Day and Night Times Performance Improvement of the Solar Chimney by Combining with the CSP System

Sajjadi, Mohammad; Shirvani, Mansour; Yousefi, Mohammad; Afsari, Hadi; Rezaei, Loghman; Ghanadi, Mohammad

doi:10.3103/s0003701x21040095

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…The authors tried to modify constructed pilot‐scale solar chimney in Iran University of Science and Technology with 12 m chimney's height and 3.4 m collector's diameter by adding eight water stills to evaluate the performance of the combined system in the current study. [ 19 ] As shown in Figure 3 , the current setup comprises a chimney, transparent collector, and water basin. The geometric parameters of the constructed setup are listed in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study on the Integrated Solar Chimney System with Solar Still for Water Desalination

et al. 2023

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The integrated solar chimney and solar still system offers a promising approach for simultaneous water and electricity production. However, there have been only few experimental studies conducted on this combined design. In this regard, a solar chimney with 12 m height and 3.4 m collector diameter is constructed and accompanied with solar stills, installed inside the collector. The maximum velocity at the chimney's inlet for the combined system reaches near 2 m s−1, while it is 0.3 m s−1 smaller than the conventional arrangement. The maximum water production is 861 g h−1 which is attained in the evening hours. In the normal solar chimney without solar stills, air temperature inside the collector reaches its peak at 64 °C when solar radiation is maximum. While in the integrated system, this value is 59 °C which reaches with 2 h delay due to water heat storage. In addition, it is found that the effect of height of vapor space inside the basin can be negligible while the lower water depth in the basin provides higher water production.

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Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study on the Integrated Solar Chimney System with Solar Still for Water Desalination

et al. 2023

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“…While Ming et al [20] viewed the SUTPP (or SCPP) as a category of solar thermal energy technology, several other studies classified the SUTPP/SCPP as a unique solar energy technology, being different from CSP/STP [21][22][23]. Gauché et al [24] included the SUTPP within solar thermal electricity (STE) systems but excluded it from CSP systems, given that the SUTPP does not concentrate solar radiation but it still converts it into electricity.…”

Section: Introduction 1backgroundmentioning

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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Experimental and numerical study on effects of additional air height and existing soil layer under the collector of solar chimney

Afsari,

Yousefi,

Sajjadi

et al. 2024

Energy Syst

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Day and Night Times Performance Improvement of the Solar Chimney by Combining with the CSP System

Cited by 5 publications

References 21 publications

Experimental and Numerical Study on the Integrated Solar Chimney System with Solar Still for Water Desalination

Experimental and Numerical Study on the Integrated Solar Chimney System with Solar Still for Water Desalination

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”

Experimental and numerical study on effects of additional air height and existing soil layer under the collector of solar chimney

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