Reynolds Number for Condensate Film Calculator

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✖Mass Flow of Condensate is the mass of a condensate which passes per unit of time.ⓘ Mass Flow of Condensate [ṁ₁]			+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%
✖The Viscosity of fluid is a measure of its resistance to deformation at a given rate.ⓘ Viscosity of Fluid [μ]			+10% -10%

✖Reynolds Number of Film is the ratio of Inertial force to the viscous force.ⓘ Reynolds Number for Condensate Film [Re_f]

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Reynolds Number for Condensate Film

Formula

`"Re"_{"f"} = (4*"ṁ"_{"1"})/("P"*"μ")`

Example

`"2666.667"=(4*"20000kg/s")/("3m"*"10N*s/m²")`

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Reynolds Number for Condensate Film Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid)
Re_f = (4*ṁ₁)/(P*μ)
This formula uses 4 Variables

Variables Used

Reynolds Number of Film - Reynolds Number of Film is the ratio of Inertial force to the viscous force.
Mass Flow of Condensate - (Measured in Kilogram per Second) - Mass Flow of Condensate is the mass of a condensate which passes per unit of time.
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.
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 Flow of Condensate: 20000 Kilogram per Second --> 20000 Kilogram per Second No Conversion Required
Wetted Perimeter: 3 Meter --> 3 Meter No Conversion Required
Viscosity of Fluid: 10 Newton Second per Square Meter --> 10 Pascal Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Re_f = (4*ṁ₁)/(P*μ) --> (4*20000)/(3*10)

Evaluating ... ...

Re_f = 2666.66666666667

STEP 3: Convert Result to Output's Unit

2666.66666666667 --> No Conversion Required

FINAL ANSWER

2666.66666666667 <-- Reynolds Number of Film

(Calculation completed in 00.011 seconds)

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

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< 20 Boiling and Condensation Formulas Calculators

Film Thickness in Film Condensation

Go Film Thickness = ((4*Viscosity of Film*Thermal Conductivity*Height of Film*(Saturated Temperature-Plate Surface Temperature))/([g]*Latent Heat of Vaporization*(Density of Liquid)*(Density of Liquid-Density of Vapor)))^(0.25)

Radius of Vapour Bubble in Mechanical Equilibrium in Superheated Liquid

Go Radius of Vapor Bubble = (2*Surface Tension*[R]*(Saturated Temperature^2))/(Pressure of Superheated Liquid*Enthalpy of Vaporization of Liquid*(Temperature of Superheated Liquid-Saturated Temperature))

Reynolds Number using Average Heat Transfer Coefficient for Condensate Film

Go Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film))

Radiation Heat Transfer Coefficient

Go Radiation Heat Transfer Coefficient = (([Stefan-BoltZ]*Emissivity*(((Plate Surface Temperature)^4)-((Saturated Temperature)^4)))/(Plate Surface Temperature-Saturated Temperature))

Total Heat Transfer Coefficient

Go Total Heat Transfer Coefficient = Heat Transfer Coefficient in Film Boiling Region* ((Heat Transfer Coefficient in Film Boiling Region/Heat Transfer Coefficient)^(1/3))+Radiation Heat Transfer Coefficient

Film Thickness given Mass Flow of Condensate

Go Film Thickness = ((3*Viscosity of Film*Mass Flow Rate)/(Density of Liquid*(Density of Liquid-Density of Vapor)*[g]))^(1/3)

Mass Flow of Condensate through any X Position of Film

Go Mass Flow Rate = Density of Liquid*(Density of Liquid-Density of Vapor)*[g]*(Film Thickness^3)/(3*Viscosity of Film)

Viscosity of Film given Mass Flow of Condensate

Go Viscosity of Film = Density of Liquid*(Density of Liquid-Density of Vapor)*[g]*(Film Thickness^3)/(3*Mass Flow Rate)

Modified Heat of Vaporization

Go Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapour)*((Plate Surface Temperature-Saturated Temperature)/2))

Energy Balance for Non-linear Temperature Profile in Film

Go New Latent Heat of Vaporization = (Latent Heat of Vaporization+0.68*Specific Heat Capacity*(Saturated Temperature-Plate Surface Temperature))

Modified Heat Transfer Coefficient under Influence of Pressure

Go Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4))

Viscosity of Film given Reynolds Number of Film

Go Viscosity of Fluid = (4*Mass Flow of Condensate)/(Wetted Perimeter*Reynolds Number of Film)

Wetted Perimeter given Reynolds Number of Film

Go Wetted Perimeter = (4*Mass Flow of Condensate)/(Reynolds Number of Film*Viscosity of Fluid)

Reynolds Number for Condensate Film

Go Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid)

Mass Flow Rate of Condensate Film given Reynolds Number of Film

Go Mass Flow of Condensate = (Reynolds Number of Film*Wetted Perimeter*Viscosity of Fluid)/4

Corelation for Forced Convection Local Boiling Inside Vertical Tubes

Go Heat Transfer Coefficient = (2.54*((Excess Temperature)^3)*exp((Pressure)/1.551))

Heat Transfer Coefficient given Biot Number

Go Heat Transfer Coefficient = (Biot Number*Thermal Conductivity)/Thickness of Wall

Saturated Temperature given Excess Temperature

Go Saturated Temperature = Surface Temperature-Excess Temperature in Heat Transfer

Surface Temperature given Excess Temperature

Go Surface Temperature = Saturated Temperature+Excess Temperature in Heat Transfer

Excess Temperature in Boiling

Go Excess Temperature in Heat Transfer = Surface Temperature-Saturated Temperature

Reynolds Number for Condensate Film Formula

Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid)
Re_f = (4*ṁ₁)/(P*μ)

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 Reynolds Number for Condensate Film?

Reynolds Number for Condensate Film calculator uses Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid) to calculate the Reynolds Number of Film, The Reynolds Number for Condensate Film formula is defined as ratio of four times the mass flow rate of condensate to the product of wetted perimeter and viscosity. Reynolds Number of Film is denoted by Re_f symbol.

How to calculate Reynolds Number for Condensate Film using this online calculator? To use this online calculator for Reynolds Number for Condensate Film, enter Mass Flow of Condensate (ṁ₁), Wetted Perimeter (P) & Viscosity of Fluid (μ) and hit the calculate button. Here is how the Reynolds Number for Condensate Film calculation can be explained with given input values -> 2666.667 = (4*20000)/(3*10).

FAQ

What is Reynolds Number for Condensate Film?

The Reynolds Number for Condensate Film formula is defined as ratio of four times the mass flow rate of condensate to the product of wetted perimeter and viscosity and is represented as Re_f = (4*ṁ₁)/(P*μ) or Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid). Mass Flow of Condensate is the mass of a condensate which passes per unit of time, Wetted Perimeter is defined as the surface of the channel bottom and sides in direct contact with the aqueous body & The Viscosity of fluid is a measure of its resistance to deformation at a given rate.

How to calculate Reynolds Number for Condensate Film?

The Reynolds Number for Condensate Film formula is defined as ratio of four times the mass flow rate of condensate to the product of wetted perimeter and viscosity is calculated using Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid). To calculate Reynolds Number for Condensate Film, you need Mass Flow of Condensate (ṁ₁), Wetted Perimeter (P) & Viscosity of Fluid (μ). With our tool, you need to enter the respective value for Mass Flow of Condensate, Wetted Perimeter & Viscosity of Fluid 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 Reynolds Number of Film?

In this formula, Reynolds Number of Film uses Mass Flow of Condensate, Wetted Perimeter & Viscosity of Fluid. We can use 1 other way(s) to calculate the same, which is/are as follows -

Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film))

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