Air at 90 kPa and 147°C enters an adiabatic diffuser steadily at a rate of 5500 kg/h and leaves at 100 kPa. The velocity of the air stream is decreased from 180 m/s to 35 m/s as it passes through the diffuser. (i) Outline the energy balance of this steady flow system. (ii) Find the exit temperature of the air in unit degree Celcius.

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