Performance Evaluation of Flat Plate and Vacuum Tube Solar Collectors by Applying a MWCNT/Fe3O4 Binary Nanofluid

Lee, Minjung; Shin, Young‐Han; Cho, Honghyun

doi:10.3390/en13071715

Cited by 16 publications

(5 citation statements)

References 35 publications

(38 reference statements)

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“…Under varying mass fluxes (420 kg/s m 2 and 598 kg/s m 2 ) and mixing volume concentrations, the efficiency of MWCNT (0.003 vol% and 0.005 vol%) + Fe 3 O 4 (0.01 vol% and 0.015 vol%) NFs as working fluids was investigated in an FPSC [ 117 ]. They noticed that the collector efficiency was improved as the mass flux and MWCNT concentration increased and Fe 3 O 4 concentration decreased.…”

Section: Solar Energy Application Of Hybrid Nanofluidsmentioning

confidence: 99%

“…Lee et al [ 117 ] experimented the deployment of MWCNT (0.003 vol% and 0.005 vol%) + Fe 3 O 4 (0.01 vol% and 0.015 vol%) NFs as working fluids in a vacuum tube solar collector under varying mass fluxes (420 kg/s m 2 and 598 kg/s m 2 ) and mixing volume concentrations. The results demonstrated that the highest efficiency was achieved using MWCNT (0.005 vol%) + Fe 3 O 4 (0.01 vol%) NF and at a mass flux of 598 598 kg/s m 2 .…”

Section: Solar Energy Application Of Hybrid Nanofluidsmentioning

confidence: 99%

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Experimental Exploration of Hybrid Nanofluids as Energy-Efficient Fluids in Solar and Thermal Energy Storage Applications

et al. 2023

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In response to the issues of environment, climate, and human health coupled with the growing demand for energy due to increasing population and technological advancement, the concept of sustainable and renewable energy is presently receiving unprecedented attention. To achieve these feats, energy savings and efficiency are crucial in terms of the development of energy-efficient devices and thermal fluids. Limitations associated with the use of conventional thermal fluids led to the discovery of energy-efficient fluids called “nanofluids, which are established to be better than conventional thermal fluids. The current research progress on nanofluids has led to the development of the advanced nanofluids coined “hybrid nanofluids” (HNFs) found to possess superior thermal-optical properties than conventional thermal fluids and nanofluids. This paper experimentally explored the published works on the application of HNFs as thermal transport media in solar energy collectors and thermal energy storage. The performance of hybrid nano-coolants and nano-thermal energy storage materials has been critically reviewed based on the stability, types of hybrid nanoparticles (HNPs) and mixing ratios, types of base fluids, nano-size of HNPs, thermal and optical properties, flow, photothermal property, functionalization of HNPs, magnetic field intensity, and orientation, and φ, subject to solar and thermal energy storage applications. Various HNFs engaged in different applications were observed to save energy and increase efficiency. The HNF-based media performed better than the mono nanofluid counterparts with complementary performance when the mixing ratios were optimized. In line with these applications, further experimental studies coupled with the influence of magnetic and electric fields on their performances were research gaps to be filled in the future. Green HNPs and base fluids are future biomaterials for HNF formulation to provide sustainable, low-cost, and efficient thermal transport and energy storage media.

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Section: Solar Energy Application Of Hybrid Nanofluidsmentioning

confidence: 99%

Section: Solar Energy Application Of Hybrid Nanofluidsmentioning

confidence: 99%

Experimental Exploration of Hybrid Nanofluids as Energy-Efficient Fluids in Solar and Thermal Energy Storage Applications

et al. 2023

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“…Also, the maximum electrical and thermal efficiencies of the solar collector were 15% and 82% of the hybrid nanofluids at the peak of solar radiation, respectively Alawi et al (Alawi et al 2019 ) Experimental Pentaethylene glycol Treated graphene nanoplatelets 0.025 0.05 0.075 0.1 According to the outcomes, the collector efficiency used with the nanofluid went up by a maximum of 13.3% compared to water Rajput et al (Rajput et al 2019 ) Experimental Water Al 2 O 3 0.1 0.2 0.3 The outcomes displayed that with increasing the volume fraction, a 21.32% go up in collector efficiency was observed Hussein et al (Hussein et al 2020 ) Experimental Distilled water Hexagonal boron nitride (h-BN)-graphene nanoplatelets (CF-GNPs) with covalent functionalized-multi wall carbon nanotubes (CF-MWCNTs) 0.05 0.08 0.1 Solar collector efficiency has been got up by up to 85% with hybrid nanofluids. In addition, raising the concentration of nanoparticles increases the thermal energy and temperature of the fluid outlet Moravej et al (Moravej et al 2020 ) Experimental Water TiO 2 1 3 5 According to the results shown, with increasing solar radiation, the impact of adding nanoparticles increased so that the maximum collector efficiency when using nanofluid was reported to be approximately 78% Aghili and Kasaeian (Aghili Yegane and Kasaeian 2020 ) Numerical Water Hybrid nano (Al 2 O 3 /CuO) 0.05 0.1 The thermal efficiency went up using a combined nanofluid Lee et al (Lee et al 2020 ) Experimental Water MWCNT/Fe 3 O 4 0.003 0.0...…”

