It is particularly handy to provide the area in square feet of round duct as well.
Square duct to round duct calculator.
New duct sizing chart xls.
This calculator can be used to calculate the area in square feet when the height inches and width inches of rectangular duct is known.
Duct areas in square feet can be calculated by using geometry rules for round areas.
This is a handy tool when deciding what size duct you want to use for your application.
Remember to add if bending the lower scrape in or out upper diameter.
Read round duct diameter inches and friction loss per 100 of duct inches of water.
I want to calculate.
Square to round calculator.
Add for left seam.
Friction loss calculator for flexible ducts.
Convert round duct size to rectangular duct size for equivelant airflow.
The area will cover a two dimensional slice of the duct.
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.
Rectangular to round conversion.
Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart rectangular sheet metal duct 07 on most metal duct calculators.
Friction loss calculator for sheet metal ducts.
To then convert that to volume you multiply the resulting area by the length.
The table below can be used to compare equivalent diameters for rectangular and round circular ducts.
Other hart cooley mobile tools.
The rectangular dimensions and the air flow volume are adapted to the equal friction loss.
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.
Flexible duct round metal pipe 750 1200 14 16 design airflow 50 85 125 1500 2000 180 240 325 525.
Step 5 select a size of square duct that has the same area.
Corona ca 92882 office phone.
Wide x deep lower scrape.
Enter duct airflow cfm duct velocity fpm duct length and the number of bends.
Round use a slightly smaller diameter for less crimping or to finish the top with an added round collar lower.
Add for right seam.
Sheet metal duct friction loss calculator.
Equivalent duct calculator round vs rectangular.
951 271 3950 toll free.
