Air flow through openings

[merton]

Is there a formula for calulating the air flow (standard cubic feet per hour) for a tank vent opening given the diameter of the connection and the internal pressure of the tank?

 

[blackwed]

Atmospheric tank? I would guess the flow rate is the same as fluid flow into or out of the tank.

DB

 

[IFRs]

Assuming incompressible flow (reasonable at low pressures) check standard formuale in Marks, Roarks, etc.