thermodynamics question

Siemens is one of the major technology companies in the world and offers high-quality technical solutions within several groups. In Finspng municipality, Siemens has an industry where they develop and produce small gas turbines for electricity production. One of the Siemens gas turbine models that has reached the market is the SGT-750 model. The turbine can produce a net work of approx. 37 MW and the flue gas out of the turbine has a mass flow of approx. 114 kg/s and a temperature of 470C. Consider SGT-750 as a simple Brayton cycle with air as working medium and with inlet pressure and temperature of 1 bar and 300 K.

a) Draw a T-s diagram of the gas cycle. Combustion chamber Turbine Compressor Restgas Air

b) Calculate the thermal efficiency for the entire cycle.

c) Describe what would happen to the thermal efficiency if the work part of what was produced went into mechanically driving the compressor to some extent.

Fuel Turbine Compressor Restgas