Experimental analysis applied to an evacuated tube solar collector equipped with parabolic concentrator using multilayer graphene-based nanofluids

Natividade, Pablo Sampaio Gomes; Moura, Gabriel de Moraes; Avallone, Elson; Filho, Ênio Pedone Bandarra; Gelamo, Rogério Valentim; Gonçalves, Julio Cesar de Souza Inácio

doi:10.1016/j.renene.2019.01.091

Cited by 56 publications

(11 citation statements)

References 51 publications

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“…Natividade et al [186] experimentally evaluated an ETSC using multilayer graphene (MLG)-based water nanofluids. The ETSC was equipped with parabolic concentrators.…”

Section: Evacuated Tube Solar Collector (Etsc)mentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

207

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The field of nanofluids has received interesting attention since the concept of dispersing nanoscaled particles into a fluid was first introduced in the later part of the twentieth century. This is evident from the increased number of studies related to nanofluids published annually. The increasing attention on nanofluids is primarily due to their enhanced thermophysical properties and their ability to be incorporated into a wide range of thermal applications ranging from enhancing the effectiveness of heat exchangers used in industries to solar energy harvesting for renewable energy production. Owing to the increasing number of studies relating to nanofluids, there is a need for a holistic review of the progress and steps taken in 2019 concerning their application in heat transfer devices. This review takes a retrospective look at the year 2019 by reviewing the progress made in the area of nanofluids preparation and the applications of nanofluids in various heat transfer devices such as solar collectors, heat exchangers, refrigeration systems, radiators, thermal storage systems and electronic cooling. This review aims to update readers on recent progress while also highlighting the challenges and future of nanofluids as the next-generation heat transfer fluids. Finally, a conclusion on the merits and demerits of nanofluids is presented along with recommendations for future studies that would mobilise the rapid commercialisation of nanofluids.

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“…Natividade et al [186] experimentally evaluated an ETSC using multilayer graphene (MLG)-based water nanofluids. The ETSC was equipped with parabolic concentrators.…”

Section: Evacuated Tube Solar Collector (Etsc)mentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

207

View full text Add to dashboard Cite

show abstract

“…Jarahnejad, et al [208] studied the influence of several factors (temperature, NP concentration, size, and surfactant) on effective viscosity of water-Al2O3 and water-TiO2 NFs for 20-50℃ at NP concentration of 3-14.3 wt.%. Different surfactants (octyl-silane, polycarboxylate and trioxadecane acid) were added to formulate the NFs dispersing various sizes of Al2O3 (200,250 and 300 nm) and TiO2 (140, 200 and 90 nm) NPs. The results confirmed that the rise in 𝜇 𝑛𝑓 with 200 nm is lower than the NF with 250 and 300 nm particle sizes at 2.4 vol% loading for water-Al2O3, although a general trend was not mentioned explicitly.…”

Section: Base Fluid Propertiesmentioning

confidence: 99%

State-of-the-art review on water-based nanofluids for low temperature solar thermal collector application

Rubbi

Das

Habib

et al. 2021

Solar Energy Materials and Solar Cells

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“…The authors reported an 8.66% increase in the thermal efficiency for the highest concentration (0.20%). Recently, Natividade et al studied a promising new type of nanoparticles called multilayer graphene suspended in water as a base fluid, with different flow rates and two‐volume fractions (0.00045% and 0.00068%). It was noticed that a significant improvement in thermal efficiency was obtained with increasing the volume fraction where it was 31% with volume fraction of 0.00045% whereas it reached up to 76% with the largest volume fraction compared with the base fluid.…”

Section: Thermal Performance Improvement By Adding Nanoparticlesmentioning

confidence: 99%

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

Abed

Afgan

2020

Int J Energy Res

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A wide range of engineering industrial applications require both the thermal and optical efficiencies of the system to be maximized with a reasonable low penalty for the friction factor and subsequently low losses in pressure. Among the family of concentrated solar power systems, parabolic trough collectors (PTCs), which have recently received significant attention, face similar challenges. The current work presents an extensive review of the PTC systems comparing recent and past technologies, which are widely being used to improve and enhance the thermal and optical efficiencies. Furthermore, the techniques used for single and two-phase flow modeling in numerical simulations, design variables, and experimental processes have been discussed in detail. The article also presents different numerical methods and analytical approaches of implementing the nonuniform solar distribution with different design parameters. Four main technologies are comprehensively addressed to effectively enhance the thermal performance of the PTCs; changing working heat transfer fluids, replacing the working fluids by nanofluids (single and hybrid) that have higher thermal-physical properties than those of base working fluids, inserting different tabulators with various design configurations, and finally combining the advantages of nanofluids and swirl generators in the same application. The article also critically summarizes the studies investigating the enhancement of thermal performance: use of novel design of PTCs and passive heat transfer enhancement techniques. Finally, a wide range of numerical and experimental studies are proposed for the future work related to the aforementioned main technologies. K E Y W O R D Sheat transfer enhancements, nanofluids, parabolic trough solar collectors, solar thermal energy, tabulators, thermal and optical performances

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Experimental analysis applied to an evacuated tube solar collector equipped with parabolic concentrator using multilayer graphene-based nanofluids

Cited by 56 publications

References 51 publications

An updated review of nanofluids in various heat transfer devices

An updated review of nanofluids in various heat transfer devices

State-of-the-art review on water-based nanofluids for low temperature solar thermal collector application

An extensive review of various technologies for enhancing the thermal and optical performances of parabolic trough collectors

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