Absolute Pressure

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Absolute PRESSURE

A pressure at absolute zero can only exist in a total vacuum and any pressure above this is called absolute pressure.

absolute PRESSURE FORMULA

\(absolute \; pressure  \;=\;  gauge \; pressure \; + \; atmospheric \; pressure  \)

\(p_a =  p_g \; + \; p_{atm}  \)

Where:

\(p_a\) = absolute pressure

\(p_g\) = gauge pressure

\(p_{atm}\) = atmospheric pressure

Solve for:

\(p_g =  p_a \; - \; p_{atm}  \)

\(p_{atm} =  p_a \; - \; p_g  \)

 

Tags: Equations for Pressure