J-Factor for Pipe Flow Calculator

✖Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.ⓘ Reynolds Number [Re]

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✖Colburn's j-factor is a non-dimensional parameter that arises in convective heat transfer analysis.ⓘ J-Factor for Pipe Flow [j_H]

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Formula

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J-Factor for Pipe Flow

Formula

`"j"_{"H"} = 0.023*("Re")^(-0.2)`

Example

`"0.0046"=0.023*("3125")^(-0.2)`

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J-Factor for Pipe Flow Solution

STEP 0: Pre-Calculation Summary

Formula Used

Colburn's j-factor = 0.023*(Reynolds Number)^(-0.2)
j_H = 0.023*(Re)^(-0.2)
This formula uses 2 Variables

Variables Used

Colburn's j-factor - Colburn's j-factor is a non-dimensional parameter that arises in convective heat transfer analysis.
Reynolds Number - Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.

STEP 1: Convert Input(s) to Base Unit

Reynolds Number: 3125 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

j_H = 0.023*(Re)^(-0.2) --> 0.023*(3125)^(-0.2)

Evaluating ... ...

j_H = 0.0046

STEP 3: Convert Result to Output's Unit

0.0046 --> No Conversion Required

FINAL ANSWER

0.0046 <-- Colburn's j-factor

(Calculation completed in 00.020 seconds)

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Created by Ayush gupta

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

J-Factor for Pipe Flow Formula

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

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 J-Factor for Pipe Flow?

J-Factor for Pipe Flow calculator uses Colburn's j-factor = 0.023*(Reynolds Number)^(-0.2) to calculate the Colburn's j-factor, The J-Factor for Pipe Flow formula is defined as a successful and widely used analogy between heat, momentum, and mass transfer. J Factor is a dimensionless factor for heat transfer coefficient for calculating the heat transfer coefficient in the design and performance prediction of heat exchangers. Colburn's j-factor is denoted by j_H symbol.

How to calculate J-Factor for Pipe Flow using this online calculator? To use this online calculator for J-Factor for Pipe Flow, enter Reynolds Number (Re) and hit the calculate button. Here is how the J-Factor for Pipe Flow calculation can be explained with given input values -> 0.004187 = 0.023*(3125)^(-0.2).

FAQ

What is J-Factor for Pipe Flow?

The J-Factor for Pipe Flow formula is defined as a successful and widely used analogy between heat, momentum, and mass transfer. J Factor is a dimensionless factor for heat transfer coefficient for calculating the heat transfer coefficient in the design and performance prediction of heat exchangers and is represented as j_H = 0.023*(Re)^(-0.2) or Colburn's j-factor = 0.023*(Reynolds Number)^(-0.2). Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.

How to calculate J-Factor for Pipe Flow?

The J-Factor for Pipe Flow formula is defined as a successful and widely used analogy between heat, momentum, and mass transfer. J Factor is a dimensionless factor for heat transfer coefficient for calculating the heat transfer coefficient in the design and performance prediction of heat exchangers is calculated using Colburn's j-factor = 0.023*(Reynolds Number)^(-0.2). To calculate J-Factor for Pipe Flow, you need Reynolds Number (Re). With our tool, you need to enter the respective value for Reynolds Number 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 Colburn's j-factor?

In this formula, Colburn's j-factor uses Reynolds Number. We can use 2 other way(s) to calculate the same, which is/are as follows -

Colburn's j-factor = Nusselt Number/((Reynolds Number)*(Prandtl Number)^(1/3))
Colburn's j-factor = Fanning Friction Factor/2

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