Why air tanks are not having sharp angles?

by Bona
(Enugu Nigeria)

give reasons why air tanks are not having sharp angles, as seen in petrol and water tanks ?

why is it always in cylindrical shape ?

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Feb 13, 2017
Sharp Angles
by: Mumbles

Compressor tanks are round because a cylinder is stronger than a flat surface as found on a square tank. Portholes in ships, windows in airliners, are all round so there wont be any sharp corners to cause metal fatigue and ultimate failure.

Jan 28, 2015
Air tanks
by: Bill

Never been asked that question before, Bona.

I'm guessing, but I suspect it has to do with the fact that compressing air generates a lot of water, and that water has to flow to the lowest point in the tank to be drained off regularly.

Flats or angles inside the tank would be places where water could collect, resulting in tank corrosion.

It may also have to do with being a pressurized vessel. All (most) pressurized tanks are cylindrical with smooth surfaces. Pressure exerts force equally in all directions, and the absence of sharp angles would eliminate the possibility of pressure points.

Maybe an engineer type will see this and comment?



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