thermodynamic analysis available performance characteristics of a heavy- duty gas turbine, parametric study of an irreversible cycle model

In this research paper, a complete thermodynamic modeling of one of the gas turbine power plants in Iran is performed based on thermodynamic relations. Moreover, a complete computer code is developed for simulation purposes using Matlab software. To assess system performance, exergy and exergo-economic analyses are conducted to determine the exergy destruction of each component and cost of each flow line of the system. A complete parametric study is also carried out to study the eect of certain design parameters such as exergy eciency and total cost of exergy destruction on system performance variation. The exergy analysis results revealed that the combustion chamber (CC) is the most exergy destructive component compared to other cycle components. Also, its exergy eciency is less than other components, which is due to the high temperature dierence between working fluid and burner temperature. In addition, it was found that by increasing the TIT (gas turbine inlet temperature), the exergy destruction of this component can be reduced. On the other hand, the cost of exergy destruction, which is a direct function of exergy destruction, is high for the combustion chamber. The eects of design parameters on exergy eciency showed that an increase in the air compressor pressure ratio and TIT increases the total exergy eciency of the cycle. Furthermore, the results revealed that an increase in the TIT of about 350 K can lead to a reduction of about 22% in the cost of exergy destruction. Therefore, TIT is the best option to improve cycle losses.