1116 Sensitivity Of Load To Motor

When employing electric motors, for air moving equipment, it is important to remember that the performance of fans and blowers is governed by certain rules of physics. These rules are known as "The Affinity Laws" or "The Fan Laws." There are several parts to it, and are all related to each other in a known manner and when one changes, all others change. For centrifugal loads, even a minor change in the motor's speed translates into significant change in energy consumption and is especially troublesome when the additional air flow is not needed or useful. Awareness of the sensitivity of load and energy requirements to motor speed can help effectively identify motors with specific performance requirements. In most cases we can capture the full energy conservation benefits associated with an energy efficient motor retrofits.

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