Pump head algorithm shows that the total head of the pump H includes suction head H1, head lift H2 and all other head loss h. The head of the pump formula that is H = H1 + H2 + h pipeline head loss h = SLQ ^ 2, in addition to sometimes consider the local head loss. The pump flow Q according to water requirements, with the flow Q and total head H then you can start to select the pump model. Pump effective power formula for the N = pgQH pump shaft power formula N1 = pgQH / m, m in the formula for the efficiency of the pump.
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