Refrigerant 134a enters a horizontal pipe operating at steady state at 50C, 350 kPa, and a velocity of 35 m/s. At the exit, the temperature is 60C and the pressure is 200 kPa. The pipe diameter is 0.05 m.

a) Determine the specific volume at the inlet, in m³/kg,

b)Determine the mass flow rate of the refrigerant, in kg/s,

c) Determine the velocity at the exit, in m/s,

d) Determine the rate of heat transfer between the pipe and its surroundings, in kW