Description: Ratio of the power requirement P of the pump reduced by the mechanical power losses P_j,ab to the power requirement of the pump under certain working conditions; Name: mech eff
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
Description: difference between the total energy height on the outlet side of the pump aggregate and the total energy height of the intake side of the pump aggregate ruling at operating point; Name: nominal feed height