80% quality steam and erosion velocities
80% quality steam and erosion velocities
(OP)
I have looked almost everywhere in order to find recommended erosion velocities for wet i.e. 80% quality steam and have not found much data. What I have found (in Crane and other text books) is that one must design pipes for less than the 100% (saturated) velocities. But Crane and others do not state how much lower.
Of course the best is to have actual pipe thickness monitoring data.
Does anyone have more information?
Of course the best is to have actual pipe thickness monitoring data.
Does anyone have more information?





RE: 80% quality steam and erosion velocities
If you are genuinely working with 80% quality steam, I would recommend that you start with fixing the separators before you go over-sizing all your pipework to cope with this terrible stuff.
RE: 80% quality steam and erosion velocities
Separate the condensate from the steam, or reheat it, or do SOMETHING to dry it.
If you are flowing a steam velocity of much less than 100ft/sec (30m/sec) there is a real possibility of slug flow which will lead to water hammer.
Valce manufacturers caution against liquid velocities exceeding 50 ft/sec. Wet steam can cause some nasty erosion because of high velocity droplet impingement.
RE: 80% quality steam and erosion velocities
For erosion-corrosion have a look at
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RE: 80% quality steam and erosion velocities
RE: 80% quality steam and erosion velocities
I am familiar with the Spirax Sarco website, but the website does not offer information on this type of steam piping. I have also spoken to one of my colleagues at Spirax Sarco and they are not familiar with this type of operation and thus could not offer additional information.
RE: 80% quality steam and erosion velocities
I am glad that you confirmed the lack of information on steam injection lines for heavy oil as well. I have looked in almost every text book on steam lines and even heavy oil production and cannot find information on erosion velocities in steam injection lines.
In addition, I could not get any erosion monitoring data either.
RE: 80% quality steam and erosion velocities
= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: 80% quality steam and erosion velocities
GE has a good tech info on their site, and HEI might be some help.
So does sugar, so go look around on the www.sugartech.co.za site.
People that handle moisture in vapor streams might also have info. Try Munters and Koch/Glitsch.
I don't know if any of those places have what you need, and I am not going to go look for you, but if confronted with your problem, that is where I would start.
rmw
RE: 80% quality steam and erosion velocities
RE: 80% quality steam and erosion velocities