Heat Treatment, Furnaces & Thermal Processing worked example

Atmosphere Gas Usage with atmosphere gas flow of 630 scfh: a worked example

Push atmosphere gas flow up to 630 scfh and the picture changes. This example computes every intermediate figure at that operating point. Use it when atmosphere cost or gas supply capacity matters for annealing, brazing, carburizing, nitriding, sintering, or vacuum furnace backfill.

The inputs for this scenario

  • Atmosphere gas flow: 630 scfh (raised for this scenario; the documented default is 250)
  • Gas flow runtime: 10 hr (unchanged)
  • Delivered gas cost: 0.02 $ / scf (unchanged)

Working through the calculation

  • Applying the documented formula (Atmosphere gas consumed = atmosphere gas flow × gas flow runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 113 $ for atmosphere gas run cost, the number this scenario is built around.
  • At this operating point the engine returns 6,300 scfh for atmosphere gas consumed.
  • At this operating point the engine returns 10 hr for gas flow runtime.
  • At this operating point the engine returns 0.02 $ / scf for delivered gas cost.

How this compares with the baseline

  • Against the tool's baseline example, where atmosphere gas flow sits at 250 scfh and the headline result is 45 $, this scenario comes in 152% above the baseline at 113 $.
  • It computes the total atmosphere gas cost of a run by multiplying flow rate by runtime to get standard cubic feet consumed, then by the delivered gas cost. 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

  • Atmosphere gas run cost: 113 $ (headline result)
  • Atmosphere gas consumed: 6,300 scfh
  • Gas flow runtime: 10 hr
  • Delivered gas cost: 0.02 $ / scf

Run it with your numbers

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

Last reviewed 2026-05-12.