Comparative assessment of innovative methods to improve solar chimney power plant efficiency

Mehranfar, Sadegh; Gharehghani, Ayat; Azizi, Alireza; Andwari, Amin Mahmoudzadeh; Pesyridis, Apostolos; Jouhara, Hussam

doi:10.1016/j.seta.2021.101807

Cited by 24 publications

(10 citation statements)

References 188 publications

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“…At certain weather conditions, the x-axis in Figure 3 represents the data predicted from the current model, while the y-axis represents the estimated values using the models in Table 3. It can be observed that the predicted PV cell temperatures are in good agreement with the data obtained from the models in the literature; they are specifically closer to data generated from models (1) and ( 4). Based on the data given in Figure 3, it can be concluded that the predicted cell temperature is very close to models (1) and ( 4) with average errors of 2.1% and 2.4%, respectively, while the obtained numerical results are far from models ( 8) and ( 7) with average deviations of around 6% and 8%, respectively.…”

Section: Bi-facial Photovoltaic Cell Model Validationsupporting

confidence: 83%

See 1 more Smart Citation

Thermal comparison of mono-facial and bi-facial photovoltaic cells considering the effect of TPT layer absorptivity

Radwan

Mahmoud

Olabi

et al. 2023

International Journal of Thermofluids

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Section: Bi-facial Photovoltaic Cell Model Validationsupporting

confidence: 83%

“…The growth of electricity demand is a major factor that affects climate change due to the dependency on fossil fuels for power generation. This elevates the importance of utilizing renewable energy sources (RES) such as solar [1], wind [2], geothermal [3], bioenergy [4],…”

Section: Introductionmentioning

confidence: 99%

Thermal comparison of mono-facial and bi-facial photovoltaic cells considering the effect of TPT layer absorptivity

Radwan

Mahmoud

Olabi

et al. 2023

International Journal of Thermofluids

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“…Despite the simplicity in construction and principle, several issues exist, mostly the low efficiency of the plant. Apart from the material of the transparent cover and absorber plate, geometric parameters like collector diameter, collector inlet, chimney height, chimney diameter, and divergence influence the performance 5 . So far, the first plant is reported in Spain (Manazaranes) by Haaf et al 6 , 7 in 1982 for generating ~ 50 kW power.…”

Section: Introductionmentioning

confidence: 99%

An application of artificial neural network (ANN) for comparative performance assessment of solar chimney (SC) plant for green energy production

Mandal,

Biswas,

Manna

et al. 2024

Sci Rep

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This study aims to optimize the power generation of a conventional Manzanares solar chimney (SC) plant through strategic modifications to the collector inlet height, chimney diameter, and chimney divergence. Employing a finite volume-based solver for numerical analysis, we systematically scrutinize influential geometric parameters, including collector height (hi = 1.85 to 0.1 m), chimney inlet diameter (dch = 10.16 to 55.88 m), and chimney outlet diameter (do = 10.16 to 30.48 m). Our findings demonstrate that reducing the collector inlet height consistently leads to increased power output. The optimal collector inlet height of hi = 0.2 m results in a significant power increase from 51 to 117.42 kW (~ 2.3 times) without additional installation costs, accompanied by an efficiency of 0.25%. Conversely, enlarging the chimney diameter decreases the chimney base velocity and suction pressure. However, as turbine-driven power generation rises, the flow becomes stagnant beyond a chimney diameter of 45.72 m. At this point, power generation reaches 209 kW, nearly four times greater than the Manzanares plant, with an efficiency of 0.44%. Nevertheless, the cost of expanding the chimney diameter is substantial. Furthermore, the impact of chimney divergence is evident, with power generation, collector efficiency, overall efficiency, and collector inlet velocity all peaking at an outer chimney diameter of 15.24 m (corresponding to an area ratio of 2.25). At this configuration, power generation increases to 75.91 kW, approximately 1.5 times more than the initial design. Remarkably, at a low collector inlet height of 0.2 m, combining it with a chimney diameter of 4.5 times the chimney inlet diameter (4.5dch) results in an impressive power output of 635.02 kW, signifying a substantial 12.45-fold increase. To model the performance under these diverse conditions, an artificial neural network (ANN) is effectively utilized.

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“…The use of solar photoelectric stations (SPS) is especially relevant for remote rural areas, farms and agricultural enterprises, including pastures, farms and facilities located in mountainous areas (where there is a lot of light) and slope cultivated lands. At the same time, it is necessary to achieve the best competitive energy characteristics of the SPS [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…-use of solar cells (SE) with improved technical characteristics; -systems of continuous automatic tracking of solar photoelectric plants for the Sun; -system regulation of the maximum power according to the volt-ampere characteristic of solar photoelectric modules (SPM); -optimization of the size of the SPM and the shape of the receiver surface [2][3][4][5]. The efficiency of using solar energy in modern solar systems is determined by the features of their architecture, the orientation of the station, the position of its elements relative to the southern direction and the plane of the surface horizon, the choice of materials and engineering structures, including fences [6,7,10,12,13].…”

Section: Introductionmentioning

confidence: 99%

Improving the energy characteristics of a solar photoelectric station of spherical and cylindrical surface shapes for the power supply of remote rural areas and agricultural enterprises

Strebkov

Shogenov²,

Penjiyev³

et al. 2022

E3S Web Conf.

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One of the actual tasks of generating electricity is to increase the energy efficiency of solar photoelectric stations (SPS) in uneven lighting. The purpose of the work is to study the energy characteristics of the SPS under uneven lighting to improve the energy efficiency of solar power plants, including those for agro–industrial enterprises located and operating in remote rural areas, on sloping lands, mountainous and foothill terrain, where the efficiency of the SPS can be higher than on the plain due to a higher level of illumination. The methods of mathematical analysis with application of geometric optics, photoelectric conversion methods and construction physics in solar engineering are used. Analytical calculations were carried out to clarify the design parameters of the SPS that are made in the form of a sphere and a cylinder. The article presents the results of theoretical studies of the electrical characteristics of SPS made in the form of a sphere and a cylinder under uneven illumination of solar photoelectric modules (SPM). The relationship of electrical power and the number of SPS in the SPS is determined by the methods of mathematical statistics. As a result of studies of the electrical characteristics of SPS in uneven lighting, the following results were obtained: for SPS in the form of a sphere, small-area SPS have energy efficiency 32% more than large-area SPS; for SPS in the form of a cylinder of small-area SPS, energy efficiency increases by 19% compared to large-area SPS. The relationship between electrical power and the number of SPS was determined using the coefficient of determination, which is equal to: for a spherical surface - 36.2%, for a cylindrical one - 26.6%.

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Comparative assessment of innovative methods to improve solar chimney power plant efficiency

Cited by 24 publications

References 188 publications

Thermal comparison of mono-facial and bi-facial photovoltaic cells considering the effect of TPT layer absorptivity

Thermal comparison of mono-facial and bi-facial photovoltaic cells considering the effect of TPT layer absorptivity

An application of artificial neural network (ANN) for comparative performance assessment of solar chimney (SC) plant for green energy production

Improving the energy characteristics of a solar photoelectric station of spherical and cylindrical surface shapes for the power supply of remote rural areas and agricultural enterprises

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