This can be found by multiplying the two adjacent sides of the rectangular duct.
Rectangular to round duct calculator.
The equivalent diameter of a 300 mm x 500 mm rectangular duct can be calculated as.
Include fittings in the duct tel enter either.
D e 1 30 300 mm 500 mm 0 625 300 mm 500 mm 0 25 420 mm.
Read round duct diameter inches and friction loss per 100 of duct inches of water.
Rectangular to equivalent circular duct calculator.
This is a handy tool when deciding what size duct you want to use for your application.
Multiply the square of the radius by 3 14 to get the area of the duct in square inches.
Friction loss calculator for sheet metal ducts.
Friction loss calculator for flexible ducts.
Convert rectangular duct to round equivalent.
Indicates required field rectangular width.
The table is based on the ducts friction loss formula.
Enter duct airflow cfm duct velocity fpm duct length and the number of bends.
The rectangular dimensions and the air flow volume are adapted to the equal friction loss.
Step 5 divide the area from step 4 by 144 to get the area in square feet.
Convert round duct size to rectangular duct size for equivelant airflow.
Convert diameter to rectangular equivalent.
Other hart cooley mobile tools.
Equivalent duct calculator round vs rectangular.
This online air duct calculator is used to calculate the velocity of air flow feet per minute fpm and feet per second fps through any shaped circle square or rectangle ductulator with either diameter sides or area.
Step 5 select a size of square duct that has the same area.
Multiply this number by 3 14 pi to get the area of the round duct in square inches for example 16 x 3 14 50 24 square inches.
The equivalent diameter is the diameter of a circular duct or pipe that gives the same pressure loss as an equivalent rectangular duct or pipe.
In this example the area is 314 square inches.
Converts a rectangular size to the appropriate round size or the available esm flat oval size.
The calculator below is based on formula 1.
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.
