Understanding Nitrogen Compression: Implications on Pressure Vessel Design

In summary, the conversation discusses the process of compressing a pressure vessel with nitrogen up to 10 MPa and the associated temperature rise. The type of compressor and cooling method used can affect the temperature rise, with adiabatic compression resulting in the highest potential temperature. The conversation also mentions the use of aluminium tanks and the comparison to a diesel engine's compression ratio.
  • #1
Rezo
1
0
Hello, I am currently designing a pressure vessel and am interested in compressing it with nitrogen up to approximately 10 MPa. How would I go about determining the associated temperature rise when this takes place? This will have implications on the strength of the metal used.

Thank you kindly for your time.
 
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  • #2
Well, what kind of machine are you planning to use to compress the nitrogen to 10 MPa?
 
  • #3
Sounds like a typical two stage scuba tank compressor would be fine. Keep the destination tanks in flowing tank of water. The compressors have some cooling fins.
http://www.bing.com/images/search?q...4CB3D91543C4B6F&form=CONMHP&conlogo=CT3210127

New tanks are made of aluminium. Old tanks were steel.

The temperature rise in the tank depends on how fast you fill it with respect to how efficiently you cool it.. The temperature rise is more important in the compressor itself, but frankly doing this is typical ordinary compressor stuff.

http://en.wikipedia.org/wiki/Adiabatic_process

The hottest it could get is adiabatic compression. No heat loss.

T initial /P initial = T final/P final
P final * T initial/ P initial = T final
10 MPa * 293 K / 0.1 MPa = 3000 K this is a 100 to 1 compression ratio. A diesel engine operates at 14 to 22 and this ignites the fuel.
 
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Related to Understanding Nitrogen Compression: Implications on Pressure Vessel Design

1. What is compression of nitrogen?

Compression of nitrogen refers to the process of increasing the pressure of nitrogen gas by reducing its volume. It is typically done through mechanical means, such as using a compressor, to achieve a desired pressure level.

2. Why is nitrogen compressed?

Nitrogen is often compressed for various industrial and scientific purposes. It can be used for storing and transporting large quantities of gas in a smaller space, as well as for creating higher pressure levels for specific applications.

3. What is the ideal pressure for compressed nitrogen?

The ideal pressure for compressed nitrogen will vary depending on the specific application. However, it is generally recommended to compress nitrogen to a pressure of 2,000-3,000 pounds per square inch (psi) for most industrial and scientific purposes.

4. How is nitrogen gas compressed?

Nitrogen gas is typically compressed using a compressor, which works by decreasing the volume of the gas and increasing its pressure. The compressed gas is then stored in a tank or cylinder for later use.

5. What are the risks associated with compressing nitrogen?

The main risk associated with compressing nitrogen is the potential for leaks or explosions due to the high pressure levels involved. Therefore, it is important to follow proper safety procedures and use appropriate equipment when working with compressed nitrogen.

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