2.In a regenerative steam cycle, steam enters the turbine at 7.2 Mpa and 510°C. Steam is extracted from the turbine at 610 Kpa pressure for feed water heating. The remaining steam continues to expand to 11 Kpa. The recovered condensates are pump back to the boiler. a) calculate the quantity of the extracted steam, b) for a throttle steam of 30 kg/sec, calculate the turbine work in Kw. c) calculate the cycle thermal efficiency

A Brayton cycle is used to estimate the performance of an aircraft engine with nitrogen as the working fluid. The engine generates a net power of 10 MW. Nitrogen enters the compressor of the engine at 250 K and 80 kPa and is compressed to a pressure of 400 kPa. The gas exits the turbine of the engine at 450 K and 80 kPa.a. Calculate the mass flow rate of nitrogen through the engine.b. Calculate the thermal efficiency of the cycle.c. Determine the irreversibility per unit mass for each process and for the cycle if TH = 1500 K and TL = To = 250 K.d. Which process has the largest irreversibility?