Convert Round Duct Size To Rectangular

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.

Convert round duct size to rectangular.

The table below can be used to compare equivalent diameters for rectangular and round circular ducts. Use a measuring tape that measures in inches. Use the calculator to add these two measurements together and multiply by two. Other hart cooley mobile tools.

In wg duct tel. 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. 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. Measure one side of the duct from top to bottom then measure the bottom of the duct from left to right if the duct is square or rectangular.

Gustafson g 0 single wall round rectangular to round conversion de 1 30 ab 0 625 a b 0 250 a length of one side of rectangular duct inch b length of adjacent side of rectangular duct inch de circular equivalent of rectangular duct for equal friction and capacity inch source. When a designer sees rectangular duct on a drawing they should convert it to an equivalent round size if possible. Step 5 select a size of square duct that has the same area. This is a handy tool when deciding what size duct you want to use for your application.

Include fittings in the duct tel enter either. Equivalent duct calculator round vs rectangular. An aspect ratio of 1 is round duct. Convert diameter to rectangular equivalent.

This tells you the length of the perimeter of the duct. Friction loss calculator for flexible ducts. Friction loss calculator for sheet metal ducts. I want to calculate.

The rectangular dimensions and the air flow volume are adapted to the equal friction loss. 2001 ashrae fundamentals p. The table is based on the ducts friction loss formula. Convert round duct size to rectangular duct size for equivelant airflow.

Convert rectangular duct to round equivalent. Friction rate velocity friction rate. If it cannot be converted to round because of restrictions it should be converted to an equivalent flat oval size. Approaches the efficiency of round duct.

Provided here is the rectangular duct sizes chart for your personal reference and this chart table shows the duct size cfm and their equivalent diameter in inches.