Numerical–analytical assessment on Manzanares prototype

Fathi, Nima; Aleyasin, Seyed Sobhan; Vorobieff, Peter

doi:10.1016/j.applthermaleng.2016.03.133

Cited by 28 publications

(12 citation statements)

References 10 publications

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“…This jointly results in reduced collector efficiency. The predicted collector efficiency for the case of the Spanish prototype (with the 122‐m collector) is approximately 30.51%, which is close to the reported experimental value of ~30% 24,39 . The collector efficiency is only 10.84% when the collector radius increases to 572 m. When the other dimensional parameters are held constant, increasing the collector radius beyond a certain value will lead to a thermal equilibrium for the airflow and bring diminishing returns to the whole SCPP 40,41 .…”

Section: Parametric Sensitivitysupporting

confidence: 85%

Numerical investigation and multi‐objective thermo‐economic optimization of a solar chimney power plant

et al. 2021

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Summary This study was conducted to optimize a solar chimney power plant from the aspects of performance improvement and cost saving. Numerical simulation was performed for a Spanish prototype to investigate the parametric sensitivity of several key variables and identify a reasonable range for the variables as the constraints of the optimization. A multi‐objective optimization on the prototype was conducted using orthogonal design of experiments, response surface methodology, and the non‐dominated sorting genetic algorithm. The optimum chimney diameter tends to reach the upper bound of 30 m, while the optimum collector radius is almost uniformly distributed over the allowable range. The optimum range of the turbine pressure drop ratio is between 0.82 and 0.88 for the cases with a 200‐m high chimney. The optimized capital cost per unit power production ranges from 0.018 to 0.026 M€/kW, which is much less than 0.054 M€/kW of the Spanish prototype. Considering the output power and construction cost comprehensively, the Pareto solution set obtained from the optimization may provide a guide to the system design and operation.

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Section: Parametric Sensitivitysupporting

confidence: 85%

Numerical investigation and multi‐objective thermo‐economic optimization of a solar chimney power plant

et al. 2021

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“…The air flows toward the tower and drives the turbine. The main use of the solar chimney is power generation [1,2], but it can also be used for food drying [3][4][5]. Recently, some authors started to develop mathematical simulations to assess the viability of solar chimneys to be used combined with desalination systems, to simultaneously generate power and produce freshwater [6][7][8][9][10][11], as reviewed by [12,13].…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Small Solar Chimney

Silva

Maia

2020

Acta Polytech

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An optimization study to maximize the exergy efficiency of a small-scale solar chimney was carried out. Optimization variables include collector diameter (Dc), collector height (Hc), tower height (Ht), and tower diameter (Dt). Models from the literature were used to predict environmental and airflow parameters. Exergy efficiency and solar chimney efficiency were determined, on an hourly basis, for a one-year period. The model was simulated using the EES software. Two methods of optimization were used, the method of conjugate directions and the method of variable metric, both providing similar results. Results were compared to the results from an experimental prototype, and it was found that the energetic and exergetic efficiency were significantly improved. The analysis indicated that the height and diameter of the chimney and collector are the most important physical variables in the design of a solar chimney. For both methods, it was found that the maximum exergy efficiency was obtained with a collector height of 0.5 m, a collector diameter of 30 m, a tower diameter of 1 m, and a tower height of 17.8 – 18.8 m. The exergy efficiency was 44 %.

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“…The impact of the solar radiation and the electricity price on the payback period for SCPP is presented. Fathi et al 20 predicted the generated power using the solar radiation input. The results were compared with the data of the Manzanares prototype.…”

Section: Introductionmentioning

confidence: 99%

“…Fathi et al. 20 predicted the generated power using the solar radiation input. The results were compared with the data of the Manzanares prototype.…”

Section: Introductionmentioning

confidence: 99%

A computational and an experimental study on the effect of the chimney height on the thermal characteristics of a solar chimney power plant

Ayadi

Driss

Bouabidi

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part E:

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The aim of this paper is to highlight the impact of the chimney height on the local characteristics of the air flow within a solar chimney power plant. The solar chimney power plant prototype was numerically and experimentally investigated. The experimental prototype of the solar chimney power plant was built in the National School of Engineers of Sfax, University of Sfax, Tunisia in the North Africa. The prototype is characterized by a collector diameter equal to D ¼ 2750 mm, a collector height equal to h ¼ 50 mm, a chimney height equal to H ¼ 3000 mm, and a chimney diameter equal to d ¼ 160 mm. The air flow has been simulated using the commercial software Ansys Fluent 17.0 and the computational findings have been validated using our experimental results. Computational fluid dynamics findings confirm that the chimney height is very influential on the local characteristics of the solar chimney power plant.

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Numerical–analytical assessment on Manzanares prototype

Cited by 28 publications

References 10 publications

Numerical investigation and multi‐objective thermo‐economic optimization of a solar chimney power plant

Numerical investigation and multi‐objective thermo‐economic optimization of a solar chimney power plant

Optimization of a Small Solar Chimney

A computational and an experimental study on the effect of the chimney height on the thermal characteristics of a solar chimney power plant

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