Calculation method of deep well pump head

Calculation method of deep well pump head
   Deep well water pump itself rated by the manufacturers to provide, pump nameplate, no user calculation. When you want to use the deep well pump, and the lift I do not know how much of the submersible pump, it is necessary according to your desired flow and the actual need to select the pump head. The actual lift required here is based on the head required for the pump and its associated piping system to pass through the rated flow, which is equal to the lift height of the pump (also called static lift) plus the total head loss in the line Head loss and head loss along the way). With the formula, the pump rated head H = h + hj + hf
Where: h - static head; hj - local head loss, hj = ΣζV ^ 2 / (2g); hf - head loss along the way, hf = (λL / d) V ^ 2 / (2g).