Vacuum chamber thickness design

In summary: This will depend on the yield strength of the material, and, the wall thickness distribution. In summary, the conversation discusses the design of a vacuum chamber and its ability to withstand pressure. The initial question is regarding the vacuum pressure that can be sustained by a line pipe with an internal design pressure of 98 bar, a diameter of 36 inches, and a thickness of 13 mm. The conversation also touches on the potential use of alternative materials to support the chamber and the importance of considering temperature range and potential contact with the chamber wall.
  • #1
satish19183
3
0
Vacuum pressure for design of pipe

Dear experts,
I have a line pipe which internal design pressure is 98 bar,dia is 36: thickness is 13 mm,length is 12 mtr. I want to know that how much vacuum pressure sustain by this line pipe?

Regards,
Satish patel,
 
Engineering news on Phys.org
  • #2
I want to design 36" OD,12 mtr long vacuum chamber with 1 mbar vacuum pressure.
Request to gove sample calculation for find out thickness of the same.
 
  • #3
A vacuum in the atmosphere on the surface of the Earth cannot be greater than one bar, so maybe your question is …
If the pipe is rated for an internal pressure of 98 bar, then when it has a vacuum inside, how much external pressure can it withstand before it collapses?
 
  • #4
Does the chamber contain anything that contacts the wall ?
What temperature range must it withstand ?

The wall only needs to withstand one atmosphere = 14.5 psi.

Can you support a very thin wall with an external structure that will maintain the surface curvature and therefore prevent collapse of the surface.

Consider also avoiding metal by using a plywood inner surface with a plastic film shrunk on to the outside.
Surface stability requires thickness, it could be laminated with a foam core.
 
  • #5
Thread closed for Moderation...

Threads merged and re-opened
 
Last edited:
  • #6
satish19183 said:
Dear experts,
I have a line pipe which internal design pressure is 98 bar,dia is 36: thickness is 13 mm,length is 12 mtr. I want to know that how much vacuum pressure sustain by this line pipe?

Regards,
Satish patel,

satish19183 said:
I want to design 36" OD,12 mtr long vacuum chamber with 1 mbar vacuum pressure.
Request to gove sample calculation for find out thickness of the same.

Welcome to the PF.

(I've merged your two threads on what looks to be the same type of question)

It is a bit worrisome that you are asking questions like this here on an Internet forum. What experience do you have with pressure vessels? What are you working on? What is your educational background?

We have rules here at the PF concerning dangerous activities. We are able to help professionals with questions about pressure vessels. But we would be reluctant to help an amateur experiment with high pressure vessels (or vacuum chambers) where a failure of the vessel could cause people to get hurt.
 
  • #7
satish19183 said:
dia is 36: thickness is 13 mm, length is 12 mtr
So the diameter is not 36mm but 36”. Is that right?

Before we can help you with this question we need to know;
What is the purpose of the chamber?
What temperature range must it withstand ?
Does the chamber contain anything that contacts the wall ?
 
  • #8
The wall thickness is questionable. It appears it will probably deform, but, not fail.
 

1. How thick should the walls of a vacuum chamber be?

The thickness of the walls of a vacuum chamber depends on the level of vacuum required and the internal pressure. Generally, the thicker the walls, the higher the vacuum that can be achieved. However, the walls should not be too thick as this can result in unnecessary weight and cost. A good rule of thumb is to have a wall thickness of at least 1.5 times the diameter of the chamber.

2. What materials are commonly used for vacuum chamber walls?

The most commonly used material for vacuum chamber walls is stainless steel. This material is strong, durable, and can withstand high levels of vacuum. Other materials that can be used include aluminum, titanium, and glass. The choice of material depends on the specific requirements and budget of the project.

3. How does the shape of a vacuum chamber affect its thickness design?

The shape of a vacuum chamber can greatly affect its thickness design. Round or cylindrical chambers are more efficient in terms of pressure containment compared to square or rectangular chambers. This means that round or cylindrical chambers can have thinner walls while still achieving the same level of vacuum as a square or rectangular chamber with thicker walls.

4. Is there a standard formula for calculating vacuum chamber wall thickness?

There is no standard formula for calculating vacuum chamber wall thickness as it depends on various factors such as the internal pressure, material properties, and shape of the chamber. However, there are several equations and guidelines available that can help in determining the appropriate wall thickness for a specific vacuum chamber design.

5. Are there any safety considerations when designing the thickness of a vacuum chamber?

Yes, safety is an important consideration when designing the thickness of a vacuum chamber. The walls should be thick enough to contain the internal pressure and prevent any potential hazards. Additionally, the materials used should be able to withstand the level of vacuum and any potential external forces that may be applied to the chamber.

Similar threads

Calculate the thickness of a plate to withstand a specified uniform pressure
    • Mechanical Engineering
Replies
3
Views
3K
I Graduation of air flow inside a vacuum chamber
    • Classical Physics
Replies
4
Views
1K
Glass vacuum chamber minimum thickness
    • Mechanical Engineering
Replies
12
Views
8K
How can I calculate wall thickness for vacuum distillation?
    • Mechanical Engineering
Replies
2
Views
3K
Design of an 'open' venturi water pump
    • General Engineering
Replies
2
Views
4K
Designing a rectangular vacuum chamber -- Help please
    • General Engineering
Replies
5
Views
3K
Designing a Vacuum Chamber for Samples Dissolved in Ethanol
    • Mechanical Engineering
Replies
1
Views
7K
Acoustic Resonance Chamber Design- Wine glass shattering
    • Mechanical Engineering
Replies
1
Views
5K
Designing a combustion chamber (solid mechanics problem)
    • Mechanical Engineering
Replies
2
Views
3K
Calculating thickness/exoskeleton vacuum chamber
    • Other Physics Topics
Replies
4
Views
9K

Hot Threads

Recent Insights

Back
Top