Industrial Laundry, Uniform & Textile Rental Operations worked example

Tunnel Washer Output at 65% tunnel operating efficiency factor: a worked example

Suppose tunnel operating efficiency factor falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate effective tunnel washer output from processed pounds, tunnel runtime, and real operating efficiency.

The inputs for this scenario

  • Pounds processed through the tunnel: 68,000 lb (held at the documented default)
  • Tunnel washer runtime: 8 hr (held at the documented default)
  • Tunnel operating efficiency factor: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw tunnel washer output = tunnel washer processed weight รท tunnel washer runtime.
  • Effective tunnel washer output works out to 5,525 lb / hr at these inputs, and this is the headline figure for the scenario.
  • Raw tunnel washer output works out to 8,500 lb / hr at these inputs.
  • Tunnel operating efficiency works out to 65 % at these inputs.
  • Tunnel washer runtime works out to 8 hr at these inputs.

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 27.78% below the baseline at 5,525 lb / hr.
  • It divides processed weight by runtime for raw output, then multiplies by an efficiency factor to give realistic effective pounds per 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

  • Effective tunnel washer output: 5,525 lb / hr (headline result)
  • Raw tunnel washer output: 8,500 lb / hr
  • Tunnel operating efficiency: 65 %
  • Tunnel washer runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Tunnel Washer Output calculator, set tunnel operating efficiency factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.