Description: Design flow rate in the inlet cross-section of the system divided by the inlet cross-section of the system; Name: Average design speed in the plant inlet
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 proportion of the pump power input, p, available after satisfying the mechanical power losses, pj,ab, at given operating conditions; Name: mechanical efficiency