Water content of a wetted pipe
Water content of a wetted pipe
(OP)
In order to select a dryer to dry internal parts of piping & equipment after draining them from water, i need to come up w/ amount of water remained on wetted surfaces. Can anyone guide me to a table or formula to look into or calculate this amount. For piping a table that provides amount of water for unit lenght of a pipe for various nominal pipe sizes would be very helpful. Thanks for your assistance.





RE: Water content of a wetted pipe
Air right? Not heated nitrogen or argon or something else?
How long will the pipe "stand" with air flow in the pipe (at the above conditions) to "dry" the interior, if any time at all, before you need it "dry" for your process?
Gravity drain: vertical pipe or horizontal or sloped? If sloped, at what angle from the horizontal?
Are you going to pass a desiccant over the pipe walls? A wiper or pig or rag?
How clean are the pipes that you want to dry? Is the water "standing up" from surface tension on a clean smooth surface, or it is covering the wall because the wall is dirty or oily or covered in scale and mill debris?
"Normal" pipe, or does it have a covering like chrome or plastic or fiberglass?
RE: Water content of a wetted pipe
What temperature, pressure, and humidity is ambient? It is indoor air, temp in range of 72-104degF, atm ; RH in range 40-80% not sure the exact condition at the time we go for it , you may consider the worse case
Air right? Not heated nitrogen or argon or something else? Air
How long will the pipe "stand" with air flow in the pipe (at the above conditions) to "dry" the interior, if any time at all, before you need it "dry" for your process? 5 days,before we blow air into piping to preserve it for long plant overhaul.
Gravity drain: vertical pipe or horizontal or sloped? If sloped, at what angle from the horizontal? piping is combination of them. Consider 1% sloped pipe
Are you going to pass a desiccant over the pipe walls? A wiper or pig or rag? NO
How clean are the pipes that you want to dry? Is the water "standing up" from surface tension on a clean smooth surface, or it is covering the wall because the wall is dirty or oily or covered in scale and mill debris? Standing up from surface tension
"Normal" pipe, or does it have a covering like chrome or plastic or fiberglass? Normal
RE: Water content of a wetted pipe
Then it is a determination of what you mean by "dry". You need to actually figure out what humiditiy level or dew point you are looking at. The lower you go the harder it is and the longer it takes....
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Water content of a wetted pipe
RE: Water content of a wetted pipe
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Water content of a wetted pipe
RE: Water content of a wetted pipe
RE: Water content of a wetted pipe
RE: Water content of a wetted pipe
Experience is an expensive teacher. Measurements (experimental physics) are not easy; much, much more difficult that google-searched "what is the formula?" simplified theoretical formulas using assumed constants and simplified linear relationships.