How to calculate air quantity entering container
How to calculate air quantity entering container
(OP)
Hello,
I have to design sealed container with pressure relief valve in order to maintain same pressure inside the container and the environment. The pressure relief valve works both ways.
The question is how to calculate the air entering in the container when it is exposed to environment with great pressure than inside the container?
I need that air quantity in order to know how much moisture absorbing material i need to put inside the container in order to maintain humidity less than 20%.
Thank you
I have to design sealed container with pressure relief valve in order to maintain same pressure inside the container and the environment. The pressure relief valve works both ways.
The question is how to calculate the air entering in the container when it is exposed to environment with great pressure than inside the container?
I need that air quantity in order to know how much moisture absorbing material i need to put inside the container in order to maintain humidity less than 20%.
Thank you





RE: How to calculate air quantity entering container
RE: How to calculate air quantity entering container
air entering in the container when it is exposed to environment with great pressure than inside the container --> since you have a pressure relief valve that works both ways (aka 'a hole') how does this condition ever exist?
RE: How to calculate air quantity entering container
As for volume, can't you use the Ideal Gas Law as a starting point?
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RE: How to calculate air quantity entering container
Why not attach a desiccator and a vented surge tank to the relief valve? (The surge tank will conserve dry air vented from your vessel during discharge events).
je suis charlie
RE: How to calculate air quantity entering container
Anyway, thinking further, if you are willing to accept the assumption that real air is close enough to an ideal gas than PV=nRT. Solve for n at the interior pressures of interest and go from there.
RE: How to calculate air quantity entering container
http://www.drytechinc.com/tank-vent-dryers.html
RE: How to calculate air quantity entering container
The only way the OP makes sense is that the "relief valve" is actually a breather vent.
Perhaps the OP meant to say "maintain similar pressure inside the container and the environment"? The purpose of a relief valve is then to reduce venting events.
A vented surge tank would increase the life of the desiccant, especially if the surge tank "vent" was a long tube to reduce mixing.
je suis charlie
RE: How to calculate air quantity entering container