Share of open-tower makeup water that leaves as vapor (evaporated share)
~80–90% (≈83% at 6 cycles)derived
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | Evaporated share of tower makeup = (C−1)/C with negligible drift: 67% at 3 cycles, 83% at 6, 90% at 10. The site-level share also depends on non-tower uses. |
| As of | 2026 |
| Source | US DOE FEMP, Best Management Practice 10: Cooling Tower Management · Make-Up = Evaporation + Blowdown + Drift; cycles of concentration ≈ make-up/blowdown |
| Review | checking…review by 2028-01-01 · standard cadence |
| Recorded changes | last 2026-10-16 · 2 revisions tracked |
| Claim id | share-of-withdrawn-water-that-is-consumed-lost |
Where the guide uses it
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