Questions tagged [pressure-vessel]

Containers that are designed specifically to retain internal pressure or a vacuum

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What's the best type of steam Trap for Superheated Steam?

Process Engineering Newbie here. What kind of Steam Traps are best suited for condensate removal in super-heated steam line or manifold? The super-heated steam is to be supplied to a process reactor ...
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31 views

How to apply the permeability value found from an experiment?

I have done a permeability experiment on LDPE in the presence of air using a 25mm circular specimen. At 30'C, the permeability was found to be 1.846 barrer. Now I am trying to apply this permeability ...
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Why can't I find a small vacuum fryer?

I'm looking for a vacuum fryer and so far the only ones available to buy are large, industrial machines. Is there some technical consideration that makes small scale machines economically unfeasible? ...
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110 views

Equations for stress in a hollow prolate spheroid under external pressure

Are there analytical expressions (functions of geometry and applied pressure) for the stress in a hollow prolate spheroid, like there are expressions for the stress in a hollow sphere/cylinder?
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Angled Nozzle on Pressure Vessel - Weld Preperation

I wonder if anyone can help! I'm trying to model 3D geometry of nozzle to shell weld. I am having issues ascertaining correct bevel angle at a given point. Surely the bevel angle would change due to ...
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36 views

How could you produce large quantities of metallic hydrogen?

Could you somehow crush hydrogen atoms with magnetic fields in order to produce it? Or maybe someday someone will invent a material capable of withstanding 500GPa and we'll have giant machines that ...
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54 views

Analytical solution of thermal stress in a bi-metallic cylinder

As a side project I have looked to solve using Python an analytical solution for one-dimensional transient heat transfer in a thick cylinder with cladding on the inside surface, wherein the fluid in ...
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1answer
105 views

Kinetic energy of a balloon

How do I quantify how much kinetic energy would be released from popping a balloon? I believe that any additional kinetic energy that results from the balloon will come from it being pressurized, but ...
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1answer
84 views

Flange EN1092-1 Type 21 Bore Diameter

How is the bore diameter of a flange Type 21 - acc. EN 1092-1 determinated? In the standard: NOTE 5 The bore diameters of flanges type 21 are not specified in this standard, the effective bore ...
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35 views

Thin or thick wall for expanding rubber pressure cylinder

If I want to expand a rubber cylinder by a certain internal volume - with all else held constant (type of material, length and radius (without constraining it), etc.) will a thinner or thicker walled ...
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1answer
318 views

using air pressure as a liquid pump

I have a $100\ \text{psi}, 300\ \text{cfm}$ air compressor that we use for running power tools, I need a way to inject mortar deep into a small opening and was wondering if anyone had experience with ...
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47 views

Long-term storage of a gas?

Can this formula be used to evaluate the minimum thickness of a spherical pressure vessel that holds hydrogen gas at 10 ATM for a long time? $$\sigma = \dfrac{p r}{2 t}$$ I was told, "As long as you ...
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Safety factor for pressurized container at 10 ATM

There is no secondary containment to hold any potential shrapnel. How would this change the safety factor that is standard at 2.5? The consequences of this container exploding would be quite extreme ...
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54 views

Trying to understand water pressure / air pressure

i have been researching deep dives. I understand that deep-divers have the same pressure inside of their bodies as there is outside. Yet i still cannot understand how they do it. Even if they have the ...