Pressure vessel leakage - time to equalize

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SUMMARY

The discussion centers on calculating the time required for a pressurized dry nitrogen vessel to equalize its internal pressure with atmospheric pressure, given a specific leakage rate. The problem involves complex factors such as compressible flow, choked flow, and temperature variations due to gas expansion. Milton Beychok's website is recommended as a valuable resource for understanding these concepts. Accurate calculations are essential for safety and efficiency in managing pressure vessels.

PREREQUISITES
  • Understanding of compressible flow dynamics
  • Knowledge of choked flow principles
  • Familiarity with gas expansion and temperature effects
  • Basic skills in pressure vessel design and safety
NEXT STEPS
  • Research the equations governing compressible flow in pressure vessels
  • Study the principles of choked flow and its implications in gas leakage
  • Explore temperature effects on gas behavior during expansion
  • Review safety standards and best practices for managing pressurized vessels
USEFUL FOR

Engineers, safety professionals, and technicians involved in the design, maintenance, and operation of pressure vessels, particularly those working with gases like nitrogen.

Dwarf
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Hi all, I have a problem I hope someone could help. I have a pressurized dry Nitrogen vessel. Given a known leakage rate, how long will it take for the internal pressure to be equal to atmospheric pressure?
 
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Take a look at Milton Beychok's website for a good reference on this. It's a tricky problem when considering compressible, choked flow with a varying temperature due to expansion.

http://www.air-dispersion.com/feature2.html
 
Thanks, Fred. That help.
 

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