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At steady state, air at 200 kPa, 325 K, and mass flow rate of 1.0 kg/s...

At steady state, air at 200 kPa, 325 K, and mass flow rate of 1.0 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. The inlet cross-sectional area is 6 cm2. At the duct exit, the pressure of the air is 100 kPa and the velocity is 300 m/s. Neglecting potential energy effects and modeling air as an ideal gas, determine a. the velocity of the air at the inlet, in m/s. b. the temperature of the air at the exit, in K. c. the exit cross-sectional area, in cm2.

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Answer #1

Thus

(a) velocity of air at inlet is 777.3 m/s

(b) temperature of air at exit is 580.8 K

(c) exit cross-section area is 55.56 cm2

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