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Convert rectangular and oval duct geometry to a equivalent circular diameter - online calculator with imperial and SI-units. 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.
- Smaller Rectangles Within a Larger Rectangle
Fluid Flow - Equivalent Diameter Convert rectangular and...
- Equivalent Length Method
3. Add Volume flow, Pipe Size and Pressure Loss for each...
- Fuel Oil Storage Tanks
Fluid Flow - Equivalent Diameter Convert rectangular and...
- Rectangular Ducts
Equivalent Diameter - Rectangular vs. Circular HVAC Ducts...
- Equivalent Diameter
The equivalent diameter is the diameter of a circular duct...
- Air Ducts
d e = equivalent duct diameter (inches) q = air volume flow...
- Smaller Rectangles Within a Larger Rectangle
The hydraulic diameter is used the Darcy-Weisbach equation to calculate pressure loss in ducts or pipes. Note! - the hydraulic diameter is not the same as the geometrical equivalent diameter of non-circular ducts or pipes. Hydraulic diameter can be calculated with the generic equation.
To use this online calculator for Diameter of Equivalent Pipe, enter Discharge through Pipe (Q), Coefficient of Friction of Pipe (μ), Length of Pipe (L) & Loss of Head in Equivalent Pipe (Hloss) and hit the calculate button.
Calculation of pipe diameter with the pipe diameter calculator is easy. You can use pipe diameter and flow rate calculator for quick pipe diameter calculation in a closed, round, rectangle (online calculator version only) and filled pipes with liquid or perfect gas.
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. The table below can be used to compare equivalent diameters for rectangular and round circular ducts. The table is based on the ducts friction loss formula.
In turbulent flow we can use either the Colebrook or the Zigrang-Sylvester Equation, depending on the problem. Both give equivalent results within experimental uncertainty. In these well equations, ε is the average roughness of the interior surface of the pipe. A table of roughness
The formula for calculating pipe diameter when volume flow rate and velocity are known is derived from the principle of conservation of mass, specifically for the steady flow of an incompressible fluid: D = √ [ (4 × Q) / (π × V)] Where: D: The diameter of the pipe. Q: The volume flow rate of the fluid. V: The velocity of the fluid.
