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A centrifugal fan is operating at a rotating speed of 500 rpm and is producing an airflow of 1200 ft 3 /min, a system static

A centrifugal fan is operating at a rotating speed of 500 rpm and is producing an airflow of 1200 ft³/min, a system static pressure of 4.6 in. H₂0, and a brake power of 2.6 hp.

a. What rotating speed is required to increase the airflow to 2000 ft³/min?

b. What will be the new system static pressure under the rotating speed in the above question a?

c. What will be the new brake power under the rotating speed in the above question a?

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