Effects of porous material and nanoparticles on the thermal performance of a flat plate solar collector: An experimental study

Jouybari, H. Javaniyan; Saedodin, Seyfolah; Zamzamian, A.; Nimvari, Majid Eshagh; Wongwises, Somchai

doi:10.1016/j.renene.2017.07.008

Cited by 129 publications

(42 citation statements)

References 39 publications

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“…In the case of Fe 3 O 4 nanoparticle, the density, specific heat, and thermal conductivity are 5200 kg/m 3 , 670 J/kg•K, and 80.4 W/m•K, respectively. The density and specific heat of the MWCNT and Fe 3 O 4 nanofluid used in this study can be expressed by Equations (2) and (3) [32,33]:…”

Section: Experimental Procedures and Efficiency Calculationmentioning

confidence: 99%

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

2020

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This study experimentally investigated the performance characteristics of water and MWCNT/Fe3O4 binary nanofluid as a working fluid in a flat plate and vacuum tube solar collectors. As a result, the highest efficiency was 80.3% when 0.005 vol.% MWCNT/0.01 vol.% Fe3O4 binary nanofluid was applied to the flat plate solar collector, which was a 17.6% increase in efficiency, compared to that when water was used. In the case of the vacuum tube solar collector, the highest efficiency was 79.8%, which was 24.9% higher than when water was applied. Besides, when the mass flux of MWCNT/Fe3O4 binary nanofluid was changed from 420 to 598 kg/s·m2, the maximum efficiencies of the flat plate and vacuum tube solar collectors were increased by 7.8% and 8.3%, respectively. When the MWCNT/Fe3O4 binary nanofluid was applied to the vacuum tube solar collector, the efficiency improvement was much more significant, and the high performance could be maintained for wide operating conditions, compared with the flat plate solar collector.

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Section: Experimental Procedures and Efficiency Calculationmentioning

confidence: 99%

“…To increase the cost-effectiveness of solar collectors by enhancing their efficiency, Jouybari et al [2] experimentally evaluated the performance of the flat plate solar collector when porous channels filled with SiO 2 /water nanofluids were applied. The thermal efficiency increased by 6%-8% by increasing the volume concentration.…”

Section: Introductionmentioning

confidence: 99%

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

2020

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“…In general, benefiting from porous materials with high thermal conductivity can lead to increased heat mixing, resulting in increased heat transfer rate and better efficiency in solar collectors (non‐direct radiation absorption through the surface absorber). To enhance the heat transfer using porous media, numerous numerical and experimental studies have focused on the use of porous materials in flat plate and parabolic collectors. For instance, Saedodin et al experimentally and numerically examined the effect of metallic foam (partially/totally filled) on the performance of an FPSC.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of a direct absorption solar collector using copper oxide porous foam and nanofluid

Esmaeili

Karami

Delfani³

2020

Int J Energy Res

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The current research proposes the idea of using water-saturated metal oxide foams and water-based nanofluids as solar absorber in the direct absorption solar collectors (DASCs). Specifically, the novel solar collector design utilizes copper oxide (CuO) porous foam and nanoparticle with high optical properties and is expected to have enhanced thermal performance than the conventional collectors utilizing pure water. The finite volume technique is used to solve the governing equations of flow and heat transfer in the radiative participating media. Also, to establish the reliability and accuracy of numerical solutions, the obtained results are compared with the corresponding numerical and experimental data. The computations are carried out for different nanoparticle volume fractions, foam pore sizes, working fluid mass flow rates, and both porous layer thicknesses and positions (inserted at the lower or upper wall of the collector). It is found that the efficiency of DASC partially/fully filled with metal oxide foam is maximized when the collector is completely filled with it. Compared with the water flow, the numerical results show that the collector efficiency using CuO nanofluid and metal oxide foam is improved by up to 26.8% and 23.8%, respectively. Moreover, considering the second law of thermodynamics, the use of CuO nanofluids in the DASC seems to be more effective than the use of CuO porous foam. K E Y W O R D Sdirect absorption solar collector, efficiency, metal oxide foam, nanofluid, second law of thermodynamics

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“…Gencet al [20]did experimental research on solar collector for finding thermal performance by using Al 2 O 3 /Water nanofluid, result found 74.39% of maximum collector efficiency with 3% volume concentration in the month of July. Jouybariet al [21]study the effect of different types of nanoparticles and various porous channels in the field of FPSC. He reported that the thermal conductivity has a considerable improvement in thermal performance using SiO 2 /deionized water nanofluids in FPSC as compare to other conventional nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Particle Optimization of Ceo2/Water Nanofluids in Flat Plate Solar Collector

Sharma,

Tiwari,

Tiwari

et al. 2019

IJEAT

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The present research focuses on the role of CeO 2 /water nanofluid for estimating the performance of flat plate solar collector in respect of energetic and exergetic performance. Based on our experimental findings on varying mass flow rate, the present analysis focuses on a wide range of concentrations to find optimum volume concentration for which thermal performance is maximum. CeO 2 /water nanofluid exhibits high thermal conductivity improvement (~41.7%at 1.5% volume concentration) and comparatively lower dynamic viscosity. Performance evaluation of flat plate collector is based on first law analysis and qualitative nature of energy flow based on second law analysis. Experiments indicate that for~1.0% particle volume concentration at a mass flow rate of 0.03 kg/s, maximum collector efficiency is obtained up to 57.1% instead of water as the base fluid. Exergetic efficiency observed 84.6%at optimum concentration (~1.0% particle volume) of nanofluid at0.01 kg/s flow rate.

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Effects of porous material and nanoparticles on the thermal performance of a flat plate solar collector: An experimental study

Cited by 129 publications

References 39 publications

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

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

Performance enhancement of a direct absorption solar collector using copper oxide porous foam and nanofluid

Particle Optimization of Ceo2/Water Nanofluids in Flat Plate Solar Collector

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