steam pressure conversion
steam pressure conversion
(OP)
How can I determine the pressure of a steam that is given in an old book as e.g.
steam 80# ga
What does 80# mean?
What conversion factor is necessary to convert it into bar or Pascal?
Thanks
Andreas
steam 80# ga
What does 80# mean?
What conversion factor is necessary to convert it into bar or Pascal?
Thanks
Andreas





RE: steam pressure conversion
"Scientists dream about doing great things. Engineers do them." -James Michener
RE: steam pressure conversion
One of our esteemed forum members KATMAR has a freeware that is sweet for doing conversions. Visit him at www.katmarsoftware.com for a free download.
rmw
RE: steam pressure conversion
"Scientists dream about doing great things. Engineers do them." -James Michener
RE: steam pressure conversion
RE: steam pressure conversion
I often encountered refinery steam line marked as 50 pound steam. General speaking, Does it mean gauge pressure(50psig) or absolute pressure(50psia)?
Thanks.
Yung
RE: steam pressure conversion
The only exception is that when a pressure is given in mmHg (millimeters of mercury) then it is usually an absolute pressure. I guess this is because it is usually chemists or physicists who use this unit of pressure and scientific (as opposed to engineering) work generally concerns absolute pressures. Perhaps the unit "atmospheres" falls in the same category.
Of course there are exceptions to these common practices and we should always try to label our pressures as gauge or absolute to remove the doubt.
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: steam pressure conversion
Consider the circumstances.....if you are looking at a PID for a process chem plant steam system, "50 pound" steam is only really interesting (or relevant) when the units are in psig.
Lab settings or vacuum systems....possibly different.
-MJC
RE: steam pressure conversion
Knowing absolute pressures at these low values is critical.
At a 950 psi steam, or in a 4500 psi gas line, the 14.7 atmospheric pressure to gage pressure conversion is (almost always) "assumed" to be made: the gage is always needed to reference gage pressure. That is, psig is the only pressure that makes sense.
RE: steam pressure conversion
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: steam pressure conversion
rmw