Industrial Laundry, Uniform & Textile Rental Operations worked example

Tunnel Washer Output at 99% tunnel operating efficiency factor: a worked example

This scenario runs the tunnel washer output calculation on the strong side: 99% tunnel operating efficiency factor, with every other input held at its documented default. Built for washroom supervisors and plant engineers checking continuous batch washer output against press, dryer, and finishing demand.

The inputs for this scenario

  • Pounds processed through the tunnel: 68,000 lb (unchanged)
  • Tunnel washer runtime: 8 hr (unchanged)
  • Tunnel operating efficiency factor: 99 % (raised for this scenario; the documented default is 90)

Working through the calculation

  • Applying the documented formula (Raw tunnel washer output = tunnel washer processed weight รท tunnel washer runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 8,415 lb / hr for effective tunnel washer output, the number this scenario is built around.
  • At this operating point the engine returns 8,500 lb / hr for raw tunnel washer output.
  • At this operating point the engine returns 99 % for tunnel operating efficiency.
  • At this operating point the engine returns 8 hr for tunnel washer runtime.

How this compares with the baseline

  • Against the tool's baseline example, where tunnel operating efficiency factor sits at 90% and the headline result is 7,650 lb / hr, this scenario comes in 10% above the baseline at 8,415 lb / hr.
  • Use it to size tunnel capacity, set shift targets, and check actual performance against the manufacturer's rating. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Effective tunnel washer output: 8,415 lb / hr (headline result)
  • Raw tunnel washer output: 8,500 lb / hr
  • Tunnel operating efficiency: 99 %
  • Tunnel washer runtime: 8 hr

Run it with your numbers

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

Last reviewed 2026-05-12.