Air enters a horizontal, constant-diameter heating duct
Chapter 4, Problem 4.26(choose chapter or problem)
Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 K, 1 bar, with a volumetric flow rate of \(0.25 \mathrm{~m}^{3} / \mathrm{s}\), and exits at 325 K, 0.95 bar. The flow area is \(0.04 \mathrm{~m}^{2}\). 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, in kW.
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