The ductulator duct sizing calculator is a hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method.
Ductulator hvac duct sizing calculator 1998.
Rectangular duct is rounded up to the nearest 1 4 inch.
This free ductulator calculates the exact duct size round and rectangular for the given friction rate duct type and amount of airflow.
Enter duct airflow cfm duct velocity fpm duct length and the number of bends.
In wg duct tel.
Read round duct diameter inches and friction loss per 100 of duct inches of water.
It will automatically adjust the size to keep from exceeding the maximum manual d velocities for residential duct systems.
Friction rate velocity friction rate.
Metal ductboard flex size by.
Convert rectangular duct to round equivalent.
This ductulator uses the colebrook equation to calculate the smallest duct size acceptable for the selected friction rate and duct type that stays within the selected acca manual d recommended velocities.
Air duct also termed as ductulator is a passage that is used to provide fresh air into rooms buildings etc air ducts may be in circular square and in rectangular shapes.
Sheet metal duct friction loss calculator.
Includes scales for friction loss per unit length air volume air velocity round duct diameter and rectangular duct diameters.