Industrial Filtration, Separation & Dust Collection worked example

Fan Horsepower with connected dust collector fan load of 75 kW: a worked example

Push connected dust collector fan load up to 75 kW and the picture changes. This example computes every intermediate figure at that operating point. Use it when evaluating dust collector fan power, pressure drop changes, airflow increases, or motor and fan upgrade options.

The inputs for this scenario

  • Connected dust collector fan load: 75 kW (raised for this scenario; the documented default is 30)
  • Fan operating runtime: 2,000 hr (unchanged)
  • Blended electricity price: 0.13 $ / kWh (unchanged)
  • Collectors or lines served: 1 collectors (unchanged)

Working through the calculation

  • Applying the documented formula (Fan energy cost = connected dust collector fan load × fan operating runtime × blended electricity price) to the inputs above produces each figure below.
  • At this operating point the engine returns 19,500 $ for fan energy cost, the number this scenario is built around.
  • At this operating point the engine returns 150,000 kWh for energy used.
  • At this operating point the engine returns 19,500 $ / piece for cost per piece.
  • At this operating point the engine returns 9.75 $ / hr for hourly cost.

How this compares with the baseline

  • Against the tool's baseline example, where connected dust collector fan load sits at 30 kW and the headline result is 7,800 $, this scenario comes in 150% above the baseline at 19,500 $.
  • It computes the total electricity cost of running a dust collection fan over a defined period and divides that cost across the collectors or lines the fan serves. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Fan energy cost: 19,500 $ (headline result)
  • Energy used: 150,000 kWh
  • Cost per piece: 19,500 $ / piece
  • Hourly cost: 9.75 $ / hr

Run it with your numbers

  • Every input above is editable in the live Fan Horsepower calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.