The computed parameter is shown directly in its provided resulting box (highlighted orange). Equivalent Diameter - Convert rectangular and oval duct geometry to a equivalent circular diameter - online calculator with imperial and SI-units; Equivalent Diameter - Rectangular and Circular HVAC Ducts - Equivalent diameter for rectangular and circular ducts - air flows between 100 - 50000 cfm Convert Round Duct Size to Rectangular Duct Size for equivelant airflow. Area = Surface area of duct in square feet. You'll need: Tape measurer or ruler Calculator … The app is available for Apple and Android systems. Simple calculator for calculating the area of a rectangular duct online Equivalent Diameter: Diameter of a round duct that equates to the same pressure loss as the corresponding flat oval duct. Duct Calculator’ is calculating the construction of round, rectangular and oval Ducts. 202-562-3828. 316 Ellingson Rd. is digital. It will also convert rectangular to flat oval. And it shows the velocity and/or static pressure loss of air for both types of duct shape. [1]  2020/10/08 05:12   Female / 50 years old level / An engineer / Very /, [2]  2020/10/02 02:57   Male / 50 years old level / An office worker / A public employee / Very /, [3]  2020/09/09 16:24   Male / 60 years old level or over / A retired person / Very /, [4]  2020/06/08 07:52   Male / 40 years old level / A teacher / A researcher / Very /, [5]  2020/05/28 03:36   Male / 60 years old level or over / Self-employed people / Very /, [6]  2020/04/05 02:53   Male / 40 years old level / An engineer / Useful /, [7]  2020/03/14 11:33   Male / 50 years old level / Others / Very /, [8]  2020/02/16 05:10   Male / 60 years old level or over / A retired person / Very /, [9]  2020/01/29 06:12   - / 50 years old level / Self-employed people / Very /, [10]  2020/01/08 05:33   Male / 40 years old level / Self-employed people / Very /. Calculator online for a the surface area of a capsule, cone, conical frustum, cube, cylinder, hemisphere, square pyramid, rectangular prism, triangular prism, sphere, or spherical cap. Oval Calculator. Related Volume Calculator | Area Calculator | Body Surface Area Calculator. Divide by 144 to determine how many square feet are in the duct area. when the quantity take off is completed, take 10% extra of duct this will resolve the quantity assumption . Resources. W = Width of duct in inches. Oval duct, or oval spiral duct, can be used in buildings with clearance issues that prevent the use of standard round spiral duct. Call us! Algona, WA 98001 ph: 253.939.7741 fx: 253.939.9936 e-mail: nwsales@accuduct.com COVID-19 information Eg: a 24 x12 OVE-90-5 is a “Hard Bend” or “Long Way” flat oval 90° elbow a 12 x 24 OVE-90-5 is an “Easy Bend” or “Short Way” flat oval 90° elbow When dimensions C x D, and/or E x F, and/or G x H are shown, the first dimension is the plan dimension. It can be visualized as the amount of paint that would be necessary to cover a surface, and is the two-dimensional counterpart of the one-dimensional length of a curve, and three-dimensional volume of a solid. The surface area and the insulation area is also calculated. Elbow ×90deg = ( (W-H)*2+3.142H/2+0.15)* (W-H)*2+3.142H. 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 ) • b = adjacent side of rectangular duct (inches) Equations for Flat Oval … The application calculates equivalent rectangular duct clear dimensions, it allows fixing of any rectangular dimension, and it is based on calculation … We don't save this data. DuctMate is an interactive duct pressure drop and size calculator. Affiliates. 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