Air Pressure Loss through Piping

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Air Pressure Loss through Piping formula

\(\large{ p_l =   \frac  { \mu \;  l \;  v_a{^2}   \;  \rho  }  {24 \; d \; g }   }\)   

Where:

 Units English Metric
\(\large{ p_l }\) = air pressure loss \(\large{\frac{lbf}{ft^2}}\) \(Pa\)
\(\large{ \rho }\)  (Greek symbol rho) = density of air \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\)
\(\large{ \mu }\)  (Greek symbol mu) = friction coefficient of air dimensionless
\(\large{ v_a }\) = air velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\)
\(\large{ g }\) = gravitational acceleration \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\)
\(\large{ d }\) = pipe inside diameter \(in\) \(mm\)
\(\large{ l }\) = length of pipe \(ft\) \(m\)

 

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Tags: Equations for Pressure Equations for Pipe Sizing Equations for Air