Abstract: The efficiencies and performance of gas turbine cycles are highly dependent on
parameters such as the turbine inlet temperature (TIT), compressor inlet temperature (T1), and
pressure ratio (Rc). This study analyzed the effects of these parameters on the energy
efficiency, exergy efficiency, and specific fuel consumption (SFC) of a simple gas turbine
cycle. The analysis found that increasing the TIT leads to higher efficiencies and lower SFC,
while increasing the To or Rc results in lower efficiencies and higher SFC. For a TIT of
1400 ℃, T1 of 20 ℃, and Rc of 8, the energy and exergy efficiencies were 32.75% and 30.9%,
respectively, with an SFC of 187.9 g/kWh. However, for a TIT of 900 ℃, T1 of 30 ℃, and Rc
of 30, the energy and exergy efficiencies dropped to 13.18% and 12.44%, respectively, while
the SFC increased to 570.3 g/kWh. The results show that there are optimal combinations of
TIT, To, and Rc that maximize performance for a given application. Designers must consider
trade-offs between efficiency, emissions, cost, and other factors to optimize gas turbine cycles.
Overall, this study provides data and insights to improve the design and operation of simple
gas turbine cycles.