Experimental and CFD investigation of small-scale solar chimney for power generation. Case study: southeast of Algeria

Azizi, A.; Tahri, T.; Sellami, M.H.; Ladjel, Segni; Belakroum, R.; Loudiyi, Khalid

doi:10.5004/dwt.2019.24167

Cited by 13 publications

(6 citation statements)

References 26 publications

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“…Table 1 lists some parameters of this test simulation [57][58][59]. The position of the sun, the chimney shadow, and the heliodon are also visible (permission for displaying this figure here was requested from Aladdin s team, who graciously granted it and further clarified that obtaining such permission is not compulsory).…”

Section: Validation Casementioning

confidence: 99%

Energy Generation Intensity (EGI) of Solar Updraft Tower (SUT) Power Plants Relative to CSP Plants and PV Power Plants Using the New Energy Simulator “Aladdin”

Marzouk

2024

Energies

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The current investigation provides information about solar updraft tower power plants, SUTPPs (also called solar chimney power plants, SCPPs), which form a unique method of solar-powered electricity production through a ducted wind turbine driven by induced airflow as a result of solar heating. The investigation is conducted using numerical modeling via the system-level simulation tool Aladdin (developed and released freely by the Institute for Future Intelligence, IFI) for solar energy systems, wind energy systems, or the built environment. The Aladdin energy simulator is first evaluated here by comparison with published experimental and numerical results corresponding to the historical 50 kW prototype SUTPP that was successfully tested in Manzanares (Spain) between 1982 and 1989. This prototype has a height of about 195 m for the chimney (the updraft tower) and a radius of about 122 m for the solar heat absorber (the solar air collector or the greenhouse). Next, various climate and performance characteristics are investigated and contrasted for nine different locations around the world with a similar latitude of 24°, which is within the sunbelt, assuming that the same Manzanares SUTPP prototype geometry is employed in these locations. These nine locations are Muscat (Oman), Al Jawf (Libya), Riyadh (Saudi Arabia), Karachi (Pakistan), Ahmedabad (India), Havana (Cuba), Culiacán (Mexico), Dhaka (Bangladesh), and Baise (China). The energy generation intensity (EGI) for the Manzanares-type solar updraft tower power plant in these nine examined locations was between 0.93 kWh/m2 per year (in Baise) and 2.28 kWh/m2 per year (in Muscat). Also, Muscat had the smallest seasonality index (maximum-to-minimum monthly electric output) of 1.90, while Baise had the largest seasonality index of 4.48. It was found that the main limitation of the overall SUTPP energy conversion efficiency is the chimney efficiency (the process of accelerating the air after entering the chimney). This study concludes that solar updraft towers (SUTs) cannot compete with existing mature and modular renewable energy alternatives, particularly photovoltaic (PV) panels, if the aimed use is commercial utility-scale electricity generation. Instead, SUTs may become attractive and achievable if viewed as hybrid-use projects by serving primarily as a large-scale greenhouse area for agricultural applications while secondarily allowing energy harvesting by generating clean (emissions-free) electricity from the incoming solar radiation heat.

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Section: Validation Casementioning

confidence: 99%

Energy Generation Intensity (EGI) of Solar Updraft Tower (SUT) Power Plants Relative to CSP Plants and PV Power Plants Using the New Energy Simulator “Aladdin”

Marzouk

2024

Energies

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“… Iraq Amori et al [ 64 ] Empirical study 9. Algeria Azizia et al [ 65 ] Empirical study 10. Jordan Al-Dabbas [ 66 ] Empirical study 11.…”

Section: Smart Grid Energy Sourcesmentioning

confidence: 99%

A comprehensive review of recent developments in smart grid through renewable energy resources integration

Ohanu,

Rufai,

Oluchi

2024

Heliyon

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“…Azizi et al [7] have aimed to investigate the performances of solar chimneys. A small-scale solar chimney power plant prototype was built in Ouargla University, Algeria.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Solar Chimney with a Horizontal Absorber for Building Ventilation: A Case Study

Cisse¹,

Ndiogou²,

Tigampo³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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A study is conducted to optimize the geometry of a solar chimney equipped with a horizontal absorber in order to improve its performances in relation to the provision of ventilation. The problem is tackled through numerical solution of the governing equations for mass, momentum and energy in their complete three-dimensional and unsteady formulation. The numerical framework also includes a turbulence model (k-ε) and a radiant heat transfer (DO) model. Moreover, a Multi-Objective Genetic Algorithm (MOGA) is employed to derive the optimal configuration of the considered solar chimney. It is shown that an air velocity of 0.2 m/s can be obtained. This value is the minimum allowed air velocity according to the ASHRAE' s (American Society of Heating, Refrigerating and Air-Conditioning Engineers) adaptive comfort approach. KEYWORDSNatural ventilation; adaptative comfort; solar chimney; fluent; MOGA Nomenclature Greek letters Units absorptivity dissipation rate Reynolds stress tensor turbulence kinetic energy Density (Kg/m 3 ) Stepan's coefficient (W/m 2 /K 4 ) turbulent Prandtl numbers for k turbulent Prandtl numbers for e Thermal Expansion Coefficient (1/K)

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Experimental and CFD investigation of small-scale solar chimney for power generation. Case study: southeast of Algeria

Cited by 13 publications

References 26 publications

Energy Generation Intensity (EGI) of Solar Updraft Tower (SUT) Power Plants Relative to CSP Plants and PV Power Plants Using the New Energy Simulator “Aladdin”

Energy Generation Intensity (EGI) of Solar Updraft Tower (SUT) Power Plants Relative to CSP Plants and PV Power Plants Using the New Energy Simulator “Aladdin”

A comprehensive review of recent developments in smart grid through renewable energy resources integration

Optimization of a Solar Chimney with a Horizontal Absorber for Building Ventilation: A Case Study

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