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## Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D Solution

STEP 0: Pre-Calculation Summary
Formula Used
Average Heat Transfer Coefficient = 0.725*(((Thermal Conductivity^3)*(Density of Liquid Condensate^2)*Acceleration Due To Gravity*Latent Heat of Vaporization)/(Number of tubes*Diameter of Tube*Viscosity of Film*Temperature Difference))^(1/4)
h ̅ = 0.725*(((k^3)*(ρf^2)*g*hfg)/(N*d*μf*ΔT))^(1/4)
This formula uses 8 Variables
Variables Used
Thermal Conductivity - Thermal Conductivity is the rate at which heat passes through a specified material, expressed as the amount of heat that flows per unit time through a unit area with a temperature gradient of one degree per unit distance. (Measured in Watt per Meter per K)
Density of Liquid Condensate - The Density of Liquid Condensate is the mass of a unit volume of the liquid condensate. (Measured in Kilogram per Meter³)
Acceleration Due To Gravity - The Acceleration Due To Gravity is acceleration gained by an object because of gravitational force. (Measured in Meter per Square Second)
Latent Heat of Vaporization - Latent heat of vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. (Measured in Kilojoule per Kilogram)
Number of tubes- Number of tubes is the total count of the tubes.
Diameter of Tube - Diameter of tube is defined as the OUTSIDE DIAMETER (O.D.), specified in inches (e.g., 1.250) or fraction of an inch (eg. 1-1/4″). (Measured in Meter)
Viscosity of Film - Viscosity of Film is a measure of its resistance to deformation at a given rate. (Measured in Newton Second per Meter²)
Temperature Difference - Temperature Difference is the measure of the hotness or the coldness of an object. (Measured in Kelvin)
STEP 1: Convert Input(s) to Base Unit
Thermal Conductivity: 10 Watt per Meter per K --> 10 Watt per Meter per K No Conversion Required
Density of Liquid Condensate: 10 Kilogram per Meter³ --> 10 Kilogram per Meter³ No Conversion Required
Acceleration Due To Gravity: 9.8 Meter per Square Second --> 9.8 Meter per Square Second No Conversion Required
Latent Heat of Vaporization: 2260 Kilojoule per Kilogram --> 2260000 Joule per Kilogram (Check conversion here)
Number of tubes: 10 --> No Conversion Required
Diameter of Tube: 90 Meter --> 90 Meter No Conversion Required
Viscosity of Film: 0.00029 Newton Second per Meter² --> 0.00029 Pascal Second (Check conversion here)
Temperature Difference: 20 Kelvin --> 20 Kelvin No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
h ̅ = 0.725*(((k^3)*(ρf^2)*g*hfg)/(N*d*μf*ΔT))^(1/4) --> 0.725*(((10^3)*(10^2)*9.8*2260000)/(10*90*0.00029*20))^(1/4)
Evaluating ... ...
h ̅ = 585.13221536859
STEP 3: Convert Result to Output's Unit
585.13221536859 Watt per Meter² per K --> No Conversion Required
FINAL ANSWER
585.13221536859 Watt per Meter² per K <-- Average Heat Transfer Coefficient
(Calculation completed in 00.016 seconds)

## < 10+ Heat Transfer in Condenser Calculators

Thickness of Tube when Heat transfer takes places from outside to inside surface of tube
Tube Thickness = (Thermal Conductivity*Surface Area*(Outside Surface Temperature-Inside Surface temperature))/Heat Transfer Go
Heat transfer takes place from outside surface to inside surface of tube
Heat Transfer = (Thermal Conductivity*Surface Area*(Outside Surface Temperature-Inside Surface temperature))/Tube Thickness Go
Temperature of the refrigerant vapour condensing film in terms of heat transfer
Vapour condensing film temperature = (Heat Transfer/(Heat Transfer Coefficient*Area))+Outside Surface Temperature Go
Temperature at the outside surface of the tube in terms of heat transfer
Outside Surface Temperature = Vapour condensing film temperature-(Heat Transfer/(Heat Transfer Coefficient*Area)) Go
Heat Transfer takes place from vapour refrigerant to outside of tube
Heat Transfer = Heat Transfer Coefficient*Area*(Vapour condensing film temperature-Outside Surface Temperature) Go
Heat Transfer in Condenser in terms of Overall Heat Transfer Coefficient
Heat Transfer = Overall Heat Transfer Coefficient*Surface Area*Temperature Difference Go
Overall Temperature difference when Heat Transfer from vapour refrigerant to outside of tube
Overall Temperature Difference = Heat Transfer/(Heat Transfer Coefficient*Area) Go
Overall Temperature difference in terms of Heat Transfer
Overall Temperature Difference = Heat Transfer*Thermal Resistance Go
Overall thermal resistance in condenser
Thermal Resistance = Overall Temperature Difference/Heat Transfer Go
Heat Transfer in Condenser in terms of Overall thermal resistance
Heat Transfer = Temperature Difference/Thermal Resistance Go

### Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D Formula

Average Heat Transfer Coefficient = 0.725*(((Thermal Conductivity^3)*(Density of Liquid Condensate^2)*Acceleration Due To Gravity*Latent Heat of Vaporization)/(Number of tubes*Diameter of Tube*Viscosity of Film*Temperature Difference))^(1/4)
h ̅ = 0.725*(((k^3)*(ρf^2)*g*hfg)/(N*d*μf*ΔT))^(1/4)

## What is Nusselt theory?

In condensation on a vertical surface, a film of condensate is formed and further condensation and heat transfer to the surface occurs by conduction through the film which is assumed to be laminar flow downward.

## How to Calculate Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D?

Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D calculator uses Average Heat Transfer Coefficient = 0.725*(((Thermal Conductivity^3)*(Density of Liquid Condensate^2)*Acceleration Due To Gravity*Latent Heat of Vaporization)/(Number of tubes*Diameter of Tube*Viscosity of Film*Temperature Difference))^(1/4) to calculate the Average Heat Transfer Coefficient, Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D formula gives the value of the average coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D using the Nusselt theory or Laminar liquid film theory. Average Heat Transfer Coefficient is denoted by h ̅ symbol.

How to calculate Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D using this online calculator? To use this online calculator for Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D, enter Thermal Conductivity (k), Density of Liquid Condensate f), Acceleration Due To Gravity (g), Latent Heat of Vaporization (hfg), Number of tubes (N), Diameter of Tube (d), Viscosity of Film f) & Temperature Difference (ΔT) and hit the calculate button. Here is how the Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D calculation can be explained with given input values -> 585.1322 = 0.725*(((10^3)*(10^2)*9.8*2260000)/(10*90*0.00029*20))^(1/4).

### FAQ

What is Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D?
Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D formula gives the value of the average coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D using the Nusselt theory or Laminar liquid film theory and is represented as h ̅ = 0.725*(((k^3)*(ρf^2)*g*hfg)/(N*d*μf*ΔT))^(1/4) or Average Heat Transfer Coefficient = 0.725*(((Thermal Conductivity^3)*(Density of Liquid Condensate^2)*Acceleration Due To Gravity*Latent Heat of Vaporization)/(Number of tubes*Diameter of Tube*Viscosity of Film*Temperature Difference))^(1/4). Thermal Conductivity is the rate at which heat passes through a specified material, expressed as the amount of heat that flows per unit time through a unit area with a temperature gradient of one degree per unit distance, The Density of Liquid Condensate is the mass of a unit volume of the liquid condensate, The Acceleration Due To Gravity is acceleration gained by an object because of gravitational force, Latent heat of vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure, Number of tubes is the total count of the tubes, Diameter of tube is defined as the OUTSIDE DIAMETER (O.D.), specified in inches (e.g., 1.250) or fraction of an inch (eg. 1-1/4″), Viscosity of Film is a measure of its resistance to deformation at a given rate & Temperature Difference is the measure of the hotness or the coldness of an object.
How to calculate Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D?
Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D formula gives the value of the average coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D using the Nusselt theory or Laminar liquid film theory is calculated using Average Heat Transfer Coefficient = 0.725*(((Thermal Conductivity^3)*(Density of Liquid Condensate^2)*Acceleration Due To Gravity*Latent Heat of Vaporization)/(Number of tubes*Diameter of Tube*Viscosity of Film*Temperature Difference))^(1/4). To calculate Average Coefficient of heat transfer for vapour condensing outside of horizontal tubes of diameter D, you need Thermal Conductivity (k), Density of Liquid Condensate f), Acceleration Due To Gravity (g), Latent Heat of Vaporization (hfg), Number of tubes (N), Diameter of Tube (d), Viscosity of Film f) & Temperature Difference (ΔT). With our tool, you need to enter the respective value for Thermal Conductivity, Density of Liquid Condensate, Acceleration Due To Gravity, Latent Heat of Vaporization, Number of tubes, Diameter of Tube, Viscosity of Film & Temperature Difference 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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