Ammonia enters a control volume at a temperature of 150°C and a pressure of 16.0 bar. The incoming volumetric flow rate is 10 m3/s through a pipe that is 0.5 m in diameter. The ammonia is cooled in the device and exits either as a saturated liquid at 6.0 bar or saturated vapor at 6.0 bar. The saturated vapor exits through a pipe with a diameter of 0.5 m. The mass flow rate of saturated liquid ammonia exiting the control volume is measured to be 20 kg/s. The saturated liquid leaves through a pipe 10 cm in diameter. Assume steady state and uniform flow at each inlet or exit.
a) Determine the velocity (m/s) and mass flow rate (kg/s) of the ammonia saturated vapor stream leaving the control volume.