Thermal Performance of Solar Tower Using Air as Heat Transfer Fluid under MENA Region Climate

Hassani, Sara El; Ouali, Hanane Ait Lahoussine; Raillani, Benyounes; Moussaoui, Mohammed Amine; Mezrhab, Ahmed; Amraqui, Samir

doi:10.1109/redec49234.2020.9163893

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…Authors of [21] examined the thermal performance of solar towers that use air as an HTF in a volumetric air receiver in the MENA region; their results showed that at the receiver level, the HTF could reach 1080 °C which can ensure good performance of the power plant. Authors of [20] investigated the thermal energy storage (TES) sys tem (honeycomb ceramic thermal energy storage) in a solar power plant that used air as HTF.…”

Section: Airmentioning

confidence: 99%

“…In addition, it has a high thermal conductivity, making sodium receivers best suited to hightemperature applications [11]. However, there is some issue related to using sodium as an HTF, including its reactivity with water and air [21,29], and its cost, as it's considered relatively expensive, especially if it's used in the storage system [30]. Properties of liquid sodium are found from (11) to ( 14) equations [22].…”

Section: Molten Saltsmentioning

confidence: 99%

“…) to(6), where T s is the air static tempera ture in Kelvin, density (ρ) in Kg/m 3 , specific heat (C p ) in J/Kg•K dynamic viscosity (µ) in Kg/m•s, thermal con ductivity (K) in W/m•K[21].…”

mentioning

confidence: 99%

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A review study on solar tower using different heat transfer fluid

Falahat

Gomaa

2022

TAPR

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The object of research is distinguishing the different heat transfer fluids (HTF) in concentrating solar power (CSP). CSP technologies are gaining more attention these years due to the fact that the world is facing significant problems, especially concerning environmental issues and the increasing electricity demand. The world countries are currently committed to mitigating climate change and limiting greenhouse gas emissions to keep the global temperature rising below 2 °C. As a result, renewable energy sources are required for power generation. One of the most widely used technologies is the solar tower, where mirrors reflect solar radiation into a central receiver on top of a tower that contains a working fluid known as heat transfer fluid. The HTF is one of the most important components in solar power tower plants used to transfer and store thermal energy to generate electricity. This study focuses on the HTF used in solar power towers and how it can affect the efficiency of the plant. The HTF discussed in this study are air, water/steam, molten salts, liquid sodium, and supercritical CO2. Among the review of HTFs in the solar tower system, the result of the research shows that the Air can reach the highest temperature while liquid sodium achieves the highest overall plant efficiency.

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Section: Airmentioning

confidence: 99%

Section: Molten Saltsmentioning

confidence: 99%

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A review study on solar tower using different heat transfer fluid

Falahat

Gomaa

2022

TAPR

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“…It has to operate at the lower temperature with low flux to avoid high external wall temperature, even though it has the ability to work at a high temperature range (e.g., 800-1000 • C). Air receivers, if it feasible, will require to make use of channels with enhanced heat transfer [48].…”

Section: Heat Transfer Fluid (Htf)mentioning

confidence: 99%

Comparison Between CSP Systems and Effect of Different Heat Transfer Fluids on the Performance

2022

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While fossil fuel sources have declined and energy demand has increased, in addition to the climate change crisis, the world turned to using renewable energies to get its energy. Concentrated solar power (CSP) is one of the main technologies used for this purpose. This study aims to compare the different concentrated solar power technologies in terms of their efficiency, cost, concentration ratio, and receiver temperature. Results showed that technologies were arranged according to temperatures from high to low as follows; the parabolic dish reflector, central receiver collector, linear Fresnel reflector, and parabolic trough collector. According to cost, the parabolic dish reflector has the highest price, while the linear Fresnel reflector has the lowest price. Also, the parabolic dish reflector has the highest efficiency among the others, followed by the central receiver collector, then the linear Fresnel reflector, and the parabolic trough collector respectively. Additionally; the study represented that point-focus devices have a high percentage of concentration ratio than line-focus devices. Finally, in order to exploit these sources throughout the day, it is recommended to use phase change materials to store the excess thermal energy as a positive and effective approach to solving the energy problems.

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“…Typically, natural gas-fired powered plants utilize air-fuel combustion (79% Nitrogen, 21% O2). In this study, we introduce pure oxygen as the only oxidant in the combustion process (Poživil et al 2014;Bedick et al 2017;EL Hassani et al 2020). In the combustor, under constant pressure, the fluid is mixed with a small quantity of methane and the heated flue gas obtained expands in the GT.…”

Section: System Configurationmentioning

confidence: 99%

An Enhanced Solar Hybrid Brayton and Rankine Cycles with Integrated Magnetohydrodynamic Conversion System for Electrical Power Generation

Ayeleso

Raji

2021

Int. J. Renew. Energy Dev.

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In many developing countries,the use of conventional power plants to generate electricity is not meeting the increasing demands. Therefore, it has become important to find sustainable alternatives. In the present study, a solar hybrid combined cycle power plant consisting of a solar thermal plant, large-scale gas and steam turbines, and a magnetohydrodynamic generator has been investigated under oxy-fuel combustion. The performance analysis of this system under fuel pressure rate varying from 10 to 25 bar was conducted using Cycle Tempo software. The analysis of the gas and steam combined cycle shows that the net powers and the net efficiencies obtained ranged from 98 MWe to 134 MWe and 30.5% to 40%, respectively. In addition, the integration of the magnetohydrodynamic generator to the combined cycle led to an increase in the overall power from 169 MWe to 205 MWe. Moreover, it is seen that the fuel mass rate (2.81 kg/s) obtained in the gas turbine system under oxy-fuel combustion is significantly reduced when compared to conventional systems. The incorporation of solar energy and oxy-fuel combustion in the gas turbine system has increased the combustor inlet and outlet temperature and reduced the fuel consumption. From these observations, the solar hybrid system proposed in this study does not only generates electric power but also reduce the turbine exhaust fumes and CO2 emissions, which is a key factor in minimizing environment pollution.

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Thermal Performance of Solar Tower Using Air as Heat Transfer Fluid under MENA Region Climate

Cited by 7 publications

References 4 publications

A review study on solar tower using different heat transfer fluid

A review study on solar tower using different heat transfer fluid

Comparison Between CSP Systems and Effect of Different Heat Transfer Fluids on the Performance

An Enhanced Solar Hybrid Brayton and Rankine Cycles with Integrated Magnetohydrodynamic Conversion System for Electrical Power Generation

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