Answer to Question #56998 in Thermal Power Engineering for Mark Mildane B. Samson

Question #56998
1.) Air expands through a nozzle from 75 to 15 psia. The enthalpy decreases by 48 Btu/lbm. The flow is adiabatic and the inlet velocity is very low. calculate the exit velocity.

2.) The flow rate through a steam nozzle is 450 kg/h. The initial and final pressures are 1400 and 14 kPa, respectively. THe initial and final velocities are 150 and 1200 m/s, respectively. If there is no heat transfer, calculate the change in enthalpy.

3.) Steam expands adiabatically through a nozzle from 1400 to 14 kPa. The initial and final enthalpy values are 3300 and 2800 kJ/kg, respectively, and the initial velocity is very low. Determine the final velocity.
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