What is Power Number?
Power number, Np, is a dimensionless parameter representing impeller power characteristics.
View Industrial Agitator & MixerPower Number Explained
Power number, Np, is a dimensionless parameter representing impeller power characteristics. In industrial mixing, this parameter should be reviewed along with tank geometry, impeller type, fluid properties and operating objective.
Common Applications
- Motor sizing
- Scale-up
- Impeller comparison
- Power estimation
Selection Factors
Correct selection depends on the process objective and site conditions. For Power Number, Premix usually reviews these points before recommending equipment:
- Impeller type
- Reynolds number
- Baffle condition
- Tank geometry
Why It Matters In Plant Operation
Power Number affects process stability, chemical usage, equipment life and final output quality. A correctly selected solution helps reduce trial-and-error at site and supports more predictable daily operation.
Frequently Asked Questions
What is Power Number?
Power number, Np, is a dimensionless parameter representing impeller power characteristics.
Where is Power Number commonly used?
It is commonly used in Motor sizing, Scale-up, Impeller comparison, Power estimation.
How does Premix select Power Number?
Premix reviews Impeller type, Reynolds number, Baffle condition, Tank geometry along with the plant layout and maintenance requirement.