Orifice calculation

Radius=D/2 r=0.055/2 r=0.0275 V= h × V=0.3 × π× 0.02752 V=7.13×10-4m3 Calculations above show the volume of the pipe which represents the volume flow of gas before encountering the orifices. Radius=D/2 r=0.021/2 r=0.0105 V= h × V=0.006× 0.01052 V=2.078m3 Calculations above show the volume of the pipe which represents the volume flow of gas after encountering the orifices.