A review on solar chimney systems

Kasaeian, Alibakhsh; Molana, S.M.H.; Rahmani, K.; Wen, Dongsheng

doi:10.1016/j.rser.2016.09.081

Cited by 137 publications

(38 citation statements)

References 176 publications

(132 reference statements)

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“…One of the crucial issues that are encountered in the development of power plants using renewable energy sources is a relatively low specific power per unit of occupied space [2]. Such stations can be considered effective only if the energy generation density is not less than 50 W / m 2 .…”

Section: Efficiency Of Solar-wind Power Plantsmentioning

confidence: 99%

Solar-vortex power plants: Principles of effective work and technical requirements on the preparation of initial data for design

Solovyev

Shilova

2018

MATEC Web Conf.

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This article discusses the conceptual problems of the energy conversion process from radiant radiation into the energy of flows and electric energy in solar convective-vortex power plants. Moreover, this research includes the analysis of the factors that can contribute to the achievement of the optimal conditions for the control of the thermal energy concentration processes of solar radiation into the energy of tornado-like flows. Also, this article will discuss the results of the development of appropriate technical requirements for the design and construction of the building foundations and structures of solar-vortex power systems.

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Section: Efficiency Of Solar-wind Power Plantsmentioning

confidence: 99%

Solar-vortex power plants: Principles of effective work and technical requirements on the preparation of initial data for design

Solovyev

Shilova

2018

MATEC Web Conf.

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“…Researchers have focused on developing the technology of thermal solar energy, with potential applications worldwide. Kasaeian et al [5] presented a comprehensive review of solar chimney systems. Depending on the research directions, solar chimneys may serve various goals [6][7][8][9], such as natural ventilation in the buildings [2,5,[10][11][12][13], small-scale power plants, generation in full-scale energy generation systems, and some applications in smart islands [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The obtained results indicate that the diameter of the collector and the diameter and height of the chimney and turbine are critical parameters for the construction of a solar plant. Kasaein et al [5] reviewed experimental and theoretical studies of various solar collectors. They solved the system of equations for conservation of mass, momentum, and energy with appropriate boundary conditions for turbulent flows based on many experimentally determined parameters for air flowing through a chimney plant.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Experimental Investigation of the Solar Chimney System

et al. 2019

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In this, paper the authors propose a new simplified method of solving the problem of air flow through a solar chimney system using a classical system of equations for the principles of conservation (momentum, mass, and energy), as well as a general solution to research the problem using similarity theory. The method presented in this paper allows one to design a solar chimney. The theoretical analysis was compared with experimental studies on existing solar towers. The experimental and theoretical studies were satisfactorily consistent. For clarity, the phenomenon of heat flow in the solar chimney was described using dimensionless numbers, such as the Reynolds, Grashof, Galileo, Biot, and Prandtl numbers. In the equations for the dimensionless geometric parameters, the ratios of the collector radius to the thickness gap, height, and chimney radius were used. The method used to test the system of equations allows us to analyse various solar collectors easily. In the scientific literature, there is a lack of a simple calculation method to use in engineering practice, suitable for each type of solar chimney independent of dimensions and construction parameters.

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“…In another research, it is reported that ambient cross wind effects increase with the chimney height, which have positive influence on the power output of the plant (Ming et al, 2017). In most of the works, the ratio of chimney diameter to chimney height is addressed to be 0.1 for maximum air velocity at the chimney inlet (Kasaeian et al, 2017), however, the said works are mostly based on numerical models and further experimental justifications are required.…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Solar Chimneys: Part I – Impact of Chimney Height on Power Output

Cüce¹,

Cuceb²

2019

Energy Research Journal

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Solar chimney is a truly sustainable and green energy technology, which is a potential alternative to carbon-based energy economy. The working principle of solar chimneys is based on the buoyant nature of air to turn a turbine that produces electrical power. Solar chimneys are highly in the centre of interest among all solar energy applications since they enable both day and night time operation owing to greenhouse and chimney effects. A typical solar chimney consists of three main parts as chimney, collector and turbine. When the in-situ applications of solar chimneys are gone through, it can be easily asserted that the driving force in electricity generation comes from the chimney effect as a consequence of the notable pressure differences between the inlet and outlet of the chimneys. In most cases, the greenhouse effects on power output are considered auxiliary only due to non-optimised geometric properties for the air medium beneath the collector. Within the scope of this CFD research, the impacts of chimney height on power output of a typical solar chimney are evaluated. A commercial and reliable CFD software ANSYS FLUENT is considered for the numerical analyses. For different chimney heights, the average velocity at the inlet of chimney in which the turbine is placed is determined by applying k-ε turbulence model, continuity, momentum and energy equations for a 2D model. The results reveal that there is an exponential relationship between the pressure difference and the average air velocity and the solar chimney is found to be practical after a certain value of chimney height. For a chimney and collector diameter of 10 and 1000 m, respectively, the average velocity at the inlet of chimney is calculated to be 25.17 m/s for a chimney height of 100 m, whereas it is 18.06 m/s for the height of 50 m. The findings are of vital importance in terms of feasibility studies on solar chimneys since they give a clear understanding about the influence of chimney height on the electrical power output of any solar chimney power plant.

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A review on solar chimney systems

Cited by 137 publications

References 176 publications

Solar-vortex power plants: Principles of effective work and technical requirements on the preparation of initial data for design

Solar-vortex power plants: Principles of effective work and technical requirements on the preparation of initial data for design

Analytical and Experimental Investigation of the Solar Chimney System

Performance Assessment of Solar Chimneys: Part I – Impact of Chimney Height on Power Output

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