I need help for this homework, inside the chamber there is going to be vacuum pressure of 35 mbar and I need it to be controlled as to reach vacuum pressure of 5 mbar. I ned to use butterfly valve to achieve that. Thus the system is going to reach negative 35 mbar and then the valve should open to allow the atmospheric pressure to inter the chamber, but I need to calculate the valve's flow rate in four different setups so I can determine how much time I need to open it, for each setup, until l reach negative 5 mbar. Calculate the flow rate once the valve is open: a. 25% b. 50% c. 75% d. 100% Valve Ø = 5cm Chambe Chambers dimensions: H= 40 cm W= 50 cm L= 40 cm

I need help for this homework, inside the chamber there is going to be vacuum pressure of 35 mbar and I need it to be controlled as to reach vacuum pressure of 5 mbar. I ned to use butterfly valve to achieve that. Thus the system is going to reach negative 35 mbar and then the valve should open to allow the atmospheric pressure to inter the chamber, but I need to calculate the valve's flow rate in four different setups so I can determine how much time I need to open it, for each setup, until l reach negative 5 mbar. Calculate the flow rate once the valve is open: a. 25% b. 50% c. 75% d. 100% Valve Ø = 5cm Chambe Chambers dimensions: H= 40 cm W= 50 cm L= 40 cm