Air at 1 atm and 285 K enters a 2-m-long rectangularduct
Chapter 8, Problem 8.85(choose chapter or problem)
Air at 1 atm and 285 K enters a 2-m-long rectangularduct with cross section 75 mm?150 mm. The duct ismaintained at a constant surface temperature of 400 K,and the air mass flow rate is 0.10 kg/s. Determine theheat transfer rate from the duct to the air and the airoutlet temperature.
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