Calculating Fan Speed (RPM) Formula

What formula can be used to calculate fan speed (RPM)?

Select one:

A. Fan RPM = Motor RPM x Fan Sheave Diameter / Motor Sheave Diameter

B. Fan RPM = Motor Sheave Diameter x Fan Sheave Diameter

C. Fan RPM = Motor Sheave Diameter / Motor RPM

D. Fan RPM = Motor RPM x Motor Sheave Diameter

Answer:

The correct formula to calculate fan speed (RPM) is Fan RPM = Motor RPM x Fan Sheave Diameter / Motor Sheave Diameter.

The formula to calculate fan speed (RPM) is Fan RPM = Motor RPM x Fan Sheave Diameter / Motor Sheave Diameter. This formula takes into account the motor RPM and the diameters of the motor sheave and the fan sheave.

Explanation:

The formula considers the motor RPM (revolutions per minute) and the diameters of the motor sheave and the fan sheave. By multiplying the motor RPM by the fan sheave diameter and then dividing by the motor sheave diameter, you can determine the fan speed in RPM.

For example, if the motor RPM is 1000 and the fan sheave diameter is 10 inches while the motor sheave diameter is 5 inches, the fan RPM would be 2000 RPM.

It's essential to have the correct values for motor RPM, fan sheave diameter, and motor sheave diameter to accurately calculate the fan speed. Understanding this formula can help in optimizing fan performance and efficiency.