Mr_Asa said:alfadriver said:In reply to Pete. (l33t FS) :
Very true, but steel tanks are reasonably equal.
No.
Steel, as a material, reacts roughly the same in tension vs compression.
Shape of the material determines how it will react to positive or negative pressure deltas
The shape of a propane storage tank is the same as a sub. So it's more down to the thickness of the steel and what it would fail at in compression. It would work for a little depth. Not a good idea, sure.
Keith Tanner said:Streetwiseguy said:In reply to alfadriver :
Have you watched Mythbusters and the rail car tank? 14.5 psi...
Was that rail car intended to carry pressurized gas, or was it just for something like oil? If the latter, it wouldn't be designed for much pressure differential of any sort.
Even if designed to hold pressure...
Most brewing tanks are rated at 14.9 psi. They can handle significantly more than that quite safely. They are rated only rated for something like -1 psi. Our emergency PRVs (pressure relief valves) have positive pressure and negative pressure settings. And yeah, it's like -0.5 psi.
Kegs are rated for like 30/-1 psi.
alfadriver said:Mr_Asa said:alfadriver said:In reply to Pete. (l33t FS) :
Very true, but steel tanks are reasonably equal.
No.
Steel, as a material, reacts roughly the same in tension vs compression.
Shape of the material determines how it will react to positive or negative pressure deltas
The shape of a propane storage tank is the same as a sub. So it's more down to the thickness of the steel and what it would fail at in compression. It would work for a little depth. Not a good idea, sure.
This is like saying a Model T and a Ferrari 296 are both cars built in a factory, and so should be able to race on the same track in a manufacturers race.
Its technically true, but it misses key details
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