Colburn's j-factor Calculator

✖The Stanton Number is a dimensionless number that measures the ratio of heat transferred into a fluid to the thermal capacity of the fluid.ⓘ Stanton Number [St]			+10% -10%
✖The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity.ⓘ Prandtl Number [Pr]			+10% -10%

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

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Colburn's j-factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3)
j_H = St*(Pr)^(2/3)
This formula uses 3 Variables

Variables Used

Colburn's j-factor - Colburn's j-factor is a non-dimensional parameter that arises in convective heat transfer analysis.
Stanton Number - The Stanton Number is a dimensionless number that measures the ratio of heat transferred into a fluid to the thermal capacity of the fluid.
Prandtl Number - The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity.

STEP 1: Convert Input(s) to Base Unit

Stanton Number: 0.4 --> No Conversion Required
Prandtl Number: 0.7 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

j_H = St*(Pr)^(2/3) --> 0.4*(0.7)^(2/3)

Evaluating ... ...

j_H = 0.31534940652421

STEP 3: Convert Result to Output's Unit

0.31534940652421 --> No Conversion Required

FINAL ANSWER

0.31534940652421 ≈ 0.315349 <-- Colburn's j-factor

(Calculation completed in 00.005 seconds)

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Credits

Created by Ravi Khiyani

Indian Institute of Technology, Madras (IIT Madras), Chennai

Ravi Khiyani has created this Calculator and 200+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Calculator and 2500+ more calculators!

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Colburn's j-factor Formula

LaTeX Go

Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3)
j_H = St*(Pr)^(2/3)

What is Colburn's j-factor?

The j-factor or Colburn jH-factor or the Colburn-Chilton j-factor is a dimensionless factor for heat transfer that was first proposed by Prof. Colburn. The primary advantage of the j factor is its use in determining the heat transfer coefficient. It has been extensively used for calculating the heat transfer coefficient in the design & performance prediction of heat exchangers, particularly compact heat exchangers.

How to Calculate Colburn's j-factor?

Colburn's j-factor calculator uses Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3) to calculate the Colburn's j-factor, Colburn's j-factor formula calculates the j-factor which has been extensively used for calculating the heat transfer coefficient in the design & performance prediction of heat exchangers, particularly compact heat exchangers. Colburn's j-factor is denoted by j_H symbol.

How to calculate Colburn's j-factor using this online calculator? To use this online calculator for Colburn's j-factor, enter Stanton Number (St) & Prandtl Number (Pr) and hit the calculate button. Here is how the Colburn's j-factor calculation can be explained with given input values -> 0.078837 = 0.4*(0.7)^(2/3).

FAQ

What is Colburn's j-factor?

Colburn's j-factor formula calculates the j-factor which has been extensively used for calculating the heat transfer coefficient in the design & performance prediction of heat exchangers, particularly compact heat exchangers and is represented as j_H = St*(Pr)^(2/3) or Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3). The Stanton Number is a dimensionless number that measures the ratio of heat transferred into a fluid to the thermal capacity of the fluid & The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity.

How to calculate Colburn's j-factor?

Colburn's j-factor formula calculates the j-factor which has been extensively used for calculating the heat transfer coefficient in the design & performance prediction of heat exchangers, particularly compact heat exchangers is calculated using Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3). To calculate Colburn's j-factor, you need Stanton Number (St) & Prandtl Number (Pr). With our tool, you need to enter the respective value for Stanton Number & Prandtl Number and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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