As shown in the figure below, a gas turbine power plant with regeneration is used. Air inlets the compressor...

  

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As shown in the figure below, a gas turbine power plant with regeneration is used. Air inlets the compressor with properties Pi= 1 bar and Tr= 25°C, while the mass flow rate is 0.8 kg/s, and air outlets the compressor with a pressure of P2= 5 bar. The isentropic efficiency of compressor and effectiveness of regenerator are 80% and 90%, respectively. It is noted that entire power produced by the high pressure turbine is consumed in the compressor. Also, net power output of the cycle is developed by the low pressure turbine. Both turbines have isentropic efficiencies of 90%, as the air enters high pressure turbine at 1300 K. Accordingly, find, a) Net power produced, b) Thermal efficiency of the cycle, c) Temperatures of air at each point on the cycle, d) Second law efficiency of the cycle, e) Flow exergy of the fluid leaving the low-pressure turbine Assumptions: (1) The compressor, turbines, and regenerator are adiabatic, (2) No pressure losses for heat exchangers and pipes connecting components, (3) Kinetic and potential energies are negligible, (4) Working fluid is air that can be modeled as an ideal gas, and change of specific heats with temperature should be considered. P,=1 bar Regenerator ww 3 P=5 bar 6 2 Combustor T= 1300 K Comp Turb, Turb, Waet Low High pressure pressure P1 bar, T- 25 °C

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