(Solved): 4-81 A parallel flow heat exchanger operates at steady state with separate streams of air and water. ...

4-81 A parallel flow heat exchanger operates at steady state with separate streams of air and water. Each stream experiences no significant changes in pressure. Heat transfer with the surroundings and kinetic and potential energies can be ignored. The ideal gas model applies to the air. Determine the value of the exit temperature. 2 T2 Fig. P4.81 44 T4 = T? 3 Air, Saturated vapor, P? = 1 bar m? = 10 kg/s P3 = 1 bar T3 = 1200 K m? = 5 kg/s 1