Normal volume flow / Working volume flow
Normal volume flow
Unit: Nm3/h, Nm3/min, Nm3/s ...
The normal volume flow refers to the physical normal condition of gas at
1.01325 bar (abs.) und 0 °C. The normal volume flow is named as Norm-m³ (Nm³)
also.
Working volume flow
Unit: m3/h, m3/min, m3/s ...
The working volume flow is the effective volume flow of the compressed gas.
To compare the working volume flow with other volume flows it's necessary to
specify besides the unit the pressure of the compressed gas.
With the formula for ideal gases it's possible to convert normal volume flow
and working volume flow:
p1 * V1 / T1 = p2 * V2 / T2
p = Pressure (abs.); T = Temperatur in K; V = Volume flow
This formula is valid for ideal gases only. For real gases it's possible to
get differences.