HVAC Air Distribution Practice Questions - HVAC Excellence Professional - Air Distribution (Written Examination) Exam

According to the fan laws, if a blower's speed is increased from 800 RPM to 1,000 RPM, the airflow (CFM) will:

Increase by the ratio 1,000/800, about 25 percent Increase by the square of the ratio, about 56 percent Increase by the cube of the ratio, about 95 percent Stay the same because CFM is independent of RPM

Correct Answer:

Increase by the ratio 1,000/800, about 25 percent

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