gas pressure drop equation needed asap please 1

[buckrub231]

I am designing a landfill recovery gas line (primarily 50% methane, 50% carbon dioxide gas) which is under vacuum. I am looking for information for gas pressure drop resulting from pipe reducers and sudden expansions. The gas will be pulled through a 24" pipeline, then through a 60" manhole pump station utilized to knockout condensate. I cannot find any equations for gas distribution that deals with this, can anyone help? Not a mechanical engineer, but a civil and if you can provide both the equation, and define units, etc. I would appreciate it as I do not have reference material if you say to utilize a particular equation. Thanks in advance for all help

 

[SASC]

Buckrub231,

No one has been able to help you? I have a bead on this problem. What is the vacuum source? How much volume are you talking about? What vacuum level? What is the piping made of in this application. Is the gas saturated? Write back!

SASC

 

[mctony]

how do I partern and develop gas flow equations and use them for calculations

 

[ICman]

I suggest you pick up a copy of the "Crane Manual", Crane Company Technical Paper No. 410. It's entitled, "Flow of Fluids Through Valves, Fittings, and Pipe." I have a really old copy (circa 1980), but the formulas are still mostly valid.