Equivalent Diameter of Non-Circular Duct Calculator

✖Cross Sectional Area of Flow is the area of the sliced portion of a 3D object(pipe). When a pipe is sliced ,the cross sectional area will be calculated for the top part, which is a circle.ⓘ Cross Sectional Area of Flow [A_cs]			+10% -10%
✖Wetted Perimeter is defined as the surface of the channel bottom and sides in direct contact with the aqueous body.ⓘ Wetted Perimeter [P]			+10% -10%

✖Equivalent Diameter of an irregularly shaped object is the diameter of a sphere of equivalent volume.ⓘ Equivalent Diameter of Non-Circular Duct [D_e]

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Formula

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Equivalent Diameter of Non-Circular Duct

Formula

`"D"_{"e"} = (4*"A"_{"cs"})/"P"`

Example

`"1.25m"=(4*"25m²")/"80m"`

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Equivalent Diameter of Non-Circular Duct Solution

STEP 0: Pre-Calculation Summary

Formula Used

Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter
D_e = (4*A_cs)/P
This formula uses 3 Variables

Variables Used

Equivalent Diameter - (Measured in Meter) - Equivalent Diameter of an irregularly shaped object is the diameter of a sphere of equivalent volume.
Cross Sectional Area of Flow - (Measured in Square Meter) - Cross Sectional Area of Flow is the area of the sliced portion of a 3D object(pipe). When a pipe is sliced ,the cross sectional area will be calculated for the top part, which is a circle.
Wetted Perimeter - (Measured in Meter) - Wetted Perimeter is defined as the surface of the channel bottom and sides in direct contact with the aqueous body.

STEP 1: Convert Input(s) to Base Unit

Cross Sectional Area of Flow: 25 Square Meter --> 25 Square Meter No Conversion Required
Wetted Perimeter: 80 Meter --> 80 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D_e = (4*A_cs)/P --> (4*25)/80

Evaluating ... ...

D_e = 1.25

STEP 3: Convert Result to Output's Unit

1.25 Meter --> No Conversion Required

FINAL ANSWER

1.25 Meter <-- Equivalent Diameter

(Calculation completed in 00.004 seconds)

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University School of Chemical Technology-USCT (GGSIPU), New Delhi

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< 17 Basics of Heat Transfer Calculators

Log Mean Temperature Difference for Counter Current Flow

Go Log Mean Temperature Difference = ((Outlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)-(Inlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid))/ln((Outlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)/(Inlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid))

Log Mean Temperature Difference for CoCurrent Flow

Go Log Mean Temperature Difference = ((Outlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid)-(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid))/ln((Outlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid)/(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid))

Logarithmic Mean Area of Cylinder

Go Logarithmic Mean Area = (Outer Area of Cylinder-Inner Area of Cylinder)/ln(Outer Area of Cylinder/Inner Area of Cylinder)

Equivalent Diameter when Flow in Rectangular Duct

Go Equivalent Diameter = (4*Length of Rectangular Section*Breadth of Rectangle)/(2*(Length of Rectangular Section+Breadth of Rectangle))

Internal Diameter of Pipe given Heat Transfer Coefficient for Gas in Turbulent Motion

Go Internal Diameter of Pipe = ((16.6*Specific Heat Capacity*(Mass Velocity)^0.8)/(Heat Transfer Coefficient for Gas))^(1/0.2)

Heat Transfer from Stream of Gas flowing in Turbulent Motion

Go Heat Transfer Coefficient = (16.6*Specific Heat Capacity*(Mass Velocity)^0.8)/(Internal Diameter of Pipe^0.2)

Colburn Factor using Chilton Colburn Analogy

Go Colburn's j-factor = Nusselt Number/((Reynolds Number)*(Prandtl Number)^(1/3))

Heat Transfer Coefficient based on Temperature Difference

Go Heat Transfer Coefficient = Heat Transfer/Overall Temperature Difference

Equivalent Diameter of Non-Circular Duct

Go Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter

Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film

Go Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance)

Local Heat Transfer Resistance of Air-Film

Go Local Heat Transfer Resistance = 1/(Heat Transfer Coefficient*Area)

Wetted Perimeter given Hydraulic Radius

Go Wetted Perimeter = Cross Sectional Area of Flow/Hydraulic Radius

Hydraulic Radius

Go Hydraulic Radius = Cross Sectional Area of Flow/Wetted Perimeter

Reynolds Number given Colburn Factor

Go Reynolds Number = (Colburn's j-factor/0.023)^((-1)/0.2)

J-Factor for Pipe Flow

Go Colburn's j-factor = 0.023*(Reynolds Number)^(-0.2)

Colburn J-Factor given Fanning Friction Factor

Go Colburn's j-factor = Fanning Friction Factor/2

Fanning Friction Factor given Colburn J-Factor

Go Fanning Friction Factor = 2*Colburn's j-factor

Equivalent Diameter of Non-Circular Duct Formula

Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter
D_e = (4*A_cs)/P

What is Heat Transfer?

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes.

Define Thermal Conductivity & Factors affecting it?

Thermal conductivity is defined as the ability of a substance to conduct heat. Factors Affecting The Thermal Conductivity are: Moisture, Density of material, Pressure, Temperature & Structure of material.

How to Calculate Equivalent Diameter of Non-Circular Duct?

Equivalent Diameter of Non-Circular Duct calculator uses Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter to calculate the Equivalent Diameter, The Equivalent Diameter of Non-Circular Duct formula is defined as a commonly used term when handling flow in non-circular tubes and channels. The hydraulic diameter transforms non-circular ducts into pipes of equivalent diameter. Equivalent Diameter is denoted by D_e symbol.

How to calculate Equivalent Diameter of Non-Circular Duct using this online calculator? To use this online calculator for Equivalent Diameter of Non-Circular Duct, enter Cross Sectional Area of Flow (A_cs) & Wetted Perimeter (P) and hit the calculate button. Here is how the Equivalent Diameter of Non-Circular Duct calculation can be explained with given input values -> 1.25 = (4*25)/80.

FAQ

What is Equivalent Diameter of Non-Circular Duct?

The Equivalent Diameter of Non-Circular Duct formula is defined as a commonly used term when handling flow in non-circular tubes and channels. The hydraulic diameter transforms non-circular ducts into pipes of equivalent diameter and is represented as D_e = (4*A_cs)/P or Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter. Cross Sectional Area of Flow is the area of the sliced portion of a 3D object(pipe). When a pipe is sliced ,the cross sectional area will be calculated for the top part, which is a circle & Wetted Perimeter is defined as the surface of the channel bottom and sides in direct contact with the aqueous body.

How to calculate Equivalent Diameter of Non-Circular Duct?

The Equivalent Diameter of Non-Circular Duct formula is defined as a commonly used term when handling flow in non-circular tubes and channels. The hydraulic diameter transforms non-circular ducts into pipes of equivalent diameter is calculated using Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter. To calculate Equivalent Diameter of Non-Circular Duct, you need Cross Sectional Area of Flow (A_cs) & Wetted Perimeter (P). With our tool, you need to enter the respective value for Cross Sectional Area of Flow & Wetted Perimeter and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Equivalent Diameter?

In this formula, Equivalent Diameter uses Cross Sectional Area of Flow & Wetted Perimeter. We can use 1 other way(s) to calculate the same, which is/are as follows -

Equivalent Diameter = (4*Length of Rectangular Section*Breadth of Rectangle)/(2*(Length of Rectangular Section+Breadth of Rectangle))

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