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Delivery Velocity to Reservoir

Delivery Velocity to Reservoir

Delivery Velocity to Reservoir

(OP)
Hi,
I would like to know if there are some rule of thumbs for delivery velocity in a fluid (jet fuel) line that is pumped to a reservoir. I found a rule of thumb of 10-15 ft/s for oil return lines, which i believe would be my situation. If anyone happens to have more useful information, please let me know.
Thank you,
Gabriel

RE: Delivery Velocity to Reservoir

What kind of "reservoir" and what material is the reservoir made of?  That limit for oil lines is based on not exceeding typical large storage tank wall stress from the thrust reaction of the jet.  And its 3 fps for limiting static charge when filling hydrocarbons from above the tank liquid level.  Are you top or bottom filling?

See,
http://www.fiberglasstankandpipe.com/handlingpetrol.htm

**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/

RE: Delivery Velocity to Reservoir

If I may add, it REALLY depends on what you are doing.

Rules of thumb are almost always one-dimensional--you have a maximum flow rate of hydrocarbon liquid into the top of a tank of 3 ft/s to limit static.  If your dimension was "erosion" then the number would be different (maybe 100 / rho^0.5), if it was trying to limit wasted pump hp it would be different yet.

Trying to do Engineering design with an inappropriate "Rule" will often end badly (use the erosion number above to put a 0.72 SG jet fuel into the top of a tank and the 17 ft/s allowed could easily blow up the tank).

David

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