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