Hidayet Meroua Sefiani; Fayçal Bouzit; Mohamed Bouzit · 10.4028/p-i52mbb https://doi.org/10.4028/p-i52mbb · 2026 · Numerical / CFD · Solar chimney power plant · Thermal storage / PCM

Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum

Enhancement of Thermal Performance of a Solar Chimney Power Plant Using Phase Change Material: A Numerical Study Hidayet Meroua Sefiani; Faycal Bouzit; Mohamed Bouzit This study investigates the effect of incorporating Phase Change Material (PCM) into the collector of a Solar Chimney Power Plant (SCPP). Numerical simulations were conducted using a 2D axisymmetric geometry, considering transient, turbulent, and radiative heat transfer. The results show that the PCM-enhanced system maintains higher temperatures at the collector outlet, with an average increase of approximately 6%. This thermal regulation enhances buoyancy-driven airflow, raising the chimney base velocity from 2.5 m/s in the conventional system to 3 m/s in the PCM configuration, with a corresponding increase in mass flow rate of 0.013 kg/s. Furthermore, the collector efficiency improves significantly, reaching 23% with PCM compared to 11% without. These findings demonstrate that integrating PCM into the collector effectively boosts thermal energy retention and system performance.

Numerical / CFD Solar chimney power plant Thermal storage / PCM 2026 Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum journal other no 2026-07-01 12:00:00 00001880 enhancement of thermal performance of a solar chimney power plant using phase change material: a numerical study 2026 Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum Hidayet Meroua Sefiani; Fayçal Bouzit; Mohamed Bouzit 10.4028/p-i52mbb