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- W4308298107 abstract "In this work, Curved-Guide Vanes (CGVs), a combination of inlet guide vanes and central guide, is proposed to estimate the feasibility of using CGVs for solar chimneys in terms of performance. The primary objective of this work is to examine the impact of CGV’s geometry on the performance of a solar chimney using a 3D numerical simulation. Five cases of 90°, 75°, 60°, 45°, and 30° CGVs were proposed, and the influence of CGV’s angle on the flow field was studied first inside the chimney without turbine. The strength of the swirls generated by CGVs was measured using swirl number at the height of 8 m inside the chimney, and swirl numbers of 0.88 and 0.19 were found for the cases of 30° and 75°, respectively. Finally, the output power in presence of the turbine was obtained for angles of 30°, 60°, 90°, and different rotational speeds, ranging from 20 rpm to 120 rpm. It was found that at a low angular velocity, the CGVs had no improvement. The maximum output power of 82.17 kW occurred in 30° CGVs at 60 rpm. Compared to the power of the 90° CGVs as the reference case, at the same rotational speed of 80 rpm, an increase of 29.3 % and 11.9 % in output power were observed in 30° and 60°, respectively. Regarding the mass flow rate, the case of 90° had the highest mass flow rate of about 752 kg/s at 20 rpm while the case of 30° had the minimum mass flow rate of about 532 kg/s at 100 rpm." @default.
- W4308298107 created "2022-11-10" @default.
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- W4308298107 date "2022-11-01" @default.
- W4308298107 modified "2023-09-26" @default.
- W4308298107 title "Power generation using solar energy: The effect of curved-guide vanes on the performance of a turbine in a solar chimney power plant" @default.
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- W4308298107 doi "https://doi.org/10.1016/j.solener.2022.10.052" @default.
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