Duct Fitting Loss Coefficients: exit_duct_with_diffuser
Loss coefficients (C-values) for duct fittings — elbows, tees, transitions, entries and exits per ASHRAE Fundamentals and SMACNA. dP = C * Vp where Vp is velocity pressure.
| fitting type | size or range | C0 (dimensionless) | description | geometry notes |
|---|---|---|---|---|
| exit_duct_with_diffuser | all | 0.2 | Duct exit with gradual diffuser reducing velocity prior to discharge | Velocity pressure partially recovered |
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