Dry compressed air at Tmi 55°C, p = 15 atm, with a mass flow rate of 0.05 kg/s, enters a 50 mm diameter, 2.5mlong tube whose surface temperature is т,-25°C.
A) Determine the mean temperature of the air at the tube outlet, the rate of heat transfer from the air to the tube wall, and the power required to flow the air through the tube.