Acfm

Written by Jerry Ratzlaff. Posted in Properties

formula

\(acfm = scfm \times \frac{P_s}{P_a - (ppm \times RH)} \times \frac{T_a + 460}{T_s + 460}\)

Where:

\(acfm\) = actual Cubic Feet per Minute

\(scfm\) = standard Cubic Feet per Minute

\(P_s\) = standard pressure, psia

\(P_a\) = atmospheric pressure, psia

\(ppm\) = partial pressure of moisture at atmospheric temperature

\(RH\) = relative humidity

\(T_a\) = atmospheric temperature, F

\(T_s\) = standard temperature