Refrigerant-134a enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. The refrigerant gains heat as it flows and leaves the pipe at 180 kPa and 40°C. Determine
the volume flow rate of the refrigerant at the inlet
the mass flow rate of the refrigerant
the velocity and volume flow rate at the exit.