Reynolds number in heat exchanger Calculator

✖Mass Flux is the rate of mass flow. The common symbols are j, J, q, Q, φ, or Φ, sometimes with subscript m to indicate mass is the flowing quantity.ⓘ Mass Flux [Δm]			+10% -10%
✖Equivalent diameter is the diameter equivalent to the given value.ⓘ Equivalent Diameter [De]			+10% -10%
✖The Viscosity of fluid is a measure of its resistance to deformation at a given rate.ⓘ Viscosity of Fluid [μ]			+10% -10%

✖The 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. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.ⓘ Reynolds number in heat exchanger [Re]

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Reynolds number in heat exchanger Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid)
Re = (Δm*De)/(μ)
This formula uses 4 Variables

Variables Used

Reynolds Number - The 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. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
Mass Flux - (Measured in Kilogram per Second per Square Meter) - Mass Flux is the rate of mass flow. The common symbols are j, J, q, Q, φ, or Φ, sometimes with subscript m to indicate mass is the flowing quantity.
Equivalent Diameter - (Measured in Meter) - Equivalent diameter is the diameter equivalent to the given value.
Viscosity of Fluid - (Measured in Pascal Second) - The Viscosity of fluid is a measure of its resistance to deformation at a given rate.

STEP 1: Convert Input(s) to Base Unit

Mass Flux: 0.001 Kilogram per Second per Square Meter --> 0.001 Kilogram per Second per Square Meter No Conversion Required
Equivalent Diameter: 0.015 Meter --> 0.015 Meter No Conversion Required
Viscosity of Fluid: 8.23 Newton Second per Square Meter --> 8.23 Pascal Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Re = (Δm*De)/(μ) --> (0.001*0.015)/(8.23)

Evaluating ... ...

Re = 1.82260024301337E-06

STEP 3: Convert Result to Output's Unit

1.82260024301337E-06 --> No Conversion Required

FINAL ANSWER

1.82260024301337E-06 ≈ 1.8E-6 <-- Reynolds Number

(Calculation completed in 00.004 seconds)

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Created by Nishan Poojary

Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi

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< Heat Transfer Through Fin Calculators

Overall heat transfer coefficient

LaTeX Go Overall Heat Transfer Coefficient = Heat Flow Rate/(Area*Logarithmic Mean Temperature Difference)

Heat flow required

LaTeX Go Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference

Mass flux of fluid in transverse fin heat exchanger

LaTeX Go Mass Flux = (Reynolds Number(e)*Viscosity of Fluid)/Equivalent Diameter

Reynolds number in heat exchanger

LaTeX Go Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid)

Reynolds number in heat exchanger Formula

LaTeX Go

Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid)
Re = (Δm*De)/(μ)

What is Heat exchanger?

A heat exchanger is a system used to transfer heat between two or more fluids. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant.

How to Calculate Reynolds number in heat exchanger?

Reynolds number in heat exchanger calculator uses Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid) to calculate the Reynolds Number, The Reynolds number in heat exchanger formula is defined as the inertia force of the fluid to the viscous force of the fluid. Reynolds Number is denoted by Re symbol.

How to calculate Reynolds number in heat exchanger using this online calculator? To use this online calculator for Reynolds number in heat exchanger, enter Mass Flux (Δm), Equivalent Diameter (De) & Viscosity of Fluid (μ) and hit the calculate button. Here is how the Reynolds number in heat exchanger calculation can be explained with given input values -> 1.8E-6 = (0.001*0.015)/(8.23).

FAQ

What is Reynolds number in heat exchanger?

The Reynolds number in heat exchanger formula is defined as the inertia force of the fluid to the viscous force of the fluid and is represented as Re = (Δm*De)/(μ) or Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid). Mass Flux is the rate of mass flow. The common symbols are j, J, q, Q, φ, or Φ, sometimes with subscript m to indicate mass is the flowing quantity, Equivalent diameter is the diameter equivalent to the given value & The Viscosity of fluid is a measure of its resistance to deformation at a given rate.

How to calculate Reynolds number in heat exchanger?

The Reynolds number in heat exchanger formula is defined as the inertia force of the fluid to the viscous force of the fluid is calculated using Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid). To calculate Reynolds number in heat exchanger, you need Mass Flux (Δm), Equivalent Diameter (De) & Viscosity of Fluid (μ). With our tool, you need to enter the respective value for Mass Flux, Equivalent Diameter & Viscosity of Fluid 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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