Economic Analysis of Flat-Plate and U-Tube Solar Collectors Using an Al2O3 Nanofluid

Kang, Woobin; Shin, Young‐Han; Cho, Honghyun

doi:10.3390/en10111911

Cited by 51 publications

(12 citation statements)

References 32 publications

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“…The enhancement of total collector efficiency gained from MgO-MWCNTs hybrid NF was higher by 25.1 % and 16.28 % when compared with the case of water and MgO/water NF, respectively. More investigations on the thermal performance of NFs employed for FPSCs are summarized in Table 2 [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77].…”

Section: Application Of Nfs To Enhance Performance Of Fpscsmentioning

confidence: 99%

Single and Hybrid Nanofluids to Enhance Performance of Flat Plate Solar Collectors: Application and Obstacles

Al-Yasiri

Szabó

Arıcı

2020

Period. Polytech. Mech. Eng.

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Solar energy represents the best alternative for traditional energy sources used in many thermal energy systems. Among solar thermal systems, Flat Plate Solar Collectors (FPSCs) are the most utilized type implemented in low and medium-level thermal domestic applications. Recently, the usage of nanofluids (NFs) to enhance FPSCs is one of the newest technologies that has drawn the attention of researchers to improve the overall thermal efficiency of solar systems. This paper briefly reviews the recent studies carried on thermal performance enhancement of FPSCs by implementing NFs (single and hybrid NFs) considering the main influential parameters such as particle concentration, particle size, and collector area. Finally, the main obstacles reported by the researchers such as the instability, viscosity, concentration limit, corrosion effect and others are identified, which is believed to be useful for interested newcomers in this research area. Based on the studies investigated in this paper, NFs, even under low concentrations, can remarkably improve the energetic and exergetic efficiency of FPSCs.

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Section: Application Of Nfs To Enhance Performance Of Fpscsmentioning

confidence: 99%

Single and Hybrid Nanofluids to Enhance Performance of Flat Plate Solar Collectors: Application and Obstacles

Al-Yasiri

Szabó

Arıcı

2020

Period. Polytech. Mech. Eng.

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“…Taylor et al [18,19] investigated the effectiveness of the concentrating parabolic solar collector using Al 2 O 3 nanofluid based on Therminol VP-1 and presented a 10% higher efficiency than water. Furthermore, Kang et al [20] reported that the effectiveness of flat plate and U-tube solar collectors of Al 2 O 3 nanofluid was 14.8% and 10.7% higher than that of water, respectively. With the use of coal, CO 2 generation, and SO 2 production could reduce the solar collector efficiency, when 50 flat plate solar collectors using Al 2 O 3 nanofluid were used for one year.…”

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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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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“…They reported that the value of the heat transfer coefficient was changed according to the concentration of the nanoparticles, and the mass concentration corresponding to the optimal heat transfer improvement was 1.2%. Kang et al [24] conducted an economic analysis of flat-plate and U-tube solar collectors with nanofluid (Al 2 O 3 /water). The flat-plate and U-tube solar collectors using nanofluid with a nanoparticle size of 20 nm and a concentration of 1.0 vol% had 14.8% and 10.7% higher thermal efficiency values, respectively, compared with utilizing water as the working fluid.…”

Section: Introductionmentioning

confidence: 99%

Efficiency Improvement of a Photovoltaic Thermal (PVT) System Using Nanofluids

2019

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Many studies and considerable international efforts have gone into reducing greenhouse gas emissions. This study was carried out to improve the efficiency of flat-plate photovoltaic thermal (PVT) systems, which use solar energy to produce heat and electricity simultaneously. An efficiency analysis was performed with various flow rates of water as the working fluid. The flow rate, which affects the performance of the PVT system, showed the highest efficiency at 3 L/min compared with 1, 2, and 4 L/min. Additionally, the effects of nanofluids (CuO/water, Al2O3/water) and water as working fluids on the efficiency of the PVT system were investigated. The results showed that the thermal and electrical efficiencies of the PVT system using CuO/water as a nanofluid were increased by 21.30% and 0.07% compared to the water-based system, respectively. However, the increase in electrical efficiency was not significant because this increase may be due to measurement errors. The PVT system using Al2O3/water as a nanofluid improved the thermal efficiency by 15.14%, but there was no difference in the electrical efficiency between water and Al2O3/water-based systems.

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Economic Analysis of Flat-Plate and U-Tube Solar Collectors Using an Al2O3 Nanofluid

Cited by 51 publications

References 32 publications

Single and Hybrid Nanofluids to Enhance Performance of Flat Plate Solar Collectors: Application and Obstacles

Single and Hybrid Nanofluids to Enhance Performance of Flat Plate Solar Collectors: Application and Obstacles

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

Efficiency Improvement of a Photovoltaic Thermal (PVT) System Using Nanofluids

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