The effect of magnetic field and nanofluid on thermal performance of two-phase closed thermosyphon (TPCT)

Heris, Saeed Zeinali; Salehi, H.; Noie, S.H.

doi:10.5897/ijps11.1019

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…The Bénard convection in nanofluids in the presence of Lorentz force are providing promising results through the progressively ironic and varied technologies used for cancer therapy, solar cell augmentation, pharmacology, flow-meters, pumps, magnetic storage, magnetohydrodynamic generators, accelerators, cooling the electronic equipment, magnetic field sensors, geothermal reservoirs, insulators, heating and ventilation control in building design etc. [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Hall current effects on a magnetic nanofluid layer under temperature gradient

2021

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In the Bénard convection governed nanofluid confined between two horizontal infinite free-free boundaries, the effect of Hall current is investigated when it is subjected to the constant vertical magnetic field. The Buongiorno mathematical model for hydromagnetic flow with Hall currents has been considered. The Brownian motion effects and thermophoresis of nanoparticles have been included in the energy equation. A realistic boundary condition based on zero nanoparticle mass flux at the walls is incorporated for the analysis. The impacts of Brownian motion, convective heat transfer, thermophoresis of nanoparticles and zero mass flux conditions are also deliberated through the behaviour of the related parameters. The parameters representing the model incorporate the consequences of newly introduced physically realistic boundary conditions and Hall currents. For comprehensive physical interpretation the embedded parameters have been plotted and deliberated graphically. It is found that Hall current is responsible to enhances the instability of the system and sets the convection earlier. A rigorous comparison has been made with the existing results. The results are shown graphically and verified numerically.

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Section: Introductionmentioning

confidence: 99%

Hall current effects on a magnetic nanofluid layer under temperature gradient

2021

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“…The thermal efficiency of the heat pipes are calculated by based on the law of thermodynamics 29 , 30 using following Eq. ( 7 ).…”

Section: Methodsmentioning

confidence: 99%

Investigation of thermal conductivity and thermal performance of heat pipes by structurally designed copolymer stabilized ZnO nanofluid

Pavithra,

Parol,

Brusly Solomon

et al. 2023

Sci Rep

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The present study concentrated on estimating the thermal conductivity, stability, efficiency, and resistance of a heat pipe for heat exchangers, which were essential for many industrial applications. To achieve this, copolymer of amphiphilic poly (styrene-co-2-Acrylamido-2-methylpropane sulfonic acid) poly (STY-co-AMPS) was synthesized by free radical polymerisation technique. The dispersant were used for homogeneous solution and stabilization of ZnO nanofluids. The effect of dispersant on the thermal conductivity of nanofluids was analysed using a KD2 pro thermal property analyser. There is a significant increase in fluid conductivity had a nonlinear relationship with the volume fraction. The maximum enhancement was observed at an optimized concentration of dispersant at 1.5 vol%. Same time, the influence of dispersant agent on the thermal conductivity of nanofluids were compared with linear polyelectrolytes. Further, the experimental values were compared to the existing classical models based on the reasonable aggrement, the prepared nanofluids were employed as a working medium. The conventional screen mesh heat pipe and the temperature distribution to the thermal resistance of the heat pipe was investigated experimentally. The result shows, optimum concentration of dispersants on nanoparticles exhibits an enhanced heat efficiency as compared with the base fluids. Further, the thermal resistance and temperature distribution show decreased behaviour by increasing the particle volume fraction and dispersant concentration.

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“…whereas the surface heat flux q w and surface shear stress τ w are given by q w = (∂T /∂y) y=0 (−k nf ) , τ w = ∂u ∂y y=0 µ nf (12) with k nf and µ nf being the thermal conductivity and dynamic viscosity of the nanofluid, respectively. Using the similarity transformations (7) in equation ( 12) we get, in view of (11), as…”

Section: Problem Formulationmentioning

confidence: 99%

Mhd Stagnation Point Flow and Heat Transfer of Cu –Water Nanofluid over A Stretching Sheet

Bashir¹,

Ashraf²,

Ali³

2022

MSA

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A comprehensive study of Magnetohydrodynamics flow (stagnation Point) with heat transferal properties of Cu–Water nanofluid along a stretched sheet in the existence of a transverse magnetic field is analyzed. The governing equalities along with their conditions on boundary points are firstly converted to ordinary differential equations of non-linear category by similarity transformations. Lastly finite difference discretization is utilized. The flow and heat transfer parameters, namely: stretching parameter, magnetic parameter, the Prandtl number and solid volume fraction are investigated by tablular and graphical representation.

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The effect of magnetic field and nanofluid on thermal performance of two-phase closed thermosyphon (TPCT)

Cited by 8 publications

References 38 publications

Hall current effects on a magnetic nanofluid layer under temperature gradient

Hall current effects on a magnetic nanofluid layer under temperature gradient

Investigation of thermal conductivity and thermal performance of heat pipes by structurally designed copolymer stabilized ZnO nanofluid

Mhd Stagnation Point Flow and Heat Transfer of Cu –Water Nanofluid over A Stretching Sheet

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