Steam is leaving a pressure cooker whose operating pressure is 30 psia. The amount of liquid inside the pressure cooker is found to decrease by 0.4 gallon in 45 minutes when steady operating conditions are established. The cross-sectional area of the exit opening on the pressure cooker is 0.15 in^2.
(a) What is the mass flow rate of the steam (lbm/hr) at the exit?
(b) Calculate velocity of the steam (ft/s) at the exit