Long-Term Performances and Technoeconomic and Environmental Assessment of Al2O3/Water and MWCNT/Oil Nanofluids in Three Solar Collector Technologies

Harrabi, Intissar; Hamdi, Mohamed; Hazami, Majdi

doi:10.1155/2021/6461895

Cited by 7 publications

(3 citation statements)

References 53 publications

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“…Harrabi et al [98], examined a techno-economic evaluation of three different heating technologies using a hybrid of aluminum oxide Al2O3/water and MWCNT/water nanofluids. The experimental results show that using hybrid nanofluids improves solar water performance and significantly reduces the payback period.…”

Section: Figure 10 Hybrid Nanofluid Applicationsmentioning

confidence: 99%

Hybrid Technologies for Water Heating Applications: A Review

Okubanjo

Patrick

2024

Gazi University Journal of Science

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The global energy deficit is currently a critical issue in the energy sector. As a result, the rising energy demand increases the consumption of conventional fossil fuels, contributing to the climate crisis and greenhouse gas emissions. Therefore, the over-reliance on fossil-fuel-based energy necessitates the development of a sustainable energy system to meet the lingering heat demand. Hence, renewable energy and efficient hybrid water heating technologies are viable options for achieving net-zero energy. The economic benefits of these hybrid technologies offer a promising prospect for widespread adoption in increasing hot water production in developing countries. These hybrid technologies are becoming increasingly popular for domestic thermal applications in remote areas to compensate for energy shortages. The paper aims to provide an overview of hybrid renewable water heating technologies, focusing on hybrid configurations, optimization techniques, mono-particle, and hybrid nanofluids and modelling. This paper also highlights the prospects of increasing such systems' economic attractiveness and public adoption.

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Section: Figure 10 Hybrid Nanofluid Applicationsmentioning

confidence: 99%

Hybrid Technologies for Water Heating Applications: A Review

Okubanjo

Patrick

2024

Gazi University Journal of Science

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“…Furthermore, depending on economic analysis, it is claimed that the Levelized cost of electricity for parabolic dish collector found 28.7% less for water-Al2O3 nanofluid in comparison to water-CuO nanofluid. The long-term performance assessment (in terms of produced thermal energy and solar fraction) of nanofluid based-solar collector for heating application is carried out by Harrabi et al (2021). TRANSYS (a commercial software) is used for estimating the performance assessment of the solar collector.…”

Section: Introductionmentioning

confidence: 99%

A novel design for solar collector used for water heating application having nanofluid as working medium: CFD modeling and simulation

Kumar

Kharub²,

Sharma

et al. 2022

Environ Sci Pollut Res

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A solar collector is a simple and cheap device that is capable of collecting and converting solar radiation into useful heat energy. The thermal performance of the solar collectors can be enhanced significantly with the suspension of nanoparticles in the base fluid. A novel design for a solarassisted water heater (SWH) is proposed in the current study and the effect of nanofluid has been investigated on the thermal efficiency of the SWH. The use of nanofluid is one of the prominent methods in comparison to other techniques for improving the performance of solar collectors and therefore, the base working fluid i.e. water is mixed with the alumina nanoparticles of average particle size of 30 nm, and they are assumed to be spherical. The flow and thermal characteristics of nanofluid through the solar water heater are simulated numerically with the help of the Eulerian-Eulerian two-phase model using the finite volume method (FVM). The commercial package i.e. ANSYS Fluent is used for modeling the problem under transient conditions with a pressure-based solver. In comparison to a conventional flat plate collector, the proposed solar water heater consists corrugated absorber-plate and the effect of radius of curvature of corrugation has been investigated on the heat transfer and collector efficiency. With the proposed design the heat transfer area available with the riser tubes increases remarkably and it leads to a 43% and 14% increase in heat transfer augmentation and collector efficiency, in comparison to the conventional solar water heater.

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“…In the current work, a nanofluid-based receiver is employed in a non-imaging concentrator CPC to enhance the thermal performance of the collector (Bhalla and Khullar, 2021). Harrabi et al (2021) investigated NFs in different solar collectors and found thermal performance enhancement by the use of NFs. The payback period was reduced by 0.62 years as compared to mineral thermal oil by using 0.3% MWCNT/oil in CPCs.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of compound parabolic solar collector using different nanofluids: An experimental study

et al. 2022

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The article reports an experimental study on a non-tracking compound parabolic collector (CPC) with nanofluid and hybrid nanofluids (NFs). An experimental setup was fabricated having a concentration ratio of 4.17, 0.828 m2 collector area, 24° of half acceptance angle, and an evacuated tube receiver having 1.85 m length. Fluids like water and NFs have been investigated in CPC performance improvement, but current research deals with NFs and hybrid NFs in a CPC as rare studies are found on a CPC using NFs. The 0.010 and 0.015 wt% concentration were used of nanofluids (NFs) which were silica/water + ethylene glycol (SiO2)/(H2O + EG), and hybrid nanofluids of magnesium oxide + carbon black/water (MgO + CB/H2O) and carbon black + graphene nanoplatelets/water (CB + GNPs/H2O) at flow rates of 0.020, 0.015, and 0.010 kg/s. The experimentation was performed under real climate conditions of Taxila, Pakistan, and solar irradiance and ambient temperature were measured to determine the performance of the CPC in comparison to a simple base fluid which was water. The experimental results revealed that a maximum temperature difference of 8.5°C with an around thermal efficiency of 38.51% was achieved for hybrid pair of MgO + CB at a flow rate of 0.010 kg/s and volumetric concentration of 0.015 wt%. The efficiency variation using NFs (SiO2/EG + H2O) varies from 12.8% to 59.1% from lowest 0.010 kg/s to highest 0.020 kg/s flow rates, and volumetric concentrations (0.010 and 0.015 wt%) of nanoparticles. For similar experimental conditions, efficiency variation for (CB + GNPs) pair varies from 14.2% to 65.6% for aforementioned conditions. Efficiency variation from 15.3% to 66.3% was attained using MgO + CB in the base fluid of water for said flow rates and volumetric concentrations of nanoparticles. In addition, an efficiency enhancement of 24.3%, 30.8%, and 31.5% was observed for SiO2/EG + H2O, CB + GNPs/H2O, and MgO + CB/H2O, respectively, at maximum flow rates and volumetric concentration of nanoparticles as compared to water. Therefore, the usage of hybrid-based NF in the CPC is beneficial in terms of efficiency enhancement, and it will bring young research workers to get deep into this field to bring revolution in the area of solar energy.

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Long-Term Performances and Technoeconomic and Environmental Assessment of Al2O3/Water and MWCNT/Oil Nanofluids in Three Solar Collector Technologies

Cited by 7 publications

References 53 publications

Hybrid Technologies for Water Heating Applications: A Review

Hybrid Technologies for Water Heating Applications: A Review

A novel design for solar collector used for water heating application having nanofluid as working medium: CFD modeling and simulation

Performance evaluation of compound parabolic solar collector using different nanofluids: An experimental study

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