Refrigerant 134a flows at steady state throught a horizontal pipe having an inside diameter of 4 cm, entering as saturated vapor at -8 degree celecius with a mass flow rate of 17 kg/min. Refreigerant vapor exits at a pressure of 2 bar. If the heat transfer rate to the referigerant is 3.4 kW, determine the exit temperature in degree celcius, and the velocities at the inlet and exit, each in m/s.