Direct absorption solar collector with magnetic nanofluid: CFD model and parametric analysis

Balakin, Boris V.; Жданеев, О.В.; Kosinska, Anna; Kutsenko, K.V.

doi:10.1016/j.renene.2018.12.095

Cited by 60 publications

(17 citation statements)

References 20 publications

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“…This achieves the thermal enhancement. Similar findings have been reported by numerous authors including Tafarroj et al [28], Fattahi et al [30] Balakin et al [31] and Nasrin et al [35] for both carbon-based and metallic nanoparticles although they did not examine the case of gold.…”

Section: Resultssupporting

confidence: 88%

“…Fattahi et al [30] employed a DQ9 grid in Lattice Boltzmann computations of natural convection in a square solar enclosure containing alumina and copper -water nanofluids for Rayleigh numbers ranging from 1000 to 1000,000 and volume fractions up to 5%, noting that copper achieves higher heat transfer rates (Nusselt numbers). Balakin et al [31] used the commercial CFD package, STAR-CCM+, to simulate the multiphase thermo-magnetic convection in ionic carbon nano-particle doped nanofluids in a direct absorption collector, observing that magnetic nanofluids attain 30% enhancement in collector efficiency. Selmi et al [32] investigated solar irradiation and mixed convection and radiation heat transfer in a flat plate solar energy collector with and without circulating water flow using a finite element CFD approach.…”

Section: Introductionmentioning

confidence: 99%

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Computation of Gold-Water Nanofluid Natural Convection in a Three-Dimensional Tilted Prismatic Solar Enclosure With Aspect Ratio and Volume Fraction Effects

Kuharat

Bég

Kadir

et al. 2020

Nano Sci Technol Int J

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Co m p u t a tio n of g ol d-w a t e r n a n ofl ui d n a t u r al c o nv e c tio n in a t h r e e-di m e n sio n al tilt e d p ri s m a ti c s ol a r e n clo s u r e wi t h a s p e c t r a tio a n d vol u m e fr a c tio n eff e c t s Ku h a r a t , S, B e g, OA, Ka dir, A, Vas u, B, B e g, TA a n d Jou ri, W S h t t p:// dx. d oi.o r g/ 1 0. 1 6 1 5/ N a n o S ciTe c h n olI n tJ.2 0 2 0 0 3 1 2 5 7 Ti t l e Co m p u t a tio n of g ol d-w a t e r n a n ofl ui d n a t u r al c o nv e c tio n in a t h r e e-di m e n sio n al tilt e d p ri s m a tic s ol a r e n clo s u r e wi t h a s p e c t r a tio a n d vol u m e fr a c tio n eff e c t s

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Computation of Gold-Water Nanofluid Natural Convection in a Three-Dimensional Tilted Prismatic Solar Enclosure With Aspect Ratio and Volume Fraction Effects

Kuharat

Bég

Kadir

et al. 2020

Nano Sci Technol Int J

View full text Add to dashboard Cite

show abstract

“…In another study, in Computational Fluid Daynamics (CFD) model, the effect of the size of magnetic nanoparticles on the energy absorption in solar collector has been investigated. By increasing the nanoparticle size to about 100 nm, thermal efficiency has been increased, but larger than 100 nm, the thermal efficiency has been reduced (Guo et al 2017, Balakin et al 2019. Similar behavior in the present study was observed for GNP size less than 100 nm meaning that the dose enhancement factor has been increased with increasing size of the gold nanoparticles.…”

Section: Discussionsupporting

confidence: 87%

Different distributions of gold nanoparticles on the tumor and calculation of dose enhancement factor by Monte Carlo simulation

Keshavarz¹,

Sardari²

2019

NUCET

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Gold nanoparticles can be used to increase the dose of the tumor due to its high atomic number as well as being free from apparent toxicity. The aim of this study is to evaluate the effect of distribution of gold nanoparticles models, as well as changes in nanoparticle sizes and spectrum of radiation energy along with the effects of nanoparticle penetration into surrounding tissues in dose enhancement factor DEF. Three mathematical models were considered for distribution of gold nanoparticles in the tumor, such as 1-uniform, 2- non-uniform distribution with no penetration margin and 3- non-uniform distribution with penetration margin of 2.7 mm of gold nanoparticles. For this purpose, a cube-shaped water phantom of 50 cm size in each side and a cube with 1 cm side placed at depth of 2 cm below the upper surface of the cubic phantom as the tumor was defined, and then 3 models of nanoparticle distribution were modeled. MCNPX code was used to simulate 3 distribution models. DEF was evaluated for sizes of 20, 25, 30, 50, 70, 90 and 100 nm of gold nanoparticles, and 50, 95, 250 keV and 4 MeV photon energies. In uniform distribution model the maximum DEF was observed at 100 nm and 50 keV being equal to 2.90, in non-uniform distribution with no penetration margin, the maximum DEF was measured at 100 nm and 50 keV being 1.69, and in non-uniform distribution with penetration margin of 2.7 mm, the maximum DEF was measured at 100 nm and 50 keV as 1.38, and the results have been showed that the dose was increased by injecting nanoparticles into the tumor. It is concluded that the highest DEF could be achieved in low energy photons and larger sizes of nanoparticles. Non-uniform distribution of gold nanoparticles can increase the dose and also decrease the DEF in comparison with the uniform distribution. The non-uniform distribution of nanoparticles with penetration margin showed a lower DEF than the non-uniform distribution without any margin and uniform distribution. Meanwhile, utilization of the real X-ray spectrum brought about a smaller DEF in comparison to mono-energetic X-ray photons.

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“…Balakin et al [87] presented a Eulerian-Eulerian two-phase CFD-model of the direct absorption solar collector with nanofluid. The model was capable of reproducing motion and heat transfer in each separate phase: the base fluid (continuous) and the nanoparticles (dispersed).…”

Section: Heat and Nanofluid Transfermentioning

confidence: 99%

Advances of Nanofluids in Solar Collectors - A Review of Numerical Studies

Menni¹,

Chamkha²,

Lorenzini³

et al. 2019

MMEP

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This paper presents a detailed review of the numerical studies carried out by various researchers in order to obtain enhanced heat transfer in free, forced, and mixed convection, under laminar, transition, and turbulent flow regimes, by using nanofluids in different solar collector geometries. Recently, nanofluids have been increasingly used in various solar collector configurations. Nano-sized metallic or non-metallic particles such as Cu, Au, Al2O3, SiO2, TiO2, CuO, etc, were used in the heat transfer fluid for various solid volume fractions. The average size of the particles was less than 100 nm. The higher conductivity of nanoparticles even at low particle concentration results in higher thermal conductivity of the base fluid and improves the thermal characteristics of the system. Nanoparticle size, type and shape are important factors for the thermal conductivity enhancement of the nanofluid with nanoparticles.

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Direct absorption solar collector with magnetic nanofluid: CFD model and parametric analysis

Cited by 60 publications

References 20 publications

Computation of Gold-Water Nanofluid Natural Convection in a Three-Dimensional Tilted Prismatic Solar Enclosure With Aspect Ratio and Volume Fraction Effects

Computation of Gold-Water Nanofluid Natural Convection in a Three-Dimensional Tilted Prismatic Solar Enclosure With Aspect Ratio and Volume Fraction Effects

Different distributions of gold nanoparticles on the tumor and calculation of dose enhancement factor by Monte Carlo simulation

Advances of Nanofluids in Solar Collectors - A Review of Numerical Studies

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