Question on a Compressed Air Leak
Question on a Compressed Air Leak
(OP)
Does anybody know how to calculate the CFM on a compressed air leak when the air is not blowing into the atmosphere but into a liquid like the pickling acid?
I am trying to replace a compressed air bubble-system agitator with an energy efficient eductor in a tank mixing application. However, I do not know how to estimate the amount of air that is currently being blown through the agitator. I know that the agitator is currently blowing compressed air from a 1/8” pipe, and the CA line pressure is 95 psig. I do not know the density or the temperature of the acid being mixed but I can easily get that information if I find some use for it. Is there an equation for CA leaks that deals with the situation of leaks underwater or other liquids?
Please help
I am trying to replace a compressed air bubble-system agitator with an energy efficient eductor in a tank mixing application. However, I do not know how to estimate the amount of air that is currently being blown through the agitator. I know that the agitator is currently blowing compressed air from a 1/8” pipe, and the CA line pressure is 95 psig. I do not know the density or the temperature of the acid being mixed but I can easily get that information if I find some use for it. Is there an equation for CA leaks that deals with the situation of leaks underwater or other liquids?
Please help





RE: Question on a Compressed Air Leak
k= ratio of Cp/Cv
g=gravitational constant
o
RE: Question on a Compressed Air Leak
http://www.scottsemicon.com/Ref_Airflow.html
bobc
RE: Question on a Compressed Air Leak
zekeman, that equation seems to be a standard air-leaks equation only with a correction factor for the discharge pressure in the liquid, pressure being dependant on the depth. Do you know if viscosity of the liquid plays any role in the cfm output?
bobc, I believe that the link you provided only explains how to handle gasses other than air being compressed. Would you happen to have any quick-lookup cheat sheets on compressed air being discharged into a liquid?
Kisic7
RE: Question on a Compressed Air Leak
ANSI/FCI 70-2 used to convert air/N2 leakage rates in valves as
"1 Bubble/minute = 0.15 ml/min"
so I guess a bubble = 0.15 ml