Rectangular To Round Duct Calculator

Friction loss calculator for flexible ducts.

Rectangular to round duct calculator. I want to calculate. Friction loss calculator for sheet metal ducts. Convert diameter to rectangular equivalent. The calculator below is based on formula 1.

The table below can be used to compare equivalent diameters for rectangular and round circular ducts. Convert rectangular duct to round equivalent. 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. Include fittings in the duct tel enter either.

The formula is generic and any unit can be used. Convert round duct size to rectangular duct size for equivelant airflow. D e 1 30 300 mm 500 mm 0 625 300 mm 500 mm 0 25 420 mm. The equivalent diameter of a 300 mm x 500 mm rectangular duct can be calculated as.

Indicates required field rectangular width. Step 5 divide the area from step 4 by 144 to get the area in square feet. Enter duct airflow cfm duct velocity fpm duct length and the number of bends. Equivalent duct calculator round vs rectangular.

Multiply the square of the radius by 3 14 to get the area of the duct in square inches. Converts a rectangular size to the appropriate round size or the available esm flat oval size. In this example the area is 314 square inches. Rectangular to equivalent circular duct calculator.

This can be found by multiplying the two adjacent sides of the rectangular duct. Step 5 select a size of square duct that has the same area. The rectangular dimensions and the air flow volume are adapted to the equal friction loss. This online air duct calculator is used to calculate the velocity of air flow feet per minute fpm and feet per second fps through any shaped circle square or rectangle ductulator with either diameter sides or area.

Air duct also termed as ductulator is a passage that is used to provide fresh air into rooms buildings etc air ducts may be in circular square and in rectangular shapes. Other hart cooley mobile tools. This is a handy tool when deciding what size duct you want to use for your application. 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.