Energy, exergy, exergoeconomic, exergoenvironmental, and transient analysis of a gas-fired power plant-driven proposed system with combined Rankine cycle: thermoelectric for power production under different weather conditions

The present study proposes a system that can reduce environmental pollution emissions while simultaneously improving production capacity. The current research innovation is the use of the thermoelectric generator system and the organic Rankine cycle in conjunction with a gas turbine based on the Brayton cycle. The thermodynamic engineering equation solver software is utilized in this study to model the investigated system and acquire the system analysis results. The efficiency of the gas turbine, the competency criterion of a thermoelectric generator, compressor pressure ratio, inlet temperature to the organic turbine, and inlet temperature to gas turbine are the most relevant and practical parameters in this study. In addition, the system's exergy study revealed that the most exergy was destroyed in the combustion chamber, evaporator, gas turbine, and thermoelectric. Also, the economic analysis of the system showed that the increased cost of the system is related to the Brayton cycle unit and the steam cycle unit, respectively. Finally, a comparative case study was conducted for four cities: Abadan, Esfahan, Mashhad, and Shiraz, to evaluate the total production capacity of the system. The system performance results were evaluated with the changes in annual ambient temperature. The results showed that the system works best in the cooler climate of Mashhad.