Air Pipe Sizing

Air Pipe Sizing formula

\(\large{ d = 12 \; \sqrt {   \frac { 4 } { \pi }   \;  \frac { Q_a  } {60 \; v_a}      }  }\)

Where:

\(\large{ d }\) = pipe inside diameter, inches

\(\large{ Q_a }\) = air flow rate, actual ft³ per minute [acfm]

\(\large{ v_a }\) = air velocity, ft/sec

\(\large{ \pi }\) = 3.14159