Consider a circular air duct (no insulation) with a constantdiameter of 10 cm and length of 1 m. The inlet condition is 40 degC and 20 m/s. The wall of the duct is at a constant temperature of25 deg C.
a) Find the exit temperature of the air flow. Report answer indeg C with 3 significant figures.
b) Find the rate of heat lost from the air flow. Report answerin kW with 3 significant figures.
