In a centrifugal compressor, the atmospheric air enters at 28°C and leaves at 110°C and 2 bar. Calculate the isentropic efficiency and power required by the compressor, if 40 kg of air is compressed per minute. Take Cp = 1.00 kJ/kgK and C, = 0.716 kJ/kgK

Air at a rate of 50 m3/min enters an adiabatic compressor at a pressure of 100 kPa and a temperature of 24.3 C and exits at 500 kPa and 189.55 C. It then enters an insulated heat exchanger where it gets cooled by water. The air exits the heat exchanger at a temperature of 57.35 C. Water enters the heat exchanger at 20 C and exits at 50 C. Calculate the compressor power in kW, the mass for rate of the cooling water in kg/sec, and the rate of entropy generation for the compressor and the heat exchanger. Assume a mean heat capacity of water at ?? = 4.18 ??/???. You may also assume that there is no pressure drop in the heat exchanger)

4) Hot combustion gases enter the nozzle of a turbojet engine at 350 kPa, 1007 °C and 95 m/s, and they exit at a pressure 100 kPa. Assuming an isentropic efficiency of 95 percent and treating the combustion gases as air determind a- The exit velocity b- The exit temperature

A two stage compressor is used to compress 800 m3 /h of CO2 measured at 288K and 1 bar from its initial state of 0.5bar and 30k to a pressure of 1.5 bar with inter cooling to 300K. A compression efficiency of 85% may be assumed in each stage. Calculate the power required to run the compressor and the discharge temperature.