# Tag Info

Accepted

### Minimum thicknesses of an elliptical cylinder pressure vessel

NOTE ON OBROUND VESSELS While not a direct answer to your question, it should be quickly noted that ASME BPVC Section VIII, Mandatory Appendix 13, Section 10 has a section to design obround vessels (...
• 5,333
Accepted

### Making a radial (only) seal inside a small tube

The idea that I was describing in the comments earlier is pretty similar to that described by Mart - I imagined the tube (red) flaring out underneath the O ring, and the opposing taper being either ...
• 7,761

### Easily compute a good approximation of heat conductivity of cooled semi-vacuum (water vapor + air)

In the molecular flow region of pressure, the thermal conductivity of an ideal, monatomic gas is obtained by this equation. $$k = \frac{1}{\pi^{3/2} d^2}\sqrt{k_B^3T/m}$$ where $d$ is the ...
• 2,943

• 5,981

### Wall temperature of pressure cylinder - Boundary condition

There are a lot of variables to consider for a thermal analysis, but none of them require pressure as a boundary condition. As alephzero indicated in their comment, this is function of heat source ...

### How to determine minimal wall thickness for a rectangular pressure vessel?

The reason that you can't find anything on Google is that it is a bad idea to make a rectangular pressure vessel. You get stress concentrations at the corners which makes the vessel much weaker. This ...
• 2,646

### Regulating pressure down inside vessel as it increases

The only way to keep pressure constant as volume is reduced is by let out the same amount of liquid/gas as the volume contracts. That is exactly what a pressure reducing valve does. As long as it ...
• 6,911
Accepted

### Regulating pressure down inside vessel as it increases

Have a second separate balloon that expands as the first is compressed. This will also keep the pressure constant as the volume is increased if that is part of your requirement.
• 15.8k

### Is it safe to use a 125PSI rated auxiliary air tank with a 150PSI air compressor?

A 10 or 25 psig overpressure of a tank is well into a potential failure for the tank. The 140 psig safety valve is used because that accounts for the true pressure capability of the tank plus the ...
• 478
Accepted

### How does a pressure vessel fail when the interal pressure exceeds the yield stress of the material?

As jko points out in a comment, the hoops tress is always higher than the medium pressure, so the case as presumed in the question cannot happen and we don't see "ineresting" new failure ...
• 4,791

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