Distillation Tray Efficiency: murphree_efficiency
Distillation tray efficiency data: O'Connell overall column efficiency vs alpha*mu (14 data points, formula Eo=50.3*(alpha*mu)^-0.226), Murphree tray efficiency ranges by tray type and system, weep-point velocities, Fair flooding C-factors (Csb) at multiple tray spacings, downcomer backup limits, tray pressure drop components, turndown ratios, and tray spacing recommendations
| parameter type | record id | notes | tray type | unit | value max | value min | value typical |
|---|---|---|---|---|---|---|---|
| murphree_efficiency | bubble_cap_typical | Murphree vapor tray efficiency for bubble-cap trays; highest efficiency but highest pressure drop and cost; most O'Connell original data from bubble-cap columns | bubble_cap | pct | 90 | 65 | 80 |
| murphree_efficiency | dual_flow_typical | Murphree efficiency for dual-flow (perforated) trays; no downcomers; lower efficiency but handles fouling/solids; used in FCC main fractionators | dual_flow | pct | 70 | 40 | 55 |
| murphree_efficiency | ethanol_water | Sieve tray efficiency for ethanol-water system; alpha*mu ~0.5-1.0; mu~0.5-1.5 cP; alpha~2-3 | sieve | pct | 75 | 55 | 65 |
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