Experimental investigation of stability and extinction coefficient of Al 2 O 3 –CuO binary nanoparticles dispersed in ethylene glycol–water mixture for low-temperature direct absorption solar collectors

Menbari, Amir; Alemrajabi, Ali Akbar; Ghayeb, Yousef

doi:10.1016/j.enconman.2015.11.034

Cited by 65 publications

(19 citation statements)

References 31 publications

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“…Taylor et al [16] devoted their research to spectroscopic measurements of extinction coefficients of nanofluids. Menbari et al [20][21][22] conducted an experimental and analytical study of the optical properties of binary nanofluids for direct absorption in solar systems. Luo et al [23] studied the performance of a nanofluid solar collector based on direct absorption collection to show that solar collector efficiency could be improved by up to about 2-25% as a result of the use of nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer analysis and the effect of CuO/Water nanofluid on direct absorption concentrating solar collector

Menbari

Alemrajabi

Rezaei

2016

Applied Thermal Engineering

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140

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Section: Introductionmentioning

confidence: 99%

Heat transfer analysis and the effect of CuO/Water nanofluid on direct absorption concentrating solar collector

Menbari

Alemrajabi

Rezaei

2016

Applied Thermal Engineering

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140

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“…Several researchers have investigated the use of nanofluids in flat plate solar collectors, evacuated tube solar collectors and other non-concentrating solar collectors [24][25][26][27][28][29][30][31][32][33].…”

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confidence: 99%

Thermal performance and entropy generation analysis of a high concentration ratio parabolic trough solar collector with Cu-Therminol®VP-1 nanofluid

Mwesigye

Huan

Meyer

2016

Energy Conversion and Management

202

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This paper presents results of a numerical study on the thermal and thermodynamic performance of a high concentration ratio parabolic trough solar collector using Cu- Above a certain Reynolds number, further increase in the Reynolds numbers makes the entropy generation higher than that of a receiver with only the base fluid. Key wordsConcentration ratio, entropy generation, nanofluid, parabolic trough receiver, thermal efficiency. †

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“…Results showed that up to 1.8% improvements in the thermal efficiency when using hybrid nanofluids while only 0.7% with single nanofluid. Menbari et al, Menbari and Alemrajabi, and Menbari et al studied experimentally the effect of (γ‐Al 2 O 3 + CuO) suspended in hybrid base fluids of water and EG with different volume fractions, different solar irradiance and different flow rates. They pointed out that the thermal efficiency was higher in the case of dispersing hybrid nanoparticles than using single nanoparticle.…”

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 investigation of stability and extinction coefficient of Al 2 O 3 –CuO binary nanoparticles dispersed in ethylene glycol–water mixture for low-temperature direct absorption solar collectors

Cited by 65 publications

References 31 publications

Heat transfer analysis and the effect of CuO/Water nanofluid on direct absorption concentrating solar collector

Heat transfer analysis and the effect of CuO/Water nanofluid on direct absorption concentrating solar collector

Thermal performance and entropy generation analysis of a high concentration ratio parabolic trough solar collector with Cu-Therminol®VP-1 nanofluid

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

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