Bambang Arip Dwiyantoro; Ahmad Fakhruddin · 10.48084/etasr.12483 https://doi.org/10.48084/etasr.12483
Engineering Technology & Applied Science Research
A Numerical Study on the Improvement of the Thermal Performance of a Solar Chimney Power Plant with Variation in the Absorber Bambang Arip Dwiyantoro; Ahmad Fakhruddin Solar Chimney Power Plants (SCPPs) are a promising technology in the advancement of renewable energy systems. Among the various important design parameters, the geometry of the absorber surface plays a pivotal role in determining system performance. This study was conducted to evaluate the impact of the absorber surface geometry and height on the thermal and aerodynamic behavior of SCPPs. Five absorber configurations were investigated: standard, 3-square, 4-square, 5-square, and 6-square arrangements. Additionally, the effect of varying absorber surface heights was examined to identify optimal design parameters. The simulation results demonstrate that the 5-square configuration delivered the highest performance relative to the standard flat-absorber system, particularly at an absorber height of H0 = 7.5 cm, where the maximum airflow velocity reached 24.45 m/s and the power output peaked at 258.38 W. The 3-square configuration also showed notable performance at H0 = 5 cm, generating up to 156.82 W and achieving the lowest internal atmospheric pressure, indicative of improved convective flow. Overall, the findings emphasize the substantial influence of absorber surface design on SCPP efficiency, confirming that multi-square absorber configurations can significantly enhance power generation through improved thermal and fluid dynamic behavior.
Numerical / CFD
Solar chimney power plant
2025
Engineering Technology & Applied Science Research
yes
2025-10-06 12:00:00 00001981
a numerical study on the improvement of the thermal performance of a solar chimney power plant with variation in the absorber
2025
Engineering Technology & Applied Science Research
Bambang Arip Dwiyantoro; Ahmad Fakhruddin
10.48084/etasr.12483
Abstract
Solar Chimney Power Plants (SCPPs) are a promising technology in the advancement of renewable energy systems. Among the various important design parameters, the geometry of the absorber surface plays a pivotal role in determining system performance. This study was conducted to evaluate the impact of the absorber surface geometry and height on the thermal and aerodynamic behavior of SCPPs. Five absorber configurations were investigated: standard, 3-square, 4-square, 5-square, and 6-square arrangements. Additionally, the effect of varying absorber surface heights was examined to identify optimal design parameters. The simulation results demonstrate that the 5-square configuration delivered the highest performance relative to the standard flat-absorber system, particularly at an absorber height of H₀ = 7.5 cm, where the maximum airflow velocity reached 24.45 m/s and the power output peaked at 258.38 W. The 3-square configuration also showed notable performance at H₀ = 5 cm, generating up to 156.82 W and achieving the lowest internal atmospheric pressure, indicative of improved convective flow. Overall, the findings emphasize the substantial influence of absorber surface design on SCPP efficiency, confirming that multi-square absorber configurations can significantly enhance power generation through improved thermal and fluid dynamic behavior.
Abstract by the authors, reproduced under the CC BY 4.0 licence. Original publication via the link below.
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