A rigid tank filled with saturated liquid vapor mixture of water at 150 Kpa. the tank is heated and only saturated vapor leaves the tank. the pressure remains constant during the whole process. It is observed that the amount of sat. liquid in the tank has decreased by 0.0023 m^3 in 45 minutes. The cross sectional area of the exit of the valve is 0.0001 m^2. assume the mass that converted from sat. liquid to sat. vapor is equal to the mass escaped through the valve.

 

Given:

 

vf= 0.001053 m^3/kg

 

vg= 1.1594 m^3/kg

 

hf= 467.13 kj/kg

 

hg= 2693.1 kJ/kg

 

vapor mass flow rate= 2x10^-3 kg/s

 

Find the vapor velocity at outlet (m/s)

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