Impacts of Ground Slope on Main Performance Figures of Solar Chimney Power Plants: A Comprehensive CFD Research with Experimental Validation

Cüce, Erdem; Cuce, Pınar Mert; Sen, Harun; Sudhakar, K.; Berardi, Umberto; Serencam, Uğur

doi:10.1155/2021/6612222

Cited by 22 publications

(8 citation statements)

References 27 publications

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“…[ [16][17] It is effective in the performance of the system on the ground such as chimney and collector. Raising the floor towards the chimney inlet for the reference system increases the power output by 17%.…”

Section: References the Influence Of Climatic And Geometric Parameter...mentioning

confidence: 99%

Collector factor in a solar chimney power plant: CFD analysis for the pilot plant in Manzanares

Cüce¹,

Sen²,

Cuce³

2023

energetika

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Solar chimneys are popular systems for their simple structures and clean energy generation. Thanks to its semi-permeable structure, the collector, one of the system’s basic elements, transfers solar radiation to the system. As a result of the heating of the system air under the collector by the solar radiation passing through the collector, it is directed to the high chimney in the collector centre. During the upward movement of the system air, it converts its energy into electricity via a turbine. Due to its large structure, estimating the amount of energy entering the collector system creates a great cost. The ideal size for the collector is therefore important. This study offers a recommendation for the ideal collector size for the pilot plant in Manzanares in terms of collector size and power output. While 59 kW power output is obtained with the system with a collector radius of 122 m in the reference case, it is observed that the power output increases by 78% when the collector radius is increased to 170 m and the collector area is doubled. The ratio of the ideal collector radius to the reference size for the pilot plant should be in the range of 1–1.5.

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Section: References the Influence Of Climatic And Geometric Parameter...mentioning

confidence: 99%

Collector factor in a solar chimney power plant: CFD analysis for the pilot plant in Manzanares

Cüce¹,

Sen²,

Cuce³

2023

energetika

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“…The optimal chimney height lengthens as the collector diameter rises 36 . The impact of collector slant and diameter is also investigated 32 , 37 – 42 . A sloped collector enhances the performance of the plant apart from the collector diameter.…”

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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“…Sloping ground is found a key solution to improve the turbulent effects inside the plant, thus to enhance the electrical power output. Cuce et al, [15] have analysed influence of area ratio of the chimney on main performance parameters of solar chimney power plants (SCPP) through a justified 3D axisymmetric CFD model. The results reveal that area ratio plays a vital role in performance of SCPP.…”

Section: Introductionmentioning

confidence: 99%

The Effect of The Inclusion of The Secondary Roof Under the Main Roof on Performance of Chimney Solar Power Plants

Belkacem

2022

ARFMTS

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In this work the effect of the inclusion a second roof on the power output of chimney solar power plant (SCPP) were investigated numerically through analytical model. The analytical model presented in this work based on energy balance equations and mass conservation equation at steady state. In second step, the proposed analytical model is then used to estimate the annual electricity production in Sétif, a region of Algeria. For the position of the sun in Setif is 36.19 degrees longitude and 5.41 degrees latitude. It appears from results obtained that the efficiency is increased by 28.7 % for the chimney solar power plant (SCPP) with the secondary roof compared to chimney solar power plant (SCPP) without second roof. It was also concluded that there is an optimal height of the second roof for the power output of chimney solar power plant (SCPP) to remain maximum. It is noted that the energy production increases with the increase in radiation and ambient temperature. However, the solar irradiation is the dominant factor on the electricity production of the chimney solar power plant, compared to the ambient temperature. The results obtained are in good agreement with the experimental results of a prototype plant in MANAZANARES.

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Impacts of Ground Slope on Main Performance Figures of Solar Chimney Power Plants: A Comprehensive CFD Research with Experimental Validation

Cited by 22 publications

References 27 publications

Collector factor in a solar chimney power plant: CFD analysis for the pilot plant in Manzanares

Collector factor in a solar chimney power plant: CFD analysis for the pilot plant in Manzanares

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

The Effect of The Inclusion of The Secondary Roof Under the Main Roof on Performance of Chimney Solar Power Plants

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