Problem 4.016 SI Refrigerant 134a enters a horizontal pipeoperating at steady state at 40°C, 300 kPa, and a velocity of 25m/s. At the exit, the temperature is 90°C and the pressure is 240kPa. The pipe diameter is 0.1 m. Determine: (a) the mass flow rateof the refrigerant, in kg/s, (b) the velocity at the exit, in m/s,and (c) the rate of heat transfer between the pipe and itssurroundings, in kW.
