EnFluidPro SEF Analyzer
System effect per AMCA 201 / AMCA 203 and duct losses per SMACNA, for VDF axial fan installations
Duty and air
Fan
Fan curve
| Airflow | Ps |
|---|
EnFluidPro selection PDF
Attach the software output for the F400 vane axial fan. The file is read in this browser and is not uploaded.Orange line = curve that will be applied
Installed system
Drag items in from the library, or use In and Out. Drag cards to reorder. Select a card to set its size.Fan only. Add the inlet and outlet accessories used on this project from the library: drag them onto the inlet or outlet side, or use the In and Out buttons. Results update as you build.
intakeairflow →discharge
Fan and system curves
Pressure breakdown at design airflow
Site measurement check (AMCA 203)
Enter the traverse airflow and the fan static pressure from the site test. The check corrects to catalogue speed with the fan laws, then adds the calculated SEF as AMCA 203 §5 requires before comparing with the catalogue curve.
Data library and sources
System effect curve coefficients (AMCA 201 Table 7.1): SEF = C × ρV²/2
Checked against the AMCA 203 Annex A worked examples (curve U at 3252 fpm gives 0.26 in. wg; curve R at 2746 fpm gives 0.55 in. wg). Half curves such as R-S use the mean coefficient. Edits apply immediately.
Project file
Copy the project to keep it or send it to a colleague. Paste a copied project and load it to continue. Your last session is also kept in this browser.