Simulation for impact of nanofluid spectral splitter on efficiency of concentrated solar photovoltaic thermal system

Sheikholeslami, M.; Khalili, Z.

doi:10.1016/j.scs.2023.105139

Cited by 76 publications

(5 citation statements)

References 31 publications

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Section: Anova Results For Heat Transfer Coefficientmentioning

confidence: 99%

“…The plot's optimal point labeled "Prediction 22.3964" indicates the mass flow rate and heat flux combination that maximizes the heat transfer coefficient. This point provides a target for experimental or practical applications where achieving the best thermal performance is critical [48,49]. The findings from these plots are instrumental in guiding further experimental designs and tailoring surface coatings for specific heat transfer enhancement needs.…”

Section: Anova Results For Heat Transfer Coefficientmentioning

confidence: 99%

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Enhancement in Turbulent Convective Heat Transfer Using Silver Nanofluids: Impact of Citrate, Lipoic Acid, and Silica Coatings

Bunpheng,

Dhairiyasamy

2024

ChemEngineering

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This study aims to investigate the thermohydraulic performance of silver nanofluids with different surface modifications (citrate, lipoic acid, and silica) in turbulent convective heat transfer applications. Three silver nanofluids were prepared, each modified with citrate, lipoic acid, or silica coatings. The nanofluids were characterized for stability using zeta potential measurements and evaluated in a smooth brass tube under turbulent flow conditions. The experimental setup involved measuring the temperature, pressure, and flow rate to assess heat transfer coefficients, pressure drops, and friction factors. The results were compared with distilled water as the base fluid and validated against theoretical models. The silica-shelled nanofluid (Ag/S) exhibited a significant 35% increase in the average heat transfer coefficient compared to distilled water, while the citrate-coated (Ag/C) and lipoic acid-coated (Ag/L) nanofluids showed slight decreases of approximately 0.2% and 2%, respectively. The Ag/S nanofluid demonstrated a 9% increase in the mean Nusselt number, indicating enhanced heat transfer capabilities. However, all modified nanofluids experienced higher pressure drops and friction factors than the base fluid, with the Ag/S nanofluid showing the highest increase in viscosity (11.9%). Surface modifications significantly influence the thermohydraulic performance of silver nanofluids. The silica-shelled nanofluid shows the most substantial enhancement in heat transfer, making it a promising candidate for applications requiring efficient thermal management. However, the increased hydraulic costs associated with higher-pressure drops and friction factors must be carefully managed. Further research is needed to optimize these nanofluids for specific industrial applications, considering long-term stability and the effects of different nanoparticle concentrations and geometries.

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Section: Anova Results For Heat Transfer Coefficientmentioning

confidence: 99%

Section: Anova Results For Heat Transfer Coefficientmentioning

confidence: 99%

Enhancement in Turbulent Convective Heat Transfer Using Silver Nanofluids: Impact of Citrate, Lipoic Acid, and Silica Coatings

Bunpheng,

Dhairiyasamy

2024

ChemEngineering

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“…Sheikholeslami and Khalili used nanofluid filtration to increase a concentrated solar heating (CPVT) module’s performance. 8 …”

Section: Introductionmentioning

confidence: 99%

Comparative study of some non-Newtonian nanofluid models across stretching sheet: a case of linear radiation and activation energy effects

Shah,

Idrees,

Bariq

et al. 2024

Sci Rep

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The use of renewable energy sources is leading the charge to solve the world’s energy problems, and non-Newtonian nanofluid dynamics play a significant role in applications such as expanding solar sheets, which are examined in this paper, along with the impacts of activation energy and solar radiation. We solve physical flow issues using partial differential equations and models like Casson, Williamson, and Prandtl. To get numerical solutions, we first apply a transformation to make these equations ordinary differential equations, and then we use the MATLAB-integrated bvp4c methodology. Through the examination of dimensionless velocity, concentration, and temperature functions under varied parameters, our work explores the physical properties of nanofluids. In addition to numerical and tabular studies of the skin friction coefficient, Sherwood number, and local Nusselt number, important components of the flow field are graphically shown and analyzed. Consistent with previous research, this work adds important new information to the continuing conversation in this area. Through the examination of dimensionless velocity, concentration, and temperature functions under varied parameters, our work explores the physical properties of nanofluids. Comparing the Casson nanofluid to the Williamson and Prandtl nanofluids, it is found that the former has a lower velocity. Compared to Casson and Williamson nanofluid, Prandtl nanofluid advanced in heat flux more quickly. The transfer of heat rates are $$25.87\%$$ 25.87 % , $$33.61\%$$ 33.61 % and $$40.52\%$$ 40.52 % at $$Rd =0.5, Rd=1.0$$ R d = 0.5 , R d = 1.0 , and $$Rd=1.5$$ R d = 1.5 , respectively. The heat transfer rate is increased by $$6.91\%$$ 6.91 % as the value of Rd rises from 1.0 to 1.5. This study is further strengthened by a comparative analysis with previous research, which is complemented by an extensive table of comparisons for a full evaluation.

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“…They demonstrated a correlation to achieve optimal outputs. Sheikholeslami and Khalili [37,38] harnessed various nanoparticle types with the aim of boosting the efficiency of solar panels. Their application of nanofluid extends beyond mere cooling, encompassing its role as a spectral filter as well.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of thermal storage system during freezing and loading nano-powders

Almohsen

2024

J Therm Anal Calorim

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In pursuit of advancing the efficiency of cold energy storage, a uniquely designed curved container has been employed, filled with a water-nanoparticle mixtureQ. The container is equipped with fins, strategically leveraging the enhanced conduction facilitated by the presence of nanoparticles. The simulation of the intricate unsteady phenomena in this study has been conducted using the finite element technique, providing a robust analytical framework. The incorporation of an adaptive grid ensures a refined resolution, particularly in the vicinity of the ice front region. The nanoparticle fraction (ϕ) emerges as a pivotal factor directly influencing the rate of solidifying. The dispersion of nano-powders leads to a noteworthy reduction in completion time, demonstrating a substantial 33.21% improvement. The diameter of the nano-powders (dp) introduces diverse effects on the solidification process, primarily due to its significant influence on the conductivity of the nanomaterial. An in-depth exploration of the impact of dp reveals compelling insights. As the dp increases from its smallest size to 40 nm, there is a commendable 15.12% reduction in the required freezing time. However, a subsequent increment in dp beyond this threshold results in a notable 36.56% increase in the freezing time. The findings presented here not only contribute to the fundamental understanding of freezing processes but also hold practical implications for the design and optimization of cold storage systems.

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Simulation for impact of nanofluid spectral splitter on efficiency of concentrated solar photovoltaic thermal system

Cited by 76 publications

References 31 publications

Enhancement in Turbulent Convective Heat Transfer Using Silver Nanofluids: Impact of Citrate, Lipoic Acid, and Silica Coatings

Enhancement in Turbulent Convective Heat Transfer Using Silver Nanofluids: Impact of Citrate, Lipoic Acid, and Silica Coatings

Comparative study of some non-Newtonian nanofluid models across stretching sheet: a case of linear radiation and activation energy effects

Evaluation of thermal storage system during freezing and loading nano-powders

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