Thermodynamics Mech3001 - Week 5 - Problem 4 (5.13)

5-13 Refrigerant-134a flows through a pipe of 28 cm diameter at 200 kPa and 20°C with a velocity of 5 m/s. Heat is supplied to R-134a as it flows and leaves the pipe at 180 kPa and 40°C. Determine,
a) the volume flow rate of refrigerant at the inlet
b) the mass flow rate,
c) the velocity and volume flow rate of refrigerant at the exit.

Answers: (a) 0.3079 m /s, (b) 2.696 kg/s, (c) 0.3705 m /s, 6.02 m/s