Description: rated flow rate divided by the inlet area of the plant ; Name: Average nominal velocity in the inlet area of the plant
Description: Rated flow at the inlet area of the installation divided by the inlet area of the installation; Name: Mean rated velocity at inlet area of the installation
Description: determined through a surface, product of the sound pressure, p, and the component of the particle velocity, un, at a point on the surface in the direction normal to the surface, integrated over that surface; Name: sound power