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Centrifugal pump capacity Q=22 l/s, running at speed n=2890 rpm to Determine the allowable suction head, if the suction pipe diameter d=125 mm, and its length l=3 m Factor in the formula Rudneva is taken equal to C=900. Water temperature t=20°C. the Coefficient of 0,2 knee. The resistance coefficient of the inlet of the pipe is 1.8. The equivalent roughness of the pipe wall R=0.15 mm.
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