Effect of the turbine diameter on the generated power of a solar chimney power plant

Ayadi, Ahmed; Driss, Zied; Bouabidi, Abdallah; Abid, Mohamed Salah

doi:10.1177/0958305x18761148

Cited by 10 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resolution of these equations is developed through the CFD software 'Ansys Fluent 16.2'. [37][38][39] The equations are written in the cylindrical coordinate system as follows [40,41] :…”

Section: Mathematical Formulationmentioning

confidence: 99%

Computational fluid dynamics simulation and optimization of the fluid flow behaviour in a multi‐stage solar updraft tower using a new chimney design

et al. 2023

Self Cite

View full text Add to dashboard Cite

This work proposes a new chimney design that allows for the development of a multi‐stage solar updraft tower (SUT). The new design consists of two successive divergent chimneys. A 3D model was established to inspect the air flow behaviour within the SUT in six configurations: four multi‐stage systems with four divergence angles of the second stage were compared to the simple conventional SUT and the simple SUT with a divergent chimney. The new SUT performs better than the conventional one, while the two‐stage solar tower multiplied the system efficiency. Two high‐velocity zones appeared for the two‐stage SUT, whereas one zone occurred for the conventional system. The velocity in the two zones achieved a significant value, like that of the conventional system. In addition, the second stage's divergence angle directly impacts the velocity value inside the two stages. The static pressure distribution varies with the change in chimney design. The depression area occurs twice for the multi‐stage SUT in the inlet of each stage.

show abstract

Section: Mathematical Formulationmentioning

confidence: 99%

Computational fluid dynamics simulation and optimization of the fluid flow behaviour in a multi‐stage solar updraft tower using a new chimney design

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…The warm air devices can be divided into two groups: Concentration and non‐concentration devices. For non‐concentration systems, the most used conception is the solar chimney power plant (SCPP) that uses sunlight and the natural buoyancy of heated air to extract energy from sun . The collector, also called greenhouse, covers and leaders the warmed air from the collector inlet to the system center using buoyancy.…”

Section: Introductionmentioning

confidence: 99%

“…For non-concentration systems, the most used conception is the solar chimney power plant (SCPP) that uses sunlight and the natural buoyancy of heated air to extract energy from sun. [2][3][4][5][6][7] The collector, also called greenhouse, covers and leaders the warmed air from the collector inlet to the system center using buoyancy. The greenhouse outcome has an indispensable role to generate the rising buoyancy force.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational analysis of the collector geometry of a solar chimney

Ayadi

Driss

Abid

2019

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

The solar chimney power plants (SCPP) are thermodynamic devices that transform the heat produced by the solar radiation into electricity. A SCPP make significant contributions to the energy generating in countries where sunlight is available. The optimization of the solar setups is essential to enhance their economic profitability. In this article, a numerical method is investigated by the use of the commercial CFD code Ansys Fluent to analyze the airflow within the solar chimney. Different considered cases have been studied. Indeed, a new design of the SCPP is presented and compared with a conventional solar chimney power plant (CSCPP). The proposed design is characterized by a convergent collector output. For each case, the local flow characteristics were presented and discussed. This technical solution favorite the generated power of CSCPP. This article is identified important to increase the generated power for an existing SCPP.

show abstract

“…In this study, the commercial computational fluid dynamics code Ansys Fluent 17.0 is investigated to study the behavior of the airflow within the solar chimney power plant. The mentioned code solves the Navier–Stokes equations, such as the continuity, the momentum, the turbulent kinetic energy k, and the dissipation rate of turbulent kinetic energy ε equations …”

Section: Introductionmentioning

confidence: 99%

The impact of placing obstacles on the distribution of the airflow inside a solar chimney

Ayadi

Driss

Abid

2019

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

Solar energy sources are alternative solutions to creating energy by the use of solar radiation. The solar chimney power plants (SCPPs) are non-concentrated thermal systems that use the solar radiation to produce green energy. The main components of an SCPP are a collector, an absorber, a chimney, and a turbine that is coupled with a generator. The feasibility study of these thermal devices is required. In this paper, a study of a solar chimney power plant is reported. In fact, a numerical investigation of the obstacle effect on the distributions of the airflow in a solar chimney is presented using the commercial CFD code Ansys Fluent. The comparison between numerical and experimental findings has shown good agreement for the considered instance. Accordingly, the presented numerical model is capable of estimating the airflow characteristics inside the solar device. Results showed that the placement of obstacles at the collector output favors the performance of an existing solar chimney. The generated power could be enhanced by 11.5% using one obstacle and 14.75% using two obstacles.

show abstract

Effect of the turbine diameter on the generated power of a solar chimney power plant

Cited by 10 publications

References 18 publications

Computational fluid dynamics simulation and optimization of the fluid flow behaviour in a multi‐stage solar updraft tower using a new chimney design

Computational fluid dynamics simulation and optimization of the fluid flow behaviour in a multi‐stage solar updraft tower using a new chimney design

Experimental and computational analysis of the collector geometry of a solar chimney

The impact of placing obstacles on the distribution of the airflow inside a solar chimney

Contact Info

Product

Resources

About