How to calculate the head of the submersible pump? How to calculate the head of the submersible pump?
The first type: h=D+S+hf1+hf2+h3+ Pd-Ps
The second type: h= D-S+hf1+hf2+hf3+ Pd-Ps
The third type: h= D+S+hf1+hf2+hf3+ Pd-Ps
D——Discharge geometric height, m; value: higher than the pump inlet centerline: positive; lower than the pump inlet centerline: negative;
S——Suction geometric height, m; Value: higher than the pump inlet centerline: negative; lower than the pump inlet centerline: positive;
Pd, Ps——operating pressure in the container, m liquid column (gauge pressure); value: subject to gauge pressure plus or minus
Hf1——resistance loss of straight pipe, m liquid column;
Hf2——Resistance loss of pipe fittings, m liquid column;
Hf3——partial resistance loss at inlet and outlet, m liquid column;
h ——the head of the pump, m liquid column.
The rated head of the submersible pump itself is provided by the manufacturer, and it is on the pump nameplate, and no user calculation is required. When you want to use a submersible pump, and you don’t know how many submersible pumps you need, you should choose the pump according to the flow you want and the actual head you need. The actual required head mentioned here is based on the head required when the pump and its supporting piping system pass the rated flow. This head is equal to the pump’s lifting height (also called static head) plus the total head loss in the pipeline (including partial Head loss and head loss along the way). The formula for calculating the rated head of the pump is H=h+hj+hf
Among them: h——static head; hj——local head loss, hj=∑ζV^2/(2g); hf——head loss along the way, hf=(λL/d)V^2/(2g). If you need to know more about how to calculate the head of the submersible pump, please call me
Post time: 2021-11-30
