Rectangular 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.

Rectangular to round duct transition calculator.

Transition elbow offset box wedge. With some careful planning this is something you can do yourself. Square to round calculator. Step 2 enter in the value for the diameter of the round.

Round use a slightly smaller diameter for less crimping or to finish. This opened the door for the use of sheet metal for ducting. The table below can be used to compare equivalent diameters for rectangular and round circular ducts. 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.

Friction loss calculator for sheet metal ducts. Other hart cooley mobile tools. I want to calculate. Equivalent duct calculator round vs rectangular.

The rectangular dimensions and the air flow volume are adapted to the equal friction loss. Remember to add if bending the lower scrape in or out upper diameter. The table is based on the ducts friction loss formula. Converting a rectangle to round sheet metal duct work is something that is common in hvac.

Step 5 select a size of square duct that has the same area.