(CD-ROM)
Refrigerant 22 enters the condenser of a refrigeration system operating at steady state at 12 bar, 50°C, through a 2.5- cm-diameter pipe. At the exit, the pressure is 12 bar, the temperature is 28°C, and the velocity is 2.5 m/s. The mass flow rate of the entering refrigerant is 5 kg/min. Determine
(a) the velocity at the inlet, in m/s.
(b) the diameter of the exit pipe, in cm.