Design optimization of a solar tower power plant heliostat field by considering different heliostat shapes

Belaid, Abdelfetah; Filali, Abdelkader; Gama, Amor; Bezza, B.; Arrif, Toufik; Bouakba, Mustapha

doi:10.1002/er.5772

Cited by 23 publications

(10 citation statements)

References 51 publications

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“…As a result, enhancement and optimization of a CSP system's efficiency is very critical due to its enormous costs. To that effect, choosing an appropriate geometrical heliostat characteristics during design can reduce the overall cost of the SPT [43]. The NREL's Solar Power Tower Integrated Layout and Optimization Tool (SolarPILOT™) software handles the heliostat field layout by arranging the layout of the heliostat field by separately characterizing every potential heliostat position.…”

Section: Modeling Of the Power Plantmentioning

confidence: 99%

Effect of Two Different Heat Transfer Fluids on the Performance of Solar Tower CSP by Comparing Recompression Supercritical CO2 and Rankine Power Cycles, China

et al. 2021

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China intends to develop its renewable energy sector in order to cut down on its pollution levels. Concentrated solar power (CSP) technologies are expected to play a key role in this agenda. This study evaluated the technical and economic performance of a 100 MW solar tower CSP in Tibet, China, under different heat transfer fluids (HTF), i.e., Salt (60% NaNO3 40% KNO3) or HTF A, and Salt (46.5% LiF 11.5% NaF 42% KF) or HTF B under two different power cycles, namely supercritical CO2 and Rankine. Results from the study suggest that the Rankine power cycle with HTF A and B recorded capacity factors (CF) of 39% and 40.3%, respectively. The sCO2 power cycle also recorded CFs of 41% and 39.4% for HTF A and HTF B, respectively. A total of 359 GWh of energy was generated by the sCO2 system with HTF B, whereas the sCO2 system with HTF A generated a total of 345 GWh in the first year. The Rankine system with HTF A generated a total of 341 GWh, while the system with B as its HTF produced a total of 353 GWh of electricity in year one. Electricity to grid mainly occurred between 10:00 a.m. to 8:00 p.m. throughout the year. According to the results, the highest levelized cost of energy (LCOE) (real) of 0.1668 USD/kWh was recorded under the Rankine cycle with HTF A. The lowest LCOE (real) of 0.1586 USD/kWh was obtained under the sCO2 cycle with HTF B. In general, all scenarios were economically viable at the study area; however, the sCO2 proved to be more economically feasible according to the simulated results.

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Section: Modeling Of the Power Plantmentioning

confidence: 99%

Effect of Two Different Heat Transfer Fluids on the Performance of Solar Tower CSP by Comparing Recompression Supercritical CO2 and Rankine Power Cycles, China

et al. 2021

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“…Multi-tower solar arrays have been proposed [57] as well as optimum packing hexagonal heliostats [58], while a few percent improvement in field efficiency was reported by moving from square to circular heliostats [59]. The heliostat shape however should additionally consider wind loads and turbulence to drop the cost below 100 $/m 2 [60].…”

Section: Advances In Heliostat Layoutsmentioning

confidence: 99%

Concentrating Solar Power Advances in Geometric Optics, Materials and System Integration

Arnaoutakis

Katsaprakakis

2021

Energies

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In this paper, the technological advances in concentrating solar power are reviewed. A comprehensive system approach within this scope is attempted to include advances of highly specialized developments in all aspects of the technology. Advances in geometric optics for enhancement in solar concentration and temperature are reviewed along with receiver configurations for efficient heat transfer. Advances in sensible and latent heat storage materials, as well as development in thermochemical processes, are also reviewed in conjunction with efficient system integration as well as alternative energy generation technologies. This comprehensive approach aims in highlighting promising concentrating solar power components for further development and wider solar energy utilization.

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“…The function of the heliostat is to reflect the sunlight into the thermal receiver located at the tower top. [6,7] The heliostat is the fundamental part of a solar thermal power generation system, and it costs roughly 50% of the total. [8,9] Large-scale solar thermal power stations are generally constructed in open-air areas with an annual sunlight percentage over 90% to suit the needs of the production process.…”

Section: Introductionmentioning

confidence: 99%

Transient Evaluation of Wind‐Induced Vibration Response of Heliostat Under Downburst

Xing

et al. 2023

Energy Tech

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As the region with the highest amount of solar radiation, Qinghai–Tibet Plateau has the highest frequency of thunderstorms in China. Downburst generated in thunderstorm can cause high‐intensive wind near the ground, which is a critical threat to heliostats. Herein, the impact of the wind loads on the heliostat response under downburst is investigated using a proven finite‐element model and the influence is also compared with that under atmospheric boundary layer (ABL) wind. The results demonstrate that the downburst development process, the movement of the storm center, and the heliostat's elevation angle are highly associated with the wind‐induced response characteristics of the heliostat under downburst. The maximum displacement and stress of the heliostat with different elevation angles under the downburst are significantly larger than those under ABL wind. Additionally, when the elevation angle of the heliostat is 30°, the maximum value of the mirror's first principal stress under downburst is 1.88 times greater than it is under ABL wind. Therefore, the impact of wind‐induced vibration caused by downburst is necessarily considered on the safety of heliostat in Qinghai‐Tibet Plateau with abundant solar energy resources and high incidence of downbursts.

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Design optimization of a solar tower power plant heliostat field by considering different heliostat shapes

Cited by 23 publications

References 51 publications

Effect of Two Different Heat Transfer Fluids on the Performance of Solar Tower CSP by Comparing Recompression Supercritical CO2 and Rankine Power Cycles, China

Effect of Two Different Heat Transfer Fluids on the Performance of Solar Tower CSP by Comparing Recompression Supercritical CO2 and Rankine Power Cycles, China

Concentrating Solar Power Advances in Geometric Optics, Materials and System Integration

Transient Evaluation of Wind‐Induced Vibration Response of Heliostat Under Downburst

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