air enters the compressor of an air standard regenerative gas turbine
Air enters the compressor of an air-standard regenerative gas turbine at 101.3 kPa, 27°C with a mass flow rate of 678 kg/min. The pressure ratio across the two-stage compressor is 10. The turbine inlet temperature is 1400 K, and the regenerator effectiveness is 80%. Compression occurs in two stages with intercooling to 300 K between the two stages at 300 kPa. The turbine expansion also occurs in two stages, with reheat to 1300K between the stages at 0.3MPa. The isentropic efficiencies of the compressor and turbine stages are 84 and 88%,respectively. For the regenerative gas turbine, Draw T-s and P-v Diagrams(20 points)and then Determine: a) The thermal efficiency b) The back work ratio c) The net power developed, in kW d) What is the impact of irreversibilities within the turbine and compressor on the work of compression, the work output of the turbine, the back-work ratio and on the thermal efficiency? (without calculation)(10 points)
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