ABSTRACT

A pump is installed to move water when existing pressure is inadequate. In determining the amount of pressure a pump must provide to get the job done, the nomenclature of pump heads was established. The vertical distance from the water surface on the suction side, to the pump centerline, is the Static Suction Head. In order to calculate the cost of operating a pump, it is necessary to equate the amount of water moved to units of electrical energy consumed in moving that water. Overpumping an aquifer can have permanent effects on the land itself: sinkhole formation, and in areas proximate to the ocean, saltwater intrusion. The Total Dynamic Head in the system is the sum of the Dynamic Suction Lift and the Dynamic Discharge Head - and it includes friction losses on both sides of the pump.