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Re: [PSUBS-MAILIST] air pressure
Matt,
If you charge the container to 300 PSI and sink it
to a depth that corresponds to 300 PSI there is no problem. All forces are
equal.
But, you can't safely say that a container that
will handle 300 PSI of internal pressure will withstand 300 PSI of external
pressure.
The plastic soda (pop) bottle example has been used
here many times. It will withstand the pressure of the carbonated beverage
internally but will begin collapsing in only a foot of water if empty.
Filling the air space you described in your
previously posting in tried and true. What's usually used as a filler is a
nonconductive oil. Basically replacing the compressible air with a
virtually non compressive liquid.
Dan H.
----- Original Message -----
Sent: Tuesday, April 15, 2003 12:17
AM
Subject: Re: [PSUBS-MAILIST] air
pressure
Hey, and another thing,
on a more appropriate thread, sorry to post again so soon.
Is it
reasonable to expect a container that can hold a certain PSI to resist
crushing were that same PSI to be exerted on it's outer surface? For example,
an air tank that can hold 300 PSI, would it withstand being submerged to a
depth that exerts 300PSI on it's outer surface?
Just a thought,
...Matt