A centrifugal pump has the following specifications a uniform impeller thickness of 4 in , an inlet radius of l ft, an outlet radius of 2 5 ft, i 120, and 135 The pump delivers a flow rate of 70 cfs (ft3 sec) in overcoming a head of 33 ft If the pump rotates at such a speed that no tangential veloc...

With no tangential velocity at the inlet Vti 0 and from Fig 53 we see that ...

A centrifugal pump has the following specifications: a uniform impeller thickness of 4 in., an inlet radius

Question:

A centrifugal pump has the following specifications: a uniform impeller thickness of 4 in., an inlet radius of l ft, an outlet radius of 2.5 ft, βi = 120°, and β = 135°. The pump delivers a flow rate of 70 cfs (ft3/sec) in overcoming a head of 33 ft. If the pump rotates at such a speed that no tangential velocity component exists at the inlet (shockless entry), what is the rotational speed (in rpm) of the pump? Also calculate the power input (in hp) to the pump.