Turbulent forced convection and entropy production of a nanofluid in a solar collector considering various shapes for nanoparticles

Alsarraf, Jalal; Shahsavar, Amin; Mahani, Roohollah Babaei; Talebizadehsardari, Pouyan

doi:10.1016/j.icheatmasstransfer.2020.104804

Cited by 31 publications

(4 citation statements)

References 49 publications

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“…The findings suggest that the application of nano fluids increases exergy performance and decreases SC entropy production, and the magnitude of these effects depends significantly on the form and concentration of the nanoparticles in use. Alsarraf et al [ 39 ] studied the impact of varying the shapes of nanoparticles on the rendering of MoS 2 /H 2 O nanoliquid inside SC. According to their results, blade-shaped nanoparticles produced the lowest level of entropy at φ = 4%, ṁ = 0.5 kg/s proving that the shape of nanoparticles also affects the entropy generation and energy competence of the structure.…”

Section: Introductionmentioning

confidence: 99%

Partial velocity slip effect on working magneto non-Newtonian nanofluids flow in solar collectors subject to change viscosity and thermal conductivity with temperature

et al. 2021

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Solar thermal collectors distribute, capture, and transform the solar energy into a solar thermal concentration device. The present paper provides a mathematical model for analyzing the flow characteristics and transport of heat to solar collectors (SCs) from non-Newtonian nanofluids. The non-Newtonian power-law scheme is considered for the nanofluid through partial slip constraints at the boundary of a porous flat surface. The nanofluid is assumed to differ in viscosity and thermal conductivity linearly with temperature changes and the magnetic field is appliqued to the stream in the transverse direction. The method of similarity conversion is used to convert the governing structure of partial differential formulas into the system of ordinary differential ones. Using the Keller box procedure, the outcoming ordinary differential formulas along with partial slip constraints are numerically resolved. A discussion on the flowing and heat transport characteristics of nanofluid influenced by power law index, Joule heating parameter, MHD parameter and slip parameters are included from a physical point of view. Comparison of temperature profiles showed a marked temperature increase in the boundary layer due to Joule heating. The thickness of the motion boundary-layer is minimized and the transport of heat through boundary-layer is improved with the partial slip velocity and magnetic parameters rising. Finally, With an increase in the Eckert number, the distribution of temperature within boundary layer is increased.

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Section: Introductionmentioning

confidence: 99%

Partial velocity slip effect on working magneto non-Newtonian nanofluids flow in solar collectors subject to change viscosity and thermal conductivity with temperature

et al. 2021

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“…Other 2D nanomaterials have also been used in the solar collector application for enhancing its thermal efficiency. Alsarraf et al [57] have reported the use of MoS 2 -based nanofluid. 2D MoSe 2 -based nanofluid shows an increase in thermal conductivity by ~11% for its application in concentrating solar power [58].…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

A Review on Environmental and Economic Impact of 2D Nanomaterials-Based Heat Transfer Fluids

Shaik

Goyal

et al. 2022

Journal of Nanomaterials

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2D nanomaterials-based heat transfer fluids show excellent thermal properties due to their large specific surface area; hence, they find large-scale applications in automobile industries and cooling processes. Therefore, it is very essential to study the environmental and economic aspects of these 2D nanomaterial-based nanofluids. In this review, we have discussed the environmental impact of 2D nanomaterial-based heat transfer nanofluids under various conditions. The environmental impact analysis of these materials has shown excellent capability in reducing the energy consumption for heat transfer operations. Moreover, the possibility of nanomaterials and base fluid recovery makes it a sustainable alternative. In addition, health risk assessment on humans, cytotoxicity, and life cycle analysis have also been explored. The price-performance index has been successfully used to study the economic impact of 2D nanomaterial-based heat transfer fluids. The overall economic impact of 2D nanomaterial-based heat transfer nanofluids provides an optimistic perspective over conventional heat transfer fluids. Moreover, graphene production, market trend, and commercialization obstacles were also discussed.

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“…Many numerical studies have been delivered on the effect of pertinent parameters on the MHD boundary layer flow of different nanofluids inside the different geometries by several researchers. [20][21][22][23] Fourier proposed the heat exchange mechanism in the application of nanofluid in various situations, the heat conduction model. Furthermore, Cattaneo introduced thermal relaxation time in the modified Fourier's law for heat conduction in an inflexible body.…”

Section: Introductionmentioning

confidence: 99%

“…Abu‐Nada et al 19 analyzed the heat transfer analysis of nanofluid by using a novel two‐component dissipative particle dynamics model. Many numerical studies have been delivered on the effect of pertinent parameters on the MHD boundary layer flow of different nanofluids inside the different geometries by several researchers 20–23 …”

Section: Introductionmentioning

confidence: 99%

Silver–ethylene glycol and copper–ethylene glycol based thermally radiative nanofluid characteristics between two rotating stretchable disks with modified Fourier heat flux

Nazia

Seshaiah²,

Reddy³

et al. 2022

Heat Trans

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In the present analysis, our aim is to investigate the mass and heat transport of silver (Ag)–ethylene glycol (EG) and copper (Cu)–EG‐based nanofluids between two rotating stretchable disks under the convective boundary conditions. We have also incorporated Cattaneo–Christov heat flux, thermal radiation, and chemical reaction in the fluid flow. The system of coupled partial differential equations is transformed into ordinary differential equations by using similarity transformations. The finite element method has been accomplished to find numerical solutions to transformed equations. The behavior of radial and tangential velocity, temperature fields, and concentration fields influenced by the various parameters are sketched through graphs. The local skin friction coefficient, Nusselt number, and Sherwood number are also calculated for the pertinent parameters and displayed the results through tables. It is perceived that velocity sketches of both nanoliquids degenerate with larger values of thermal relaxation parameters. Also, the values local Nusselt number of both Ag–EG, and Cu–EG based Cattaneo–Christov nanofluid intensifies with improving values of stretching parameter at the lower disk, whereas, it impedes at the upper disk.

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Turbulent forced convection and entropy production of a nanofluid in a solar collector considering various shapes for nanoparticles

Cited by 31 publications

References 49 publications

Partial velocity slip effect on working magneto non-Newtonian nanofluids flow in solar collectors subject to change viscosity and thermal conductivity with temperature

Partial velocity slip effect on working magneto non-Newtonian nanofluids flow in solar collectors subject to change viscosity and thermal conductivity with temperature

A Review on Environmental and Economic Impact of 2D Nanomaterials-Based Heat Transfer Fluids

Silver–ethylene glycol and copper–ethylene glycol based thermally radiative nanofluid characteristics between two rotating stretchable disks with modified Fourier heat flux

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