Total length multiplied by the friction rate (usually from a Duct Fitting Database).
When using an ESP calculation Excel sheet, ensure that you:
If using flex duct, the pressure drop is standard sheet metal * multiplied by a compression factor*.
Total length multiplied by the friction rate (usually from a Duct Fitting Database).
When using an ESP calculation Excel sheet, ensure that you: esp calculation hvac excel sheet
If using flex duct, the pressure drop is standard sheet metal * multiplied by a compression factor*. Total length multiplied by the friction rate (usually