Flat Oval Duct Sizing Calculator

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Flat oval duct sizing calculator.

Gauge surface area perimeter in cross sectional area in2 spiral pipe of texas currently has the capability of producing flat oval spiral lockseam duct in 576 sizes more than anyone else in the us. Longer lengths are available on special order. Flat oval mm width x mm height rectangular mm width x mm height velocity m s typical 2 to 10 m s. Area and perimeter of a ellipse shape calculator calculate area and perimeter of an ellipse shape.

Equivalent round duct diameter for flat oval opening. The equivalent diameter of a oval duct or tube ellipse can be calculated as heyt diaz de 1 55 a0 625 p0 25 2. It is important to use the length a the long measurement in the box with the length a label. Read computed values for equivalent round duct diameter inches.

Ductwork comes in round rectangular and flat oval shape. Single wall flat oval duct and fittings are also available in carbon steel paintable galvanized steel and aluminized steel. Duct sizing duct calculation duct design energy efficient ductwork design. Fittings for flat oval ducts are difficult to fabricate or modify in the field.

Full worked example included with cfd simulations to optimise your design to ensure the highest energy efficiency. Guide for how to design a ductwork system. Converts a rectangular size to the appropriate round size or the available esm flat oval size. Flat oval spiral pipe engineering tables flat oval size basic actual size round equivalent round std.

Diameter of a round duct that equates to the same pressure loss as the corresponding flat oval duct. Flat oval ducts have smaller height requirements than round ducts and retain most of the advantages of the round ducts. Some standard lengths of uni seal flat oval duct are only available in 6 foot lengths. Flat oval rectangular de 1 3 x a x b 0 625 a b 0 250 rectangular to round de 1 55 x a 0 625 p 0 250 flat oval to round cfm each rectangular round pf iwg flat oval refer to above equal velocity rounded up to next largest even size rounded up to next whole number velocity fpm delta diameter gauge.

Enter the long axis inches and short axis inches of the flat oval duct.