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Refrigerant-134a enters a diffuser steadily as saturated vapour at 600 kPa with a velocity of 160...

Refrigerant-134a enters a diffuser steadily as saturated vapour at 600 kPa with a velocity of 160 m/s, and it leaves at 700 kPa and 40°C. The refrigerant is gaining heat at a rate of 2 kJ/s as it passes through the diffuser : determine
(a- the exit velocity
(b- the mass flow rate of the refrigerant.
If the exit area is twice the inlet area (A2=2A1),

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