Compressible air flow from a tank through a regulator

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SUMMARY

This discussion focuses on calculating the volume of air that can flow through a regulator from a compressed air tank before the output pressure drops below a specified threshold. The tank has a volume of 0.2 liters and an initial pressure of 206.8 bar, while the regulator maintains an output pressure of 58.6 bar. The participants clarify that Boyle's Law is applicable in this scenario despite the compressibility of air, as it governs the relationship between pressure and volume in a closed system. The goal is to determine the thrust generated by varying tank and regulator configurations.

PREREQUISITES
  • Understanding of Boyle's Law and its application to gas behavior
  • Knowledge of pressure-volume relationships in compressible fluids
  • Familiarity with basic principles of fluid dynamics
  • Experience with pressure measurement units, specifically bar
NEXT STEPS
  • Calculate the volume of air using Boyle's Law for the given tank and regulator pressures
  • Explore the implications of compressible flow in gas dynamics
  • Research methods for measuring thrust generated by compressed air systems
  • Investigate different types of regulators and their impact on air flow and pressure
USEFUL FOR

This discussion is beneficial for engineers, physicists, and hobbyists involved in pneumatic systems, particularly those focused on optimizing air flow and thrust calculations in compressed air applications.

gl96
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This is probably a simple question but I am really struggling as to where to start.
We have a tank of compressed air,
Volume of tank (V1) = 0.2litres
Pressure of tank (P1) = 206.8 bar

Regulator Pressure (P2) = 58.6 bar

I would like to find the volume of air that can pass through the regulator before the pressure drops below the 58.6 bar value (i.e. when the output pressure is no longer constant). I assume I couldn't use boyles law for this due to the fact that the air is compressed/compressible or would the flow between the tank and regulator be in-compressible.

Overall we are trying to obtain values for thrust provided by the air (over a range of tanks and regulators) and assumed that this was a reasonable place to start.

Any help would be greatly appreciated.
 
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How the pressure in the tank is reduced is irrelevant to the pressure/volume change in the tank so Boyles Law still applies.
 
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