Section: Flat Plate Solar Collectors With Nanofluidsmentioning

confidence: 99%

Recent progress on flat plate solar collectors equipped with nanofluid and turbulator: state of the art

Zaboli,

Saedodin,

Ajarostaghi

et al. 2023

Environ Sci Pollut Res

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This paper reviews the impacts of employing inserts, nanofluids, and their combinations on the thermal performance of flat plate solar collectors. The present work outlines the new studies on this specific kind of solar collector. In particular, the influential factors upon operation of flat plate solar collectors with nanofluids are investigated. These include the type of nanoparticle, kind of base fluid, volume fraction of nanoparticles, and thermal efficiency. According to the reports, most of the employed nanofluids in the flat plate solar collectors include Al2O3, CuO, and TiO2. Moreover, 62.34%, 16.88%, and 11.26% of the utilized nanofluids have volume fractions between 0 and 0.5%, 0.5 and 1%, and 1 and 2%, respectively. The twisted tape is the most widely employed of various inserts, with a share of about one-third. Furthermore, the highest achieved flat plate solar collectors’ thermal efficiency with turbulator is about 86.5%. The review is closed with a discussion about the recent analyses on the simultaneous use of nanofluids and various inserts in flat plate solar collectors. According to the review of works containing nanofluid and turbulator, it has been determined that the maximum efficiency of about 84.85% can be obtained from a flat plate solar collector. It has also been observed that very few works have been done on the combination of two methods of employing nanofluid and turbulator in the flat plate solar collector, and more detailed work can still be done, using more diverse nanofluids (both single and hybrid types) and turbulators with more efficient geometries.

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“…Due to the escalating concern over the global climate and the pervasive issue of PM2.5 (particulate matter with a diameter of 2.5 μm or less) across the world, the majority of developed countries are actively considering the adoption of renewable energy policies 1,2 . Therefore, along with establishing and implementing energy policies that increase the use of green energy globally, activities related to these energies are also growing 3,4 …”

Section: Introductionmentioning

confidence: 99%

Evaluating the effect of using nanofluids on the parabolic trough collector's performance

Moosavian,

Hajinezhad,

Fattahi

et al. 2023

Energy Science & Engineering

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Solar collectors utilize solar energy, a sustainable and renewable source, to cater to both household and industrial needs. This paper investigated the usage of mono and binary nanoparticles in parabolic trough collectors. This paper used multiwalled carbon nanotube/Fe3O4 nanoparticles as the additives to the collector heat transfer fluid (in Syltherm 800 oil) and also evaluated the performance implications of energy systems in six scenarios. A MATLAB‐based computational model is provided to investigate the influence of employing binary nanoparticles on a solar collector's performance. The influence of nanoparticle modifications and volume percentages on energy, exergy, economic, and environmental aspects is studied. Finally, the impact of nanoparticles on each of the four mentioned areas is examined. At the same total energy rate, in the best case, adding 4% by volume of Fe3O4 (Case 2) to the base fluid increases the valuable energy rate absorbed from 7.32 kW in the base state to 7.50 kW (2.5%). The carbon dioxide produced in the system life cycle by using useful energy is called EnergoEnvironmental, and the carbon dioxide produced in the system life cycle by using useful exergy is called ExergoEnvironmental. At last, the calculation of the parameters EnergoEnviroEconomic and ExergoEnviroEconomic are done, the penalty policy is considered, and the calculations are generalized to solar collector power plants due to the carbon dioxide cost policies.

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Performance Evaluation of Flat Plate and Vacuum Tube Solar Collectors by Applying a MWCNT/Fe3O4 Binary Nanofluid

Cited by 16 publications

References 35 publications

Experimental Exploration of Hybrid Nanofluids as Energy-Efficient Fluids in Solar and Thermal Energy Storage Applications

Experimental Exploration of Hybrid Nanofluids as Energy-Efficient Fluids in Solar and Thermal Energy Storage Applications

Recent progress on flat plate solar collectors equipped with nanofluid and turbulator: state of the art

Evaluating the effect of using nanofluids on the parabolic trough collector's performance

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