Thermodynamic analysis of sustainable electric power production using solar tower during day and syngas combustion from municipal waste gasification during night

Zeinali, Mohsen; Sharifi, Ali; Ranjbar, Faramarz

doi:10.22059/ees.2023.1999210.1421

Thermodynamic analysis of sustainable electric power production using solar tower during day and syngas combustion from municipal waste gasification during night

Document Type : Research Paper

Authors

Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran

10.22059/ees.2023.1999210.1421

Abstract

Solar power plants have received much attention in recent years due to the use of renewable energy sources, no production of polluting gases, high concentration ratio, and proper thermal efficiency. But solar radiation absence at night prevents the uniform and continuous production of electricity. Also, the challenge of the ever-increasing accumulation of municipal waste has caused the waste fuel-based power plants to attract the attention of many industrialized and developing countries. In the present research, practical solution is proposed to solve the challenge of not producing electricity in solar tower power plants during the night by using waste as the input fuel of the power plant. The results obtained from the case study of the investigated cogeneration system show that the electric powers produced by the subsystems of the air Brayton cycle, the reheat Rankine cycle, and the organic Rankine cycle are equal to 4502.6 KW, 2640.3 KW, and 118 KW, respectively. The central receiver of the solar tower has the highest rate of irreversibility, accounting for 34% of the total exergy destruction rate. Based on the parametric study results, the irreversibility of the entire cogeneration system has a direct relationship with the inlet temperature to the turbine. Increasing the moisture of the waste also leads to a decrease in the temperature and percentage of syngas produced, and causes a decrease in the overall performance of the system.The net power of the cogeneration system increases first and then decreases with the increase in the temperature of the gasification process.

Keywords

References

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