Static Pressure Question
Static Pressure Question
(OP)
There is something that I would like to ask: Is there a Hydrostatic pressure present in closed system (filled with liquid) if pressure pumped into system is higher than static head? My answer would be that as long as we are within gravity field there must be static head present. Some of my coworkers disagree and say that is true only for an “open” system, while in a “closed” system static head is not present.
I am confused as those guys are more knowledgeable than I.
Thanks
I am confused as those guys are more knowledgeable than I.
Thanks





RE: Static Pressure Question
You're on the right track, and don't let some "old hands" confuse you - you can't argue with first principles!
RE: Static Pressure Question
In an open tank, total pressure is = atmospheric press + hydrostatic head
In a closed tank, total pressure is = vapor space press + hydro static head
The effect of outside atmospheric pressure is eliminated since there is usually a blanket gas providing the pressure.
RE: Static Pressure Question
RE: Static Pressure Question
RE: Static Pressure Question
KRB
RE: Static Pressure Question
RE: Static Pressure Question
"Most gauges in use are "Gauge Pressure" gauges."
"Gauge Pressure" gauges are referenced to atmospheric pressure.
"Absolute Pressure" gauges are referenced to vacuum.
Both types of gauges are in common use.
You usually can not "calibrate" a "Gauge Pressure" gauge to be an "Absolute Pressure" gauge, and vice versa. I haven't seen one that can do that yet.
RE: Static Pressure Question