Natural gas line sizing with regulator
Natural gas line sizing with regulator
(OP)
I'm working on sizing a natural gas line for engine fuel supply but am unsure how to include the line pressure regulator (Fisher 299H) in my flow/p-drop calcs. The regulator manufacturer doesn't supply droop (or pressure drop) numbers for the regulator, only rated capacity figures. The rated capacity is sufficient for the required flow rate and my line size (with fittings, etc...) is large enough (using Q =K1*D^2.623*((P1^2-P2^2)*Y/(Cr*L*F))^.541). I know the regulator has a set pressure drop (which is why it's there) but I need to know the flow-related pressure drop so I can include it with my other inline equipment. I can't find any info relating to gas pipeline calculations with a regulator.
The inline sequence is: OBV->OBV->filter->OBV->regulator->OBV->mass flowmeter->OBV->hose->engine integral regulator->carb
where: OBV = open ball valve, and
tees and elbows are interspersed throughout.
The inline sequence is: OBV->OBV->filter->OBV->regulator->OBV->mass flowmeter->OBV->hose->engine integral regulator->carb
where: OBV = open ball valve, and
tees and elbows are interspersed throughout.





RE: Natural gas line sizing with regulator
RE: Natural gas line sizing with regulator
RE: Natural gas line sizing with regulator
Use that as the pressure out of the regulator.
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: Natural gas line sizing with regulator
RE: Natural gas line sizing with regulator
If you are looking to control flow, you need a flow control valve.
Hope this answers some of your question.
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: Natural gas line sizing with regulator
http://virtualpipeline.spaces.msn.com
RE: Natural gas line sizing with regulator
Attached is a link that will help you understand regulator sizing.
http://w