Description: Ratio of the conveying power to the power absorbed by the drive; Name: Overall efficiency (of the pump unit)
Description: proportion of the driver power input, pmot, delivered as pump power output, pu; Name: overall efficiency
Description: amount of the absolute value of the total head above the head, equivalent to the vapour pressure of the liquid at the particular temperature, with reference to the NPSH datum plane; Name: net positive suction head