Air enters an insulated turbine operating at steady state at 8 bar, 500k, and 150 m/s. at the exit the conditions are 1 bar, 320 k, and 10 m/s. there is no in elevation. determine the work developed and the exergy destruction, each in kj/kg of air flowing. let to=300k and po=1bar significant change

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.