Understanding Nitrogen Compression: Implications on Pressure Vessel Design

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SUMMARY

This discussion focuses on the implications of nitrogen compression in pressure vessel design, specifically targeting a compression up to 10 MPa. The use of a two-stage scuba tank compressor is recommended for this purpose, with cooling measures such as submerging destination tanks in water to manage temperature rise. The temperature increase during compression is primarily influenced by the rate of filling and cooling efficiency, with adiabatic compression being a critical factor. Calculations indicate that a 100 to 1 compression ratio can lead to a final temperature of approximately 3000 K.

PREREQUISITES
  • Understanding of adiabatic processes in thermodynamics
  • Familiarity with pressure vessel design standards
  • Knowledge of compressor types, specifically two-stage scuba tank compressors
  • Basic principles of gas laws and temperature-pressure relationships
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  • Research the design specifications for pressure vessels using aluminium and steel materials
  • Learn about the thermal dynamics of adiabatic compression in gases
  • Investigate cooling techniques for high-pressure gas systems
  • Study the operational parameters of two-stage compressors for optimal performance
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Engineers and designers involved in pressure vessel construction, mechanical engineers focusing on gas compression systems, and professionals seeking to optimize the performance and safety of high-pressure applications.

Rezo
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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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Well, what kind of machine are you planning to use to compress the nitrogen to 10 MPa?
 
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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