## Reynolds Number using Average Heat Transfer Coefficient for Condensate Film Solution

STEP 0: Pre-Calculation Summary
Formula Used
Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film))
Ref = ((4*h ̅*L* (TSat-Tw))/ (hfg*μf))
This formula uses 7 Variables
Variables Used
Reynolds Number of Film - Reynolds Number of Film is the ratio of Inertial force to the viscous force.
Average Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Average Heat Transfer Coefficient is equal to the heat flow (Q) across the heat-transfer surface divided by the average temperature (Δt) and the area of the heat-transfer surface (A).
Length of Plate - (Measured in Meter) - Length of Plate is the distance between two extreme points along one side of the base plate.
Saturated Temperature - (Measured in Kelvin) - Saturated temperature is the temperature at which a given liquid and its vapour or a given solid and its vapour can co-exist in equilibrium, at a given pressure.
Plate Surface Temperature - (Measured in Kelvin) - Plate Surface Temperature is the temperature at the surface of the plate.
Latent Heat of Vaporization - (Measured in Joule per Kilogram) - Latent Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.
Viscosity of Film - (Measured in Pascal Second) - Viscosity of Film is a measure of its resistance to deformation at a given rate.
STEP 1: Convert Input(s) to Base Unit
Average Heat Transfer Coefficient: 450 Watt per Square Meter per Kelvin --> 450 Watt per Square Meter per Kelvin No Conversion Required
Length of Plate: 0.05 Meter --> 0.05 Meter No Conversion Required
Saturated Temperature: 373 Kelvin --> 373 Kelvin No Conversion Required
Plate Surface Temperature: 82 Kelvin --> 82 Kelvin No Conversion Required
Latent Heat of Vaporization: 2260000 Joule per Kilogram --> 2260000 Joule per Kilogram No Conversion Required
Viscosity of Film: 0.029 Newton Second per Square Meter --> 0.029 Pascal Second (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ref = ((4*h ̅*L* (TSat-Tw))/ (hfgf)) --> ((4*450*0.05* (373-82))/ (2260000*0.029))
Evaluating ... ...
Ref = 0.399603295697284
STEP 3: Convert Result to Output's Unit
0.399603295697284 --> No Conversion Required
0.399603295697284 <-- Reynolds Number of Film
(Calculation completed in 00.015 seconds)
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## < 20 Boiling and Condensation Formulas Calculators

Film Thickness in Film Condensation
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
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
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 = (([Stefan-BoltZ]*Emissivity*(((Plate Surface Temperature)^4)-((Saturated Temperature)^4)))/(Plate Surface Temperature-Saturated Temperature))
Total Heat Transfer Coefficient
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
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
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
Viscosity of Film = Density of Liquid*(Density of Liquid-Density of Vapor)*[g]*(Film Thickness^3)/(3*Mass Flow Rate)
Modified Heat of Vaporization
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
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
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
Viscosity of Fluid = (4*Mass Flow of Condensate)/(Wetted Perimeter*Reynolds Number of Film)
Wetted Perimeter given Reynolds Number of Film
Wetted Perimeter = (4*Mass Flow of Condensate)/(Reynolds Number of Film*Viscosity of Fluid)
Reynolds Number for Condensate Film
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
Mass Flow of Condensate = (Reynolds Number of Film*Wetted Perimeter*Viscosity of Fluid)/4
Corelation for Forced Convection Local Boiling Inside Vertical Tubes
Heat Transfer Coefficient = (2.54*((Excess Temperature)^3)*exp((Pressure)/1.551))
Heat Transfer Coefficient given Biot Number
Heat Transfer Coefficient = (Biot Number*Thermal Conductivity)/Thickness of Wall
Saturated Temperature given Excess Temperature
Saturated Temperature = Surface Temperature-Excess Temperature in Heat Transfer
Surface Temperature given Excess Temperature
Surface Temperature = Saturated Temperature+Excess Temperature in Heat Transfer
Excess Temperature in Boiling
Excess Temperature in Heat Transfer = Surface Temperature-Saturated Temperature

