Experimental and numerical investigations on the effect of Al2O3/TiO2H2O nanofluids on thermal efficiency of the flat plate solar collector

Farajzadeh, Ehsan; Movahed, Saeid; Hosseini, Reza

doi:10.1016/j.renene.2017.10.102

Cited by 134 publications

(30 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such systems include flat plate and volumetric absorption solar collectors. Applications of NPs and NFs in flat plate solar collectors are investigated [126][127][128][129][130], including experimental evaluation of flat plate solar collector [127]. Effect of titanium dioxide/water NF use on thermal performance of the flat plate solar collector has been investigated [128].…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

“…Effect of titanium dioxide/water NF use on thermal performance of the flat plate solar collector has been investigated [128]. Experimental and numerical investigations of the effect of Al 2 O 3 /TiO 2 -H 2 O NFs on thermal efficiency of the flat plate solar collector have been carried out [129].…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

“…The optimization problems of a direct absorption solar collector with blended plasmonic NFs and effect of plasmonic nanoshell-based NF on efficiency of direct solar thermal collector were discussed [132,133]. The use of various NPs in flat plate and direct absorption solar collectors leads to increasing their thermal efficiency up to 10-15% in comparison with their collectors without NPs [126][127][128][129][130][131][132][133][134].…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

See 2 more Smart Citations

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Pustovalov

2019

SN Appl. Sci.

View full text Add to dashboard Cite

This review presents a comprehensive analysis of the recent studies and advances related to optical properties of nanoparticles, their heating under solar irradiation and heat conversion, relevant equations and theoretical modeling approaches and application of nanofluids for direct absorption of solar radiation. A lot of papers including theoretical, numerical and experimental up-to-date works are reviewed and summarized carefully to give a panoramic overview of the role of the nanoparticles. Modern nanotechnology can produce various homogeneous and hybrid (core-shell) nanoparticles from different metals and materials which have unique optical and thermal properties. It was found that the application of nanoparticles selected on the basis of the presented analysis has shown remarkable properties and offers unique advantages over conventional fluids in optical absorption, thermo-physical and heating properties of nanofluids. This fact can play a crucial role in increasing the efficiency of solar energy harvesting.

show abstract

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

See 1 more Smart Citation

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Pustovalov

2019

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…Besides nanofluid is more effective on the collector efficiency at below 0.016 kg/s. Many experimental investigations carried out to evaluate properties of solar collectors with nanofluids such as efficiency, thermal conductivity and heat transfer coefficient [13][14][15]. Ozsoy and Corumlu [13] carried out an experimental analysis to evaluate thermal efficiency of a thermosiphon heat pipe evacuated tube solar collector using silver-water nanofluid for commercial applications.…”

Section: Introductionmentioning

confidence: 99%

“…Other interesting result is that the effect of nanofluid on thermal efficiency is greater at high temperatures. Farajzadeh et al [15] carried out experimental and numerical investigations on the effect of Al 2 O 3 /TiO 2 -water based nanofluids on thermal efficiency of the flat plate solar collector. They considered three different volume rates: 1.5 l/m, 2.0 l/m and 2.5 l/m.…”

Section: Introductionmentioning

confidence: 99%

Application of nanofluids in solar cooling system: Dynamic simulation by means of TRNSYS software

Buonomo¹,

Cascetta²,

Cirillo³

et al. 2018

MMC_B

View full text Add to dashboard Cite

Convective heat transfer can be enhanced passively by using fluids with high value of the thermal conductivity. An innovative method of enhancement of thermal conductivity of base fluids is to insert nanoparticles. In recent years, nanofluids and their possible applications have been extensively studied. In this study, simulation based on a performance analysis of a solar cooling system is carried out by means of TRNSYS. First the analysis determines the peak energy demand for a building located in Naples. Beside, for the same configuration of solar system both pure water and Al2O3/water based nanofluids are considered as working fluids. Different values of volume nanoparticles concentrations, equal to 3%, and 6%, are investigated. The configuration is fully modelled in TRNSYS and dynamic simulations are run for the entire year. Various performance factors such as useful energy gain from collector, solar fraction, primary energy savings and pumping consumption are evaluated. Simulations results demonstrate that for the whole summer season, using nanofluids as working fluid, always higher primary energy savings results. Besides, solar fraction, difference between nanofluids with nanoparticles concentration of 3% and 6% is estimated to be marginal. In terms of PEC and primary energy savings, nanofluids with nanoparticles concentration of 6% has presented higher values.

show abstract

Thermosyphon solar water heating system with Cu/water nanofluid and wire coil configurations: Efficiency, energy, economic, environmental, and heat transfer study

Sundar

Akanaw

Singh

et al. 2021

Env Prog and Sustain Energy

View full text Add to dashboard Cite

The techno-economical analysis such as collector size, weight, cost, embodied energy, and environmental aspects were performed for Cu/water nanofluid flow in flat plate collector with various kinds of wire coil configurations based on the collector efficiency. Results show, the collector thermal efficiency is augmented for Cu/water nanofluids rather than water in the collector. By using ϕ = 0.3% nanofluid in collector its thermal efficiency is 61.47% but with water it is 56.68%; the collector thermal efficiency is further enhanced to 68.48% at ϕ = 0.3% nanofluid with wire coil configuration of p/d = 1.79. The collector area is reduced to 2.76 m 2 for ϕ = 0.3% nanofluid but it is 3 m 2 for water in the collector; collector area is further lowered to 2.48 m 2 for ϕ = 0.3% nanofluid with wire coil configuration of p/d = 1.79. The Nusselt number raise is 20.46% and further rose to 46.23% for ϕ = 0.3% nanofluid with wire coil configuration of p/d = 1.79 against water. The penalty in friction factor is 1.24-and 1.44-times for ϕ = 0.3% nanofluid with and without wire coil configuration of p/d = 1.79 over the water.

show abstract

Experimental and numerical investigations on the effect of Al2O3/TiO2H2O nanofluids on thermal efficiency of the flat plate solar collector

Cited by 134 publications

References 18 publications

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Application of nanofluids in solar cooling system: Dynamic simulation by means of TRNSYS software

Thermosyphon solar water heating system with Cu/water nanofluid and wire coil configurations: Efficiency, energy, economic, environmental, and heat transfer study

Contact Info

Product

Resources

About