Size of pipe needed to transport helium problem

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SUMMARY

The discussion centers on determining the diameter of a pipe required to transport helium at a volumetric flow rate of 0.01 m³/s, a temperature of 15°C, and a pressure of 120 kPa, with a maximum velocity of 40 m/s. The key equation to use is derived from the principle of continuity, which states that the flow rate must remain constant throughout the pipe. The diameter can be calculated using the equation A = Q/V, where A is the cross-sectional area, Q is the volumetric flow rate, and V is the velocity of the fluid.

PREREQUISITES
  • Understanding of fluid dynamics principles, specifically the continuity equation.
  • Familiarity with the ideal gas law and properties of helium.
  • Basic knowledge of pipe flow and cross-sectional area calculations.
  • Ability to manipulate algebraic equations to solve for unknowns.
NEXT STEPS
  • Study the continuity equation in fluid dynamics.
  • Learn how to apply the ideal gas law to calculate properties of gases under different conditions.
  • Research pipe flow calculations, including diameter and flow rate relationships.
  • Explore Bernoulli's equation and its applications in fluid transport systems.
USEFUL FOR

Engineers, particularly those in mechanical and civil disciplines, students studying fluid dynamics, and professionals involved in designing gas transport systems.

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Homework Statement



An engineer is designing a system that requires transporting .01 m^3/s of helium at 15°C and 120 kPa. The velocity of the pipe is limited to 40 m/s. What size (diameter) of pipe is needed?

My question is what equation do i need to solve this problem?

Homework Equations



Im not sure possibly Bernoulli's equation.

The Attempt at a Solution



need equation first
 
Physics news on Phys.org
The problem is not asking you to find any pressure drops or changes in velocity of the helium. The problem is simply this: given the volumetric flow rate and the maximum speed of the helium, what is the diameter of the pipe required to satisfy these constraints? Hint: think continuity.
 

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