Air flows through an open system at the steady mass flow rate of 5 kg/s. At inlet the air velocity is negligible, the pressure is 1 bar and the
temperature is 15 °C. The air flow is compressed isentropically and
leaves the system at a pressure of 5 bar through a pipe with an internal
diameter of 80 mm. (Assume for air, R=287 J/kgK and y = 1.4).
Calculate:
i. The temperature of the air as it leaves the system.
ii. The velocity in the exit pipe.
iii. The power input to the air.