Hvac Rectangular Duct Sizes

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.

Hvac rectangular duct sizes. In ductwork the law of conservation of mass means a duct size can be recalculated for a new air velocity using the simple equation. The duct size must adequately handle air flow intake and return in order for an hvac system to operate at optimal levels. Duct work is otherwise called as duct system. Rectangular duct and fittings are one part of our complete line of hvac products.

V 2 v 1 a 1 a 2. Rectangular duct si units circular duct si units rectangular duct us units circular duct us units. Select the duct material from the. 2 1 4 x 10 x 24 30ga 2 1 4 x 12 x 24 30ga 3 1 4 x 10 x 12 30ga.

Smc tdc slip drive and raw sheet metal connectors inc. The length of the rectangular duct size would range from 0 7mm to 0 9mm galvanised mild steel depending on size. Used between wall studs for venting heating air conditioning supply return duct. The professional team at hvac for life inc.

Smc manufactures coil line ductwork in 4 5 6 lengths. All ductwork comes standard with stiffening beads. The table is based on the ducts friction loss formula. The table below can be used to compare equivalent diameters for rectangular and round circular ducts.

Beaded duct is manufactured using. Enter an internal duct size this must be limited to a maximum aspect ratio of 5 1 for the results to be valid the resulting vel ocity and pressure drop per unit length are displayed in the blue box. Equivalent diameter rectangular and circular hvac ducts equivalent diameter for rectangular and circular ducts air flows between 100 50000 cfm maximum size of duct or pipe through steel joists k series joists and maximum size of ducts and pipes. Ducts are the conduits or passages used in heating ventilation and air conditioning hvac for delivering and removing air.

Most cases the air in a duct is assumed to be incompressible an assumption that overlooks the change of air density that occurs as a result of pressure loss and flow in the ductwork. For this reason homeowners may want to contact a certified hvac technician or contractor to determine the optimal size of ductwork throughout the home or business environment that also measures up to code standards.