## Reynolds Number using Average Heat Transfer Coefficient for Condensate Film Formula

Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film))
Ref = ((4*h ̅*L* (TSat-Tw))/ (hfg*μf))

## 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 using Average Heat Transfer Coefficient for Condensate Film?

Reynolds Number using Average Heat Transfer Coefficient for Condensate Film calculator uses Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film)) to calculate the Reynolds Number of Film, The Reynolds Number using Average Heat Transfer coefficient for Condensate Film formula is defined as ratio of the product of [4, average HT coefficient , length of plate, difference of saturated temp and temp of plate ] to the product of [latent heat of vaporization and viscosity of film]. Reynolds Number of Film is denoted by Ref symbol.

How to calculate Reynolds Number using Average Heat Transfer Coefficient for Condensate Film using this online calculator? To use this online calculator for Reynolds Number using Average Heat Transfer Coefficient for Condensate Film, enter Average Heat Transfer Coefficient (h ̅), Length of Plate (L), Saturated Temperature (TSat), Plate Surface Temperature (Tw), Latent Heat of Vaporization (hfg) & Viscosity of Film f) and hit the calculate button. Here is how the Reynolds Number using Average Heat Transfer Coefficient for Condensate Film calculation can be explained with given input values -> 0.399603 = ((4*450*0.05* (373-82))/ (2260000*0.029)).

### FAQ

What is Reynolds Number using Average Heat Transfer Coefficient for Condensate Film?
The Reynolds Number using Average Heat Transfer coefficient for Condensate Film formula is defined as ratio of the product of [4, average HT coefficient , length of plate, difference of saturated temp and temp of plate ] to the product of [latent heat of vaporization and viscosity of film] and is represented as Ref = ((4*h ̅*L* (TSat-Tw))/ (hfg*μf)) or Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film)). Average Heat Transfer Coefficient is equal to the heat flow (Q) across the heat-transfer surface divided by the average temperature (Δt) and the area of the heat-transfer surface (A), Length of Plate is the distance between two extreme points along one side of the base plate, Saturated temperature is the temperature at which a given liquid and its vapour or a given solid and its vapour can co-exist in equilibrium, at a given pressure, Plate Surface Temperature is the temperature at the surface of the plate, Latent Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure & Viscosity of Film is a measure of its resistance to deformation at a given rate.
How to calculate Reynolds Number using Average Heat Transfer Coefficient for Condensate Film?
The Reynolds Number using Average Heat Transfer coefficient for Condensate Film formula is defined as ratio of the product of [4, average HT coefficient , length of plate, difference of saturated temp and temp of plate ] to the product of [latent heat of vaporization and viscosity of film] is calculated using Reynolds Number of Film = ((4*Average Heat Transfer Coefficient*Length of Plate* (Saturated Temperature-Plate Surface Temperature))/ (Latent Heat of Vaporization*Viscosity of Film)). To calculate Reynolds Number using Average Heat Transfer Coefficient for Condensate Film, you need Average Heat Transfer Coefficient (h ̅), Length of Plate (L), Saturated Temperature (TSat), Plate Surface Temperature (Tw), Latent Heat of Vaporization (hfg) & Viscosity of Film f). With our tool, you need to enter the respective value for Average Heat Transfer Coefficient, Length of Plate, Saturated Temperature, Plate Surface Temperature, Latent Heat of Vaporization & Viscosity of Film 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 Average Heat Transfer Coefficient, Length of Plate, Saturated Temperature, Plate Surface Temperature, Latent Heat of Vaporization & Viscosity of Film. We can use 1 other way(s) to calculate the same, which is/are as follows -
• Reynolds Number of Film = (4*Mass Flow of Condensate)/(Wetted Perimeter*Viscosity of Fluid) Let Others Know