Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet temperature of I'm i 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is in = 105 × 100 kg/s. If the tube surface temperature at the exit is Ts,o= 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T = 400 K. q= W

Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet temperature of I'm i 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is in = 105 × 100 kg/s. If the tube surface temperature at the exit is Ts,o= 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T = 400 K. q= W

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.4P

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Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet temperature of Tm,i = 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is m = 125 × 10-6 kg/s. If the tube surface temperature at the exit is T, = 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T = 400 K. q= Mi W
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