Erdem Cüce; Abhishek Saxena; Pınar Mert Cuce; Harun Sen; Shaopeng Guo; Kumarasamy Sudhakar · 10.1093/ijlct/ctaa097 https://doi.org/10.1093/ijlct/ctaa097
International Journal of Low-Carbon Technologies
Performance assessment of solar chimney power plants with the impacts of divergent and convergent chimney geometry Erdem Cuce; Abhishek Saxena; Pınar Mert Cuce; Harun Sen; Shaopeng Guo; Kumarasamy Sudhakar Abstract Influence of area ratio (AR) on main performance parameters of solar chimney power plants (SCPPs) is investigated through a justified 3D axisymmetric CFD model. Geometric characteristics of Manzanares pilot plant (MPP) are taken into consideration for the numerical model. AR is varied from 0.5 to 10 to cover both concave and convex (convergent and divergent) solar chimney designs. Following the accuracy verification of the CFD results and proving mesh-independent solution, main performance oriented parameters are assessed as a function of AR such as velocity, temperature and pressure distribution within MPP, temperature rise of air in collector, mass flow rate of air around the turbine area, dynamic pressure difference across the turbine, minimum static pressure in the entire plant, power output and system efficiency. The results reveal that AR plays a vital role in performance figures of MPP. Mass flow rate of air ($dot{m}$) is found to be 1122.1 kg/s for the reference geometry (AR = 1), whereas it is 1629.1 kg/s for the optimum AR value of 4. System efficiency (η) is determined to be 0.29% for the reference case; however, it is enhanced to 0.83% for the AR of 4.1. MPP can generate 54.3 kW electrical power in its current design while it is possible to improve this figure to 168.5 kW with the optimal AR value.
Numerical / CFD
Solar chimney power plant
2021
International Journal of Low-Carbon Technologies
yes
2021-01-15 12:00:00 00002523
performance assessment of solar chimney power plants with the impacts of divergent and convergent chimney geometry
2021
International Journal of Low-Carbon Technologies
Erdem Cüce; Abhishek Saxena; Pınar Mert Cuce; Harun Sen; Shaopeng Guo; Kumarasamy Sudhakar
10.1093/ijlct/ctaa097
Abstract
Abstract Influence of area ratio (AR) on main performance parameters of solar chimney power plants (SCPPs) is investigated through a justified 3D axisymmetric CFD model. Geometric characteristics of Manzanares pilot plant (MPP) are taken into consideration for the numerical model. AR is varied from 0.5 to 10 to cover both concave and convex (convergent and divergent) solar chimney designs. Following the accuracy verification of the CFD results and proving mesh-independent solution, main performance oriented parameters are assessed as a function of AR such as velocity, temperature and pressure distribution within MPP, temperature rise of air in collector, mass flow rate of air around the turbine area, dynamic pressure difference across the turbine, minimum static pressure in the entire plant, power output and system efficiency. The results reveal that AR plays a vital role in performance figures of MPP. Mass flow rate of air ($dot{m}$) is found to be 1122.1 kg/s for the reference geometry (AR = 1), whereas it is 1629.1 kg/s for the optimum AR value of 4. System efficiency (η) is determined to be 0.29% for the reference case; however, it is enhanced to 0.83% for the AR of 4.1. MPP can generate 54.3 kW electrical power in its current design while it is possible to improve this figure to 168.5 kW with the optimal AR value.
Abstract by the authors, reproduced under the CC BY 4.0 licence. Original publication via the link below.
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