Intermediate Heads Differential pressure
Intermediate Heads Differential pressure
(OP)
In a reactor having 2 chambers, uper chamber having a design pressure of 10 kg/cm2 & lower chamber having a design pressure of 12 kg/cm2. The differential pressure is 1.5 kg/cm2.
Can we calculate intermediate Head thickness using differential pressure as a design pressure?
Can we calculate intermediate Head thickness using differential pressure as a design pressure?





RE: Intermediate Heads Differential pressure
First, units of mass/area does not equal units of pressure - which are force/area. kg/cm^2 does not conform to ANY system of units.
Second - will there be any situation (foreseeable or not foreseeable) when only one chamber could be pressurized while the other one is not? I include hydrotest in the list of situations. You'll need to ask your process engineer about that.
RE: Intermediate Heads Differential pressure
Here in the US, we go through school learning inch-pound system and SI system- but never use the kg/cm^2- but I notice it's not at all uncommon on non-US items such as mill test reports. It's exactly the same reasoning as our lbf and lbm units.
RE: Intermediate Heads Differential pressure
http://ww
Unit Conversion Program---unconvert.zip
This is a great freebie from a good bunch of folks.
With due regards to TGS4,this program will convert those units for you.
RE: Intermediate Heads Differential pressure
RE: Intermediate Heads Differential pressure
jt
RE: Intermediate Heads Differential pressure
jte: Only if the WPS restricts welding during the full moon.
RE: Intermediate Heads Differential pressure
jte - and only if inspected by a left-handed, blue-eyed inspector.
You know, it's almost St. Patrick's day - the day where we're all a little irish - and can enjoy the guinness. Is it Friday yet???
Actually - I was reminded of the units issue upon reading of the successful insertion-into-orbit of the latest NASA Mars satellite. Remember the one a few years ago that smeared itself on the surface of the red planet b/c of a units snafu?
RE: Intermediate Heads Differential pressure
The Canadian metric police decreed that on a particular day, aircraft fuel loads must be reported in kg instead of lbs. As you know many accidents are the result of more than one simultaneous problem.
There were a series of "issues" concerning the fuel load. The fuel load was 20,400 lbs. It should have been 20,400 kg.
Somewhere over western Ontario the aircraft ran out of fuel.
Two factors saved the flight. One of the pilots had glider experience and the other had flown out of a military airport (Gimli) near Winipeg years ago. They could not make the Winipeg airport which is west of the city but they could make it to the former military strip which is north-east of Winipeg.
It was later reported that Beoing set up the problem in a flight simulator and their test pilots "Crashed" the first three atempts to re-enact the flight.
There was a movie made of the story. It comes around occasionally on late night television.
http://en.wikipedia.org/wiki/Gimli_Glider
yours
RE: Intermediate Heads Differential pressure
RE: Intermediate Heads Differential pressure
Soft and Hard metric is the most recent catch-all.
Fortunately the Code Committees are beginning to give us some guidance. Hear the meetings are quite interesting.
RE: Intermediate Heads Differential pressure
RE: Intermediate Heads Differential pressure
RE: Intermediate Heads Differential pressure
"And you can measure volume in units of acres^1.5." Those were the days, even though the corrections for atmospheric pressure and the phase of the moon were somewhat onerous.
I understand that one of the reasons the cube root of a gallon fell out of favor as a unit was the confusion resulting from the American insistance on a gallon of Coors, while the British preferred a gallon of Guiness.
yours
RE: Intermediate Heads Differential pressure
Thank you