The table below can be used to compare equivalent diameters for rectangular and round circular ducts.
Square to round duct transition calculator.
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.
Rectangle square to round transition.
For example our original 8 inch round duct should be mated to the 10 inch by 5 inch rectangular duct.
The table is based on the ducts friction loss formula.
I want to calculate.
The rectangular dimensions and the air flow volume are adapted to the equal friction loss.
Friction loss calculator for sheet metal ducts.
Round use a slightly smaller diameter for less crimping or to finish.
Other hart cooley mobile tools.
Converting a rectangle to round sheet metal duct work is something that is common in hvac.
Square to round calculator.
Equivalent duct calculator round vs rectangular.
951 271 3950 toll free.
Remember to add if bending the lower scrape in or out upper diameter.
Transition elbow offset box wedge.
With some careful planning this is something you can do yourself.
Friction loss calculator for flexible ducts.
Corona ca 92882 office phone.
This opened the door for the use of sheet metal for ducting.