Process Manufacturing worked example

Mixer Power Load with estimated agitator load of 9 kW: a worked example

Suppose estimated agitator load falls to 9 kW. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate mixer power load from batch demand, service factor, and planned run time.

The inputs for this scenario

  • Estimated agitator load: 9 kW (the input this scenario stresses; the baseline uses 18)
  • Viscosity and duty service factor: 1.25 x (held at the documented default)
  • Planned mixing runtime: 3.5 hr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Mixer power load = estimated agitator load × service factor.
  • Total load works out to 11.25 kW at these inputs, and this is the headline figure for the scenario.
  • mixer power per mixing hour works out to 3.21 kW / hr at these inputs.
  • estimated agitator load works out to 9 kW at these inputs.
  • viscosity and duty service factor works out to 1.25 x at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where estimated agitator load sits at 18 kW and the headline result is 22.5 kW, this scenario comes in 50% below the baseline at 11.25 kW.
  • It multiplies the estimated agitator load by a viscosity/duty service factor to give the total power load in kW, then divides by runtime for power per mixing hour. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total load: 11.25 kW (headline result)
  • mixer power per mixing hour: 3.21 kW / hr
  • estimated agitator load: 9 kW
  • viscosity and duty service factor: 1.25 x

Run it with your numbers

  • To rerun this with your own numbers, open the live Mixer Power Load calculator, set estimated agitator load to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.