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The standard state is 0 degrees. The pressure is 1 atmosphere. Is this gauge pressure or absolute pressure?

2011-01-10View Original

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As the title says! When it is necessary to convert gas conditions from operational status to standard conditions (0 degrees, 1 atmosphere), the equation pv=nRT is used; how should the pressure under these standard conditions be determined? Absolute pressure, or gauge pressure? Thank you!
Reply #22011-01-10
Absolute pressure = Gauge pressure + Atmospheric pressure
Reply #32011-01-10
Reply 1# emmy: The pressure under standard conditions refers to absolute pressure.
Reply #42011-01-10
Pressure is expressed in absolute pressure, which is gauge pressure plus atmospheric pressure.
Reply #52011-01-10
Absolute pressure +1 is calculated using absolute pressure; gauge pressure already has the atmospheric pressure removed
Reply #62011-01-11
It is absolute pressure; gauge pressure is absolute pressure plus atmospheric pressure
Reply #72011-01-11
In the formula, P represents absolute pressure, with the unit being Pa. Atmospheric pressure refers to an absolute pressure of 101325 Pa; gauge pressure is 0. Atmospheric pressure can be either gauge pressure or absolute pressure
Reply #82011-01-11
Gauge pressure is supposed to be used in the design, right?
Reply #92011-01-11
Gauge pressure is supposed to be used in the design, right?
Reply #102011-01-11
In the ideal gas law, P represents absolute pressure, but pressure gauges generally display gauge pressure. Gauge pressure = Absolute pressure + 1 atmosphere

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