Refrigerant 134a enters the evaporator of a refrigeration system operating at steady state at -8oC and a quality of 20% at a velocity of 5 m/s. At the exit, the refrigerant is a saturated vapor at -8oC. The evaporator flow channel has constant diameter of 1.7 cm. Determine the mass flow rate of the refrigerant, in kg/s, and the velocity at the exit, in m/s.

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