Increasing heat transfer in flat plate solar collectors using various forms of turbulence-inducing elements and CNTs-CuO hybrid nanofluids
TLDR
In this article , the authors used hybrid nanofluids and various turbulence-inducing elements to increase the convective heat transfer coefficient (HTC) of the flat plate solar collector.About:
This article is published in Case Studies in Thermal Engineering.The article was published on 2022-03-01 and is currently open access. It has received 21 citations till now. The article focuses on the topics: Nanofluid & Turbulence.read more
Citations
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Heat transfer inspection in [(ZnO-MWCNTs)/water-EG(50:50)]hnf with thermal radiation ray and convective condition over a Riga surface
TL;DR: In this paper , the authors examined the improved thermal efficiency of hybrid nanoparticles in the base solvent and showed that induction of novel thermal radiations (Rd) is a prime source to improve heat capability of hybrid nanofluids.
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Applying numerical and computational methods to investigate the changes in the fluid parameters of the fluid passing over fins of different shapes with the finite element method
Reza Fathollahi Reza Fathollahi,Saman Hesaraki,Arsam Bostani,Ehsan Shahriyari,H. Shafiee,Pooya Pasha,Fateme Nadalinia Chari,Davood Domiri Ganji +7 more
TL;DR: In this article , the authors examined the velocity and temperature variation in the x-direction as well as the water fluid concentration through triangular, rectangular, and chamfer baffles in the presence of a uniform magnetic field.
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A Review of the Enhancement of Solar Thermal Collectors using Nanofluids and Turbulators
Aissa Abderrahmane,Naef A.A.Qasem,Abed Mourad,Houssem Laidoudi,Obai Younis,Kamel Guerdi,Anas Alazzam +6 more
TL;DR: In this article , the effect of employing nanofluids and turbulence generators in solar collectors to increase thermal performance and extract more useable solar energy is discussed. And the proposed geometries for turbulators, their improvement in overall performance, and employed nanof-luids are presented and reviewed.
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Employing the (SWCNTs-MWCNTs)/H2O nanofluid and topology structures on the microchannel heatsink for energy storage: A thermal case study
TL;DR: In this paper , the authors investigated the increase of heat transfer rate of the microchannel (heatsink) with high heat flux using topology structures and CNTs nanofluids.
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Numerical investigation of the effect of the turbulator geometry (disturber) on heat transfer in a channel with a square section
As’ad Alizadeh,Azher M. Abed,Hussein Jebrail Zekri,Ghassan Fadhil Smaisim,Bahram Jalili,Pooya Pasha,Davood Domiri Ganji +6 more
TL;DR: In this paper , the authors used the limited volume method to solve governing equations in three-dimensional space and Cartesian coordinates using Ansys Fluent software and compared turbulators SLT and then TRT to other turbulators (TRT, SHT, RET).
References
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A new k-ϵ eddy viscosity model for high reynolds number turbulent flows
TL;DR: In this article, a new k -ϵ eddy viscosity model, which consists of a new model dissipation rate equation and a new realizable eddy viscous formulation, is proposed.
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Review of heat transfer enhancement methods: Focus on passive methods using swirl flow devices
TL;DR: In this paper, an extensive literature review of various turbulators (coiled tubes, extended surfaces (fin, louvered strip, winglet), rough surfaces (Corrugated tube, Rib) and swirl flow devices such as twisted tape, conical ring, snail entry turbulator, vortex rings, coiled wire) for enhancing heat transfer in heat exchangers.
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Neue Gleichungen für den Wärme- und den Stoffübergang in turbulent durchströmten Rohren und Kanälen
TL;DR: In this paper, a Gleichung for warme and stoffubergangskoeffizienten in durchstromten Rohren und Kanalen wurde unter Einbeziehung von Mesergebnissen fur grose Reynolds-and hohe Prandtlzahlen entwickelt, die sowohl den Ubergangsbereich als auch den Bereich der vollausgebildeten turbulenten Stromung einschliest.
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Heat transfer behaviors in a tube with combined conical-ring and twisted-tape insert ☆
TL;DR: In this article, the conical-ring turbulators and twisted-tape swirl generators were used for heat transfer, friction factor and enhancement efficiency in a circular tube fitted with conical ring turbulators.
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Heat transfer enhancement in a flat plate solar collector with different flow path shapes using nanofluid
TL;DR: In this article, U-shaped, wavy and spiral pipes with identical pipe lengths on a flat plate collector are simulated and three-dimensional and steady state equations of continuity, momentum, SST k-ω turbulence model, and energy are solved.