When they fill up oxygen tanks, does the pressure from the source?
Posted on March 5th, 2010 by admin
exceed the pressure of the container being filled. For example, say I have a 3000psi tank, can you fill the tank with a source that is only 200psi; when the 3000psi tank reaches 200psi, can it no longer be filled by the 200psi tank.\
This is assuming the 200psi tank has a continuous feed to it, and is really acting as a filter in the system.
Initially when your tanks is empty, the pressure of the source is higher. But when you fill your tank, their pressure will be equal (The pressure is determined by vapor pressure of oxygen liquid at that temperature).
At this stage you only fill oxygen gas.
The second stage is usually continued by filling oxygen liquid by gravity or small pump. (I mean, you can fill your 200 psi tank with 200 psi source)
March 5th, 2010 at 6:49 am
yes, you cannot go higher than 200 psi if all you have is 200 psi, you need a compressor to squeeze the gas (O2) up to 3000 psi. In theory you could achieve 3000psi in your container by heating it but that’s not recommended.
References :
March 5th, 2010 at 7:16 am
Not unless you have some sort of compressor to increase the pressure. If you are just connecting one tank to another you cannot exceed the pressure in the supplying tank.
References :
March 5th, 2010 at 7:39 am
The gas moves from the high pressure to the low pressure. When the pressure becomes equal you have no driving force.
References :
March 5th, 2010 at 8:13 am
Initially when your tanks is empty, the pressure of the source is higher. But when you fill your tank, their pressure will be equal (The pressure is determined by vapor pressure of oxygen liquid at that temperature).
At this stage you only fill oxygen gas.
The second stage is usually continued by filling oxygen liquid by gravity or small pump. (I mean, you can fill your 200 psi tank with 200 psi source)
References :
Mech. graduate student