Steam pipe thrust calculation
Steam pipe thrust calculation
(OP)
I'm trying to calculate the thrust load on a 3" HPS elbow, Sch. 80, welded construction, for an underground direct-bury application. I don't typically work with steam, so I'd like a check of my numbers.
This is a 3" branch pipe off an 8" HPS main at 175 PSIG. Design velocity is 5000 FPS.
The equation asks for fluid SG, pipe ID, velocity, angle of bend, and gauge pressure. Using a saturated vapor density of 0.38408 LBM/FT3, I get a SG of 0.006152. Is this correct?
Plugging the other values into the equation yields:

Are these numbers accurate? 20,000 LBF seems like a lot for a 3" pipe.
Calculations based on this page: Link
Thanks in advance for checking my work.
-Clymber
This is a 3" branch pipe off an 8" HPS main at 175 PSIG. Design velocity is 5000 FPS.
The equation asks for fluid SG, pipe ID, velocity, angle of bend, and gauge pressure. Using a saturated vapor density of 0.38408 LBM/FT3, I get a SG of 0.006152. Is this correct?
Plugging the other values into the equation yields:

Are these numbers accurate? 20,000 LBF seems like a lot for a 3" pipe.
Calculations based on this page: Link
Thanks in advance for checking my work.
-Clymber





RE: Steam pipe thrust calculation
That's 3 times the speed of sound.
Not surprised there's 10 tonnes force on your 3" elbow.
Anyway, if its buried and a fully welded system, what's your issue?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Steam pipe thrust calculation
http://www.engineeringtoolbox.com/forces-pipe-bend...
RE: Steam pipe thrust calculation
RE: Steam pipe thrust calculation
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Steam pipe thrust calculation
RE: Steam pipe thrust calculation
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Steam pipe thrust calculation
RE: Steam pipe thrust calculation
RE: Steam pipe thrust calculation
RE: Steam pipe thrust calculation
Please advise where the OP mentions expansion joints or indeed anchors? Also the OP makes no reference to thermal expansion considerations. Don't read things into a question which are not there!
RE: Steam pipe thrust calculation
RE: Steam pipe thrust calculation
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.