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.

Include fittings in the duct tel enter either. The rectangular dimensions and the air flow volume are adapted to the equal friction loss. This can be found by multiplying the two adjacent sides of the rectangular duct. Convert diameter to rectangular equivalent.

The length of the rectangular duct size would range from 0 7mm to 0 9mm galvanised mild steel depending on size. Equivalent duct calculator round vs rectangular. The table below can be used to compare equivalent diameters for rectangular and round circular ducts. Friction loss calculator for flexible ducts.

Duct work is otherwise called as duct system. Convert rectangular duct to round equivalent. 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. Use the calculator to add these two measurements together and multiply by two.

2001 ashrae fundamentals p. If it cannot be converted to round because of restrictions it should be converted to an equivalent flat oval size. The table is based on the ducts friction loss formula. When a designer sees rectangular duct on a drawing they should convert it to an equivalent round size if possible.

Other hart cooley mobile tools. This is a handy tool when deciding what size duct you want to use for your application. 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. 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. I want to calculate. Use a measuring tape that measures in inches. In wg duct tel.

Approaches the efficiency of round duct. This tells you the length of the perimeter of the 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. Friction rate velocity friction rate.

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