Industrial Gases & Cryogenic Systems worked example

Cryogenic Boil-Off Loss at 1.73% target boil-off loss rate: a worked example

This scenario runs the cryogenic boil-off loss calculation on the strong side: 1.73% target boil-off loss rate, with every other input held at its documented default. Use it when reviewing liquid nitrogen, liquid oxygen, liquid argon, CO2, LNG, dewar, microbulk, or bulk tank holding losses.

The inputs for this scenario

  • Cryogenic liquid lost to boil-off: 85 gal (unchanged)
  • Starting cryogenic liquid inventory: 5,000 gal (unchanged)
  • Target boil-off loss rate: 1.73 % (raised for this scenario; the documented default is 1.5)

Working through the calculation

  • Applying the documented formula (Cryogenic boil-off loss rate = cryogenic liquid lost to boil-off ÷ starting cryogenic liquid inventory × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 1.7 % for cryogenic boil-off loss rate, the number this scenario is built around.
  • At this operating point the engine returns 0.03 percentage points for cryogenic boil-off loss gap to target.
  • At this operating point the engine returns 85 count for cryogenic liquid lost to boil-off.
  • At this operating point the engine returns 5,000 count for starting cryogenic liquid inventory.

How this compares with the baseline

  • Against the tool's baseline example, where target boil-off loss rate sits at 1.5% and the headline result is 1.7 %, this scenario lands almost exactly on the baseline at 1.7 %.
  • Use it when reviewing tank performance over a holding period, flagging insulation or relief-valve problems, or benchmarking actual evaporation against the manufacturer's normal evaporation rate. 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

  • Cryogenic boil-off loss rate: 1.7 % (headline result)
  • Cryogenic boil-off loss gap to target: 0.03 percentage points
  • Cryogenic liquid lost to boil-off: 85 count
  • Starting cryogenic liquid inventory: 5,000 count

Run it with your numbers

  • Every input above is editable in the live Cryogenic Boil-Off Loss calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.