Description: The ratio the theoretical required power to the shaft power; Name: overall efficiency
Description: determined proportion of the driver power input, pmot, delivered as pump power output, pu; Name: overall efficiency
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed