49 publications

A Solvothermal Synthesis of TiO2 Nanoparticles in a Non-Polar Medium to Prepare Highly Stable Nanofluids with Improved Thermal Properties

A Solvothermal Synthesis of TiO2 Nanoparticles in a Non-Polar Medium to Prepare Highly Stable Nanofluids with Improved Thermal Properties

MHD Thin Film Flow and Thermal Analysis of Blood with CNTs Nanofluid

Magnetohydrodynamics convection in nanofluids‐filled cavities: A review

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