corresponding to the compression ratio that at this point efficiency of simple gas turbine configuration
and regenerative gas turbine configuration equals. For higher values of compression ratio the heat
exchanger in regenerative gas turbine configuration would cool the air leaving the compressor and as a
result reduce the efficiency. Also the overall thermal efficiency for other gas turbine configurations is not
significance at lower compression ratio. The overall thermal efficiency of combined cycle for different
gas turbine configurations are very significance with higher compression ratio.