Does the design pressure of a pressure vessel refer to absolute pressure or gauge pressure?
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I would like to ask whether, on the drawings of pressure vessels, the value indicated is absolute pressure or gauge pressure. Should we specify absolute pressure when putting forward requirements to the equipment specialists? I have another question. On page 3-32 of the second volume of the \"Chemical Process Design Handbook\" (third edition), there is a pressure unit denoted as MPa.G. I’m not sure what the \"G\" stands for
A “G” indicates gauge pressure, while an “A” indicates absolute pressure. :handshake
It should be absolute pressure! :handshake
Gauge pressure (relative pressure) unit: MPa(G); Absolute pressure unit: MPa(A)
If not specified, it should be absolute pressure
Agree with what was said on the 2nd floor; under normal circumstances, it is absolute pressure
For general absolute pressure, unless otherwise specified, a vessel at atmospheric pressure has an absolute pressure of less than 1 kilogram
It is basically gauge pressure. G indicates gauge pressure
When providing parameters to the equipment specialists, gauge pressure is generally used.
The design pressure of a pressure vessel refers to gauge pressure
The pressure of pressure vessels is, unless otherwise specified, generally gauge pressure. When calculating the parameters of compressors, gauge pressure is often used for simplicity, and this point needs to be given special attention
The statement on the 2nd floor is correct. For high-pressure equipment, the difference between gauge pressure and absolute pressure is small; whereas for low-pressure equipment, the difference between these two pressures is relatively large, and this should be taken into account.
Let’s omit one more: N represents cubic meters
The condition specified in the design generally refers to gauge pressure
Under normal circumstances, it should be gauge pressure
The design pressures in the design are all absolute pressures, expressed in MPa (a)! ! !
The design pressure on pressure vessels should be gauge pressure.
It is generally gauge pressure; you can check it on the nameplate. If it is MPa.g, it indicates gauge pressure. MPa·a represents absolute pressure.
Personally, I think it should be gauge pressure.
It should be gauge pressure; a pressure gauge shows gauge pressure, and unless otherwise specified, it is generally gauge pressure