Engineering, 26.03.2020 22:21 MyaaaMoney

Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 50 m/s and exits at 85 kPa and 320 m/s. The heat losses from the nozzle to the surroundings medium at 20°C are estimated to be 3.2 kJ/kg. Determine (a) the exit temperature and (b) the entropy generation for this process. Assume that the air has variable specific heats.

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Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 50 m/s and exits at 85 kPa and 3...