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Air enters a horizontal, constant-diameter heating duct operating at steady state at 280 K, 1 bar,...

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Mechanical Engineering

Air enters a horizontal, constant-diameter heating ductoperating at steady state at 280 K, 1 bar, with a volumetric flowrate of 0.25 m3/s, and exits at 325 K, 0.95 bar. Theflow area is 0.05 m2.


Assuming the ideal gas model with k = 1.4 for the air,determine:

(a) the mass flow rate, in kg/s,

(b) the velocity at the inlet and exit, each in m/s, and

(c) the rate of heat transfer to the air, in kW

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