Formula To Convert Rectangular Duct To Round Duct

For rectangular ducts a width of duct side inches b height of other duct side inches equivalent round duct size for a rectangular duct equivalent round duct size for a rectangular duct can be expressed as deq 1 3 x a x b 0 625 a b 0 25 where deq equivalent diameter a one dimension of rectangular duct inches.

Formula to convert rectangular duct to round duct.

The formula is generic and any unit can be used. 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. If it cannot be converted to round because of restrictions it should be converted to an equivalent flat oval size.

Convert round duct size to rectangular duct size for equivelant airflow. The calculator below is based on formula 1. Approaches the efficiency of round duct. When a designer sees rectangular duct on a drawing they should convert it to an equivalent round size if possible.

This is a handy tool when deciding what size duct you want to use for your application. That will at least give the duct. How to calculate duct sheet area duct quantity rectangle duct square duct round duct flat oval duct amazon. Equivalent duct calculator round vs rectangular.

Https amzn to 39pgvjc 1 wireless refrigeration. 2001 ashrae fundamentals p. 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. Rectangular to equivalent circular duct calculator.

The equivalent diameter of a 300 mm x 500 mm rectangular duct can be calculated as. Other hart cooley mobile tools. An aspect ratio of 1 is round duct. D e 1 30 300 mm 500 mm 0 625 300 mm 500 mm 0 25 420 mm.