Industrial Filtration, Separation & Dust Collection worked example

Pressure Drop Energy Cost at 72% share of runtime at the elevated drop: a worked example

This worked example runs the pressure drop energy cost numbers for a tougher week than the baseline: 72% share of runtime at the elevated drop instead of the typical 100%. Estimate operating cost tied to filter pressure drop from runtime, cost per pressure-drop hour, operating share, and fixed energy charges.

The inputs for this scenario

  • Annual runtime at elevated pressure drop: 2,000 hr (held at the documented default)
  • Incremental fan energy cost per pressure-drop hour: 14 $ / hr (held at the documented default)
  • Share of runtime at the elevated drop: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed demand charge or test cost: 800 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable pressure drop energy cost = runtime at elevated pressure drop × energy cost per pressure-drop hour × included operating share.
  • Total pressure drop energy cost works out to 20,960 $ at these inputs, and this is the headline figure for the scenario.
  • Energy cost per pressure-drop hour works out to 10.48 $ / hr at these inputs.
  • Variable pressure drop energy cost works out to 20,160 $ at these inputs.
  • Fixed demand or test cost works out to 800 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where share of runtime at the elevated drop sits at 100% and the headline result is 28,800 $, this scenario comes in 27.22% below the baseline at 20,960 $.
  • Use it when building a payback case for new media or a cleaning upgrade, or when tracking how rising pressure drop is inflating energy spend over a bag's life. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total pressure drop energy cost: 20,960 $ (headline result)
  • Energy cost per pressure-drop hour: 10.48 $ / hr
  • Variable pressure drop energy cost: 20,160 $
  • Fixed demand or test cost: 800 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Pressure Drop Energy Cost calculator, set share of runtime at the elevated drop to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.