Inline duct fans [Fans, Pumps, Compressors] |
Merits of inverter drives
When you don't need 100% air-flow, you can decrease motor speed of "Inline duct fans".
In this case, it will save a lot of energy.
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In generally,
Airflow: proportional to motor rotation
Load torque: proportional to the second power of motor rotation
Energy: proportional to the third power of motor rotation
ex. Motor rotation is changing 1500min-1 to 1350min-1 (-10%).
Airflow: 90%
Load torque: 81%
Necessary power: 72.9%
Actual necessary power:
72.9% / [inverter efficiency(95%)] = 77%.
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Constant torque and variable torque characteristics
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