Fatemeh Mohammadi; Ali Jahangiri; Mohammad Ameri · 10.1016/j.nexus.2025.100506 https://doi.org/10.1016/j.nexus.2025.100506
Energy Nexus
Thermo-enviro-exergoeconomic analysis of solar chimney compared with heller tower in fars combined cycle power plant Fatemeh Mohammadi; Ali Jahangiri; Mohammad Ameri Given the reduced efficiency of the Heller tower under adverse weather conditions, the solar chimney integrated with Forgo radiators offers an innovative alternative to the traditional Heller tower. This system, which utilizes solar radiation, not only generates electricity but also cools the hot water exiting the power plant's condenser. The present research demonstrates how the combined solar chimney system can not only outperform the Heller tower but also deliver superior energy and exergy efficiencies along with environmental benefits. Thermo, exergoeconomic, and environmental analyses were conducted using Engineering Equation Solver (EES) software, considering various wind speeds and turbine pressure drops. Results show that heat dissipation from the radiators increased by -3.47 %, +23.13 %, and +29.43 % at wind speeds of 5, 10, and 15 m/s, respectively, indicating enhanced cooling performance at higher wind speeds. Correspondingly, exergy destruction in the solar chimney with radiators increased by 0.0198 %, 7.17 %, and 16.7 %, respectively. The solar chimney system achieved improved energy and exergy efficiencies and reduced CO2 emissions compared to the conventional Heller tower. Energy efficiency changed by -0.96 %, +6.28 %, and +11.24 %, while exergy efficiency changed by -0.97 %, +6.28 %, and +0.26 %, respectively. The cost rate of exergy destruction decreased by 0.049 % at 5 m/s and increased by 1.94 % and 1.90 % at 10 and 15 m/s. Meanwhile, the normalized CO2 emissions decreased by 0.88 %, 2.82 %, 12.26 %, and 18.67 % across all wind speeds, indicating a significant environmental improvement compared to the conventional Heller tower.
Hybrid system
Numerical / CFD
2025
Energy Nexus
no
2025-08-20 12:00:00 00001990
thermo-enviro-exergoeconomic analysis of solar chimney compared with heller tower in fars combined cycle power plant
2025
Energy Nexus
Fatemeh Mohammadi; Ali Jahangiri; Mohammad Ameri
10.1016/j.nexus.2025.100506
Abstract
Given the reduced efficiency of the Heller tower under adverse weather conditions, the solar chimney integrated with Forgo radiators offers an innovative alternative to the traditional Heller tower. This system, which utilizes solar radiation, not only generates electricity but also cools the hot water exiting the power plant's condenser. The present research demonstrates how the combined solar chimney system can not only outperform the Heller tower but also deliver superior energy and exergy efficiencies along with environmental benefits. Thermo, exergoeconomic, and environmental analyses were conducted using Engineering Equation Solver (EES) software, considering various wind speeds and turbine pressure drops. Results show that heat dissipation from the radiators increased by -3.47 %, +23.13 %, and +29.43 % at wind speeds of 5, 10, and 15 m/s, respectively, indicating enhanced cooling performance at higher wind speeds. Correspondingly, exergy destruction in the solar chimney with radiators increased by 0.0198 %, 7.17 %, and 16.7 %, respectively. The solar chimney system achieved improved energy and exergy efficiencies and reduced CO₂ emissions compared to the conventional Heller tower. Energy efficiency changed by -0.96 %, +6.28 %, and +11.24 %, while exergy efficiency changed by -0.97 %, +6.28 %, and +0.26 %, respectively. The cost rate of exergy destruction decreased by 0.049 % at 5 m/s and increased by 1.94 % and 1.90 % at 10 and 15 m/s. Meanwhile, the normalized CO₂ emissions decreased by 0.88 %, 2.82 %, 12.26 %, and 18.67 % across all wind speeds, indicating a significant environmental improvement compared to the conventional Heller tower.
Abstract by the authors, reproduced under the CC BY 4.0 licence. Original publication via the link below.
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