How do i calculate i leak flow rate?
How do i calculate i leak flow rate?
(OP)
We have a vessel which I know the physical volume of. We pressurise the vessel up to a fixed pressure. (Normally around 7bar and is measured with a monometer) We then seal the vessel off for a fixed amount of time (5 mins) we then take the reading from the monometer again. From this we have the pressure drop in that time. What I am trying to work out is what the leak rate will be from these two readings.(CC/M if possible) How can this be done?
Thanks
Scott
Thanks
Scott





RE: How do i calculate i leak flow rate?
RE: How do i calculate i leak flow rate?
RE: How do i calculate i leak flow rate?
Thanks
Scott
RE: How do i calculate i leak flow rate?
RE: How do i calculate i leak flow rate?
As this will be choked flow, substitute this into a choked flow orifice calcualtion (many available) to get your voumetric flow rate or area of hole or simply divide your mass flow rate by density at atmospheric to get standard volumetric flow rate of air.
This won't be exact as air isn't a perfect gas and needs your test air to be close to 15 Deg C, but this should get you close to what you need. This looks too simple so I will stand to be corrected....
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Also: There's usually a good reason why everyone does it that way