Question

Select a Goulds 3196 pump to operate at 3560 rpm to deliver 500 gpm of water at a head of 250 ft. What impeller diameter should be installed in the pump

Answer 1

Answer:

Impeller diameter should be 0.02 meter

Explanation:

The Impeller diameter is a parameter with a circular design of a high speed pump. The performance of the pump depends on this parameter.

As per the given data

Speed of pump = 3,560 rpm

Rate of water flow = 500 gpm = 0.0005 m^3/minutes

Size of head = 250 ft = 250 ft x 0.3048 m/ft = 76.2 m

The impeller diameter can be calculated using following formula

Impeller diameter =0.1 x  $\sqrt{Water flow rate X 60}$

Impeller diameter =0.1 x  $\sqrt{0.0005 X 60}$

Impeller diameter =0.1 x  $\sqrt{0.03}$

Impeller diameter = 0.1 x 0.1732

Impeller diameter = 0.01732

Impeller diameter = 0.02 m