Energy and exergy analysis of a flat plate solar collector using different sizes of aluminium oxide based nanofluid

Said, Zafar; Saidur, R.; Rahim, N.A.

doi:10.1016/j.jclepro.2016.05.178

Cited by 140 publications

(29 citation statements)

References 43 publications

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“…Solar energy is a promising renewable energy source in order to face critical energy problems of our society such as the high electricity cost, global warming, and fossil fuel depletion. 1,2 Cogeneration and polygeneration systems are also usual choices in order to achieve high overall performance due to the simultaneous production of many useful outputs (e.g., heating, cooling, electricity, and fresh water). 3,4 So the utilization of solar irradiation into cogeneration systems can be a sustainable way of satisfying the increasing energy demand with a clean and efficient way.…”

Section: Introductionmentioning

confidence: 99%

Design of a solar‐driven cogeneration system using flat plate collectors and evacuated tube collectors

Bellos

Tzivanidis

2019

Int J Energy Res

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Summary The objective of this work is the investigation of a novel solar‐driven cogeneration system, which combines both flat plate collectors (FPCs) and evacuated tube collectors (ETCs). This system includes an organic Rankine cycle in order to produce electricity and heat exchangers in order to produce useful heating at 50°C, which is a usual temperature level for domestic applications. The combination of FPCs and ETCs aims to reduce the investment cost and so to design a cost‐effective solar‐driven cogeneration system. The FPCs are located before the ETCs in order to work at lower temperature levels and the ETC at higher temperature levels, a design which provides optimum compatibility between temperature levels and solar thermal efficiency values. The system is examined energetically, exergetically, and financially. The power production is selected at 5 kW, while the heating production is studied from 5 kW up to 35 kW. According to the final results, it is found that in the typical case of 20‐kW heating production, the simple payback period of the system is around 11 years, while the energy and exergy efficiency at 16% and 4%, respectively. The analysis is conducted with a developed model in Engineering Equation Solver under steady‐state conditions.

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Section: Introductionmentioning

confidence: 99%

Design of a solar‐driven cogeneration system using flat plate collectors and evacuated tube collectors

Bellos

Tzivanidis

2019

Int J Energy Res

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“…The results showed that the SiO2/water nanofluid enhanced the thermal efficiency and temperature performance compared with pure water. The impact of particle size, concentration and flow rate on the performance of solar collector was experimentally performed by Said et al (2016). Their results confirmed that 13 nm 23 Al O nanofluid enhanced the thermal conductivity and efficiency compared with 20 nm Al2O3 nanofluid and water.…”

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confidence: 68%

The impacts of thermal radiation and viscous dissipation for the Falkner-Skan flow past a wedge in the presence of nanoparticles suspended in a viscous fluid

Afify

2017

JTST

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The influences of thermal radiation and non -uniform heat source/sink in Falkner-Skan flow and heat transfer characteristics of nanofluids have been investigated. Three different types of nanoparticles, namely Copper, Cu, Alumina 2 3Al O , and Titania 2 TiO are considered by using water-based fluid with Prandtl number Pr = 6.2. The partial differential equations are transformed into the system of ordinary differential equations by applying similarity transformations which is then solved numerically. The result revealed that utilizing Cu-water nanofluid enhanced the heat transfer rate in comparison with 2 3Al O -water and 2 TiO -water nanofluids. The heat transfer rate is significantly boosted with an increase in the radiation parameter. Further, the opposite trend is observed with an increase in source/sink parameters and Eckert number.

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“…Said et al investigated using of nanoparticles in Heat Transfer Fluid (HTF). They concluded with nanoparticles, the temperature difference between the HTF and the environment decreases and exergy destruction in the collector is reduced . The aim of this research is to perform a dynamic simulation and Exergy analysis on SEGS VI power plant.…”

Section: Introductionmentioning

confidence: 99%

Exergy analysis of a hybrid solar‐fossil fuel power plant

Vakilabadi

Bidi

Najafi

et al. 2019

Energy Science & Engineering

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In this study, exergy analysis, energy analysis, and mathematical modeling are performed in a 35 MW solar‐fossil fuel power plant. The losses of exergy and energy in different components and also changes of the efficiency of exergy and energy are analyzed at a specific day, 20th June. The assumed power plant in this study is Solar Electric Generating Station VI (SEGS VI), located in California's Mojave Desert. A parametric study, under different working conditions, including different working pressures, temperatures, collector output temperature, steam flow rate, and heat transfer fluid (HTF) flow rate is studied and the effect of variation of parameters on the performance of the plant is investigated. Authors found that, the maximum exergy loss happens in the collector and the maximum energy loss occurs in the condenser. Energy analysis shows that 47% of the total loss energy in the cycle happens in the condenser, as the main component that wastes energy. From exergy analysis, the collector and then boiler are the main components wasting exergy where 68.32% of total exergy loss occurs in these two components in hybrid mode (solar‐fossil fuel). Exergy and Energy efficiency variations throughout the day show that minimum exergy efficiency (32.7%) and maximum energy efficiency (23%) occurs at 12 am. Exergy efficiency variation versus turbine inlet pressure shows that the maximum exergy efficiency (26%) accure at 95 bar. The changes of the absorbed heat and solar irradiation of the 20th of June shows a good agreement with the measured data in validated reference.

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Energy and exergy analysis of a flat plate solar collector using different sizes of aluminium oxide based nanofluid

Cited by 140 publications

References 43 publications

Design of a solar‐driven cogeneration system using flat plate collectors and evacuated tube collectors

Design of a solar‐driven cogeneration system using flat plate collectors and evacuated tube collectors

The impacts of thermal radiation and viscous dissipation for the Falkner-Skan flow past a wedge in the presence of nanoparticles suspended in a viscous fluid

Exergy analysis of a hybrid solar‐fossil fuel power plant

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