gas sizing 1

[tschrage]

I am working on a oil refinery labratory. This is the first labratory I have done. They use a bunch of different process gases in their testing.

helium
hydrogen
nitrogen
argon
oxygen

does anyone have a sizing chart or formula for sizing piping using these gases? I appreciate any input. Thanks

Travis

 

[dcasto]

I can not imagine using any or these gases at a rate high enough to size a line. 1/4" or 3/8" tubing should be more than enough.

 

[tschrage]

that is what I was thinking. They use very little of this gas but for my peace of mind and future reference I was just curious if there is any type of sizing chart or formula I can use to size this stuff.

 

[dcasto]

The weymouth would be good enough, here's on online version :

http://www.lmnoeng.com/Flow/weymouth.htm

 

[BigInch]

Depends on the pressure of the gas, diameter of the tube and length. As far as I know Weymouth would not be suitable for tiny diameters or very low pressure lines. "Piping Handbook", Reno C. King tends to confirm this opinion.

Wemouth Formulas. In 1912 Thomas R. Weymouth presented in an ASME paper his formulas which are generally considered to be the best suited of the empirical formulas for computing the flow of gas through intermediate and high-pressure transmission lines.

Verification tests were conducted on 6" to 22 inch lines.

Fritzsche, Harris or Spitzglass Formulas are some alterantives to consider for lower diameters and pressures.


BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com