Air is heated at steady state as it flows through a constant area duct. At the inlet, the pressure is 2.8 bar, the temperature is 325 K, and the velocity is 85 m/s. At the exit, the pressure and velocity are 1.65 bar and 300 m/s, respectively. Neglecting potential energy effects and assuming ideal gas behavior for the air, determine the: a. Temperature at the duct exit (K) Ans. T = 675.9 K b. Heat transfer (kJ/kg).