Convert Round Duct To Rectangular Calculator

Duct areas in square feet can be calculated by using geometry rules for round areas. Equivalent round duct diameter for rectangular opening equivalent diameter. Read round duct diameter inches and friction loss per 100 of duct inches of water.

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This is a handy tool when deciding what size duct you want to use for your application.

Convert round duct to rectangular calculator.

Diameter of a round duct that equates to the same pressure loss as the corresponding rectangular duct. Enter the length inches and width inches of the rectangular duct. I want to calculate. Enter duct airflow cfm duct velocity fpm duct length and the number of bends.

Convert round duct size to rectangular duct size for equivelant airflow. 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. Step 5 select a size of square duct that has the same area. The table below can be used to compare equivalent diameters for rectangular and round circular ducts.

Friction loss calculator for sheet metal ducts. Convert diameter to rectangular equivalent. Other hart cooley mobile tools. Convert rectangular duct to round equivalent.

D e is the circular equivalent of rectangular duct for equal length fluid resistance and airflow inch a is the length of one side of duct inch b is the length adjacent side of duct inch. The rectangular dimensions and the air flow volume are adapted to the equal friction loss. 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. Friction loss calculator for flexible ducts.

Sheet metal duct friction loss calculator. Convert rectangular and oval duct geometry to a equivalent circular diameter online calculator with imperial and si units sponsored links the equivalent diameter is the diameter of a circular duct or pipe that for equal flow gives the same pressure loss or resistance as an equivalent rectangular duct or pipe. Equivalent duct calculator round vs rectangular. The table is based on the ducts friction loss formula.

This can be found by multiplying the two adjacent sides of the rectangular duct. Include fittings in the duct tel enter either. To then convert that to volume you multiply the resulting area by the length. The area will cover a two dimensional slice of the duct.

Equivalent duct calculator app user guide appendix equivalent round for rectangular 𝐷𝑒 1 30 0 625 0 250 where. Read computed values for equivalent round duct diameter inches.