Liquid velocity
Liquid velocity
(OP)
Which code or standard provides the velocity rates for liquids in piping or a pipeline.
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RE: Liquid velocity
lots of people mis quote API RP 14E, which needs to be used with (great) caution.
If you mean something else then please be a bit more specific in your question.
Anything more than 5-7 m/sec is unusual as it normally just generates too much pressure drop, but it all depends on your process, fluid, degree of use etc etc.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Liquid velocity
RE: Liquid velocity
Reasonable Velocities for the Flow of Water through Pipe (from Cranes Technical Paper 410):
Boiler Feed.............8 to 15 ft/sec
Pump Suction ............4 to 7 ft/sec
General Service.........4 to 10 ft/sec
City.......................to 7 ft/sec
Transmission Pipelines...3 to 5 ft/sec
Go to a basic hydraulics book. Try Cranes Technical Paper 410 as a reference for the above velocities.
http://www.eng-tips.com/viewthread.cfm?qid=111206
http://www.amazon.com/Fluids-Through-Valves-Fittin...
RE: Liquid velocity
RE: Liquid velocity
There is no "piping code requirements" as is so often requested by newbies on these for a....
The most authoritative source for this velocity information is "The Piping Handbook" by Nayyar. An entire chapter is devoted to this topic. The information contained within the handbook is identical to that proposed by the ancient, but venerable Crane TP #410.
It should be noted that both guidelines also contain suggested velocity ranges for saturated and superheated steam piping velocities.
MJCronin
Sr. Process Engineer
RE: Liquid velocity
MJCronin
Sr. Process Engineer
RE: Liquid velocity
If you are using some types of Cu alloy piping, there are lower limits also.
RE: Liquid velocity
For piping, noise, risk of deposition and erosion may be the main concerns, whereas for pipeline, dP, flow regime and perhaps erosion may be the main concerns.
Best regards, Mortebn