3D numerical study on estimating flow and performance parameters of solar updraft tower (SUT) plant: Impact of divergent angle of chimney, ambient temperature, solar flux and turbine efficiency

Das, Pritam; Chandramohan, V.P.

doi:10.1016/j.jclepro.2020.120353

Cited by 58 publications

(9 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bouabidi et al [ 30 ] developed numerous CFD simulations to investigate the chimney configuration effect and indicated that the divergent chimney presents the appropriate chimney configuration. Das and Chandramohan [ 31 ] appraised the effect of the divergence angle of the chimney on the SUT efficiency and discovered that the small values of the divergence angle give the highest velocity value in the chimney bottom. It was demonstrated that the velocity achieved its maximum for the divergence angle of 1° and decreased for the divergence up to 1°.…”

Section: Introductionmentioning

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

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: Introductionmentioning

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

View full text Add to dashboard Cite

show abstract

“…The efficiency of SCPP is strongly associated with the environmental conditions and geometric parameters. Extensive studies have been conducted to examine the impacts of environmental factors such as wind speed 19 , ambient air temperature 20 , soil porosity 21 , solar flux 22 and site altitude 23 on the enactment of SCPP. Along with the environmental conditions of the place where the power plant is built, the geometric parameters of the SCPP also strongly affect the efficiency and performance of the power plant.…”

Section: Introductionmentioning

confidence: 99%

Improvment of combined solar chimney power plant with gas power plant

Mirzamohammad

Yazdi

Lavasani

2023

Sci Rep

View full text Add to dashboard Cite

Recently, several researches have been done to improve the perfomance of solar chimney power plants (SCPP) and increase their low output power during hours when the solar radiation is limited. In this study, by combining a SCPP and a gas power plant, the output power is increased and the power output of the combined power plant can be gained at all hours of the day and night. Pipes are buried under the ground and the outlet hot gas from gas power plant flows through the buried pipes instead of being released into the atmosphere through the stacks. Flowing of hot gas through the buried pipes at the soil under the canopy increases the temperature of soil which is exposed to the solar radiation. Increasing of the soil temperature leads to the growth in the value of air temperature under the canopy. The air density reduces as the air temperature increases which leads to the increase of air velocity and output power. By applying the buried pipes, the output power is not zero during the hours when there is no radiation flux. The results for air temperature, heat loss and output power are studied in detail and it is shown that the use of buried pipes in which hot gas flows leads to the increase of the output power of SCPP by 554%, 208% and 125% at the radiation flux of 200 W/m2, 500 W/m2 and 800 W/m2, respectively.

show abstract

“…SCPP is enabled carbon-free electricity generation leading to sustainable growth and development towards a green economy and a safer environment. It is also used for other applications such as air conditioning, desalination, electrical power generation and agri-food processing (Das and Chandramohan, 2020). SCPP has three basic components.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, a turbine connected to the generator is required to convert the kinetic energy of the air into electrical energy (Das and Chandramohan, 2020). The theoretical concept of the solar chimney plant was first developed by Hanns Gunther at the beginning of the 19th century and the first plant was built in 1981 in Manzanares, Spain under the supervision of J. Schlaich, and the theoretical description of the solar chimney was provided by Haaf et al (Haaf et al, 1983). Later, Schlaich et al investigated the commercial and economic viability of a large-scale plant (up to 200 MW).…”

Section: Introductionmentioning

confidence: 99%

İskenderun Bölgesi İçin Tasarlanan Güneş Baca Santrali Sayısal İncelemesi

Önal

Koç

Köse

et al. 2022

Konya Journal of Engineering Sciences

View full text Add to dashboard Cite

Today, energy is accepted as the most indicator of economic development. However, the use of fossil fuels as energy sources is caused the depletion of the ozone layer, global warming and climate change. Therefore, using renewable energy systems called sustainable energy is a remarkable step in terms of both minimizing fossil fuel consumption and the effects of the environment on human health. In this study, solar chimneys, one of the solar-assisted electricity generation systems among renewable energy sources, are analyzed. A solar chimney power plant (SCPP) has been designed by considering the environmental conditions of the Iskenderun region in Hatay province. The facility consists of collector, chimney, turbine and generator. Sun rays entering the solar chimney from the transparent collector heat the air. The heated air leaves the solar chimney with the effect of the pressure difference. The turbine is placed in the chimney section where the air velocity is high. The mechanical power obtained from the turbine is converted into electrical energy through the generator. The energy source of the system is the sun, and the working fluid of the system is air. In the calculations, the average irradiance value of the Iskenderun region was used and optimization of the designed SCPP was made using these values. The optimization of the SCPP designed for the Iskenderun region is performed using numerical analysis programs.

show abstract

3D numerical study on estimating flow and performance parameters of solar updraft tower (SUT) plant: Impact of divergent angle of chimney, ambient temperature, solar flux and turbine efficiency

Cited by 58 publications

References 30 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

Improvment of combined solar chimney power plant with gas power plant

İskenderun Bölgesi İçin Tasarlanan Güneş Baca Santrali Sayısal İncelemesi

Contact Info

Product

Resources

About