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Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Formula

GoAverage Heat Transfer Coefficient for Condensation Inside Horizontal Tubes for Low Vapor Velocity Formula

GoAverage Heat Transfer Coefficient for Laminar Film Condensation on Outside of Sphere Formula

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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). Check FAQs

h ̅ = 0.725 \cdot {(\frac{ρ f \cdot (ρ f - ρ v) \cdot [g] \cdot h fg \cdot ({k f}^{3})}{D Tube \cdot μ f \cdot (T Sat - T w)})}^{0.25}

h ̅ - Average Heat Transfer Coefficient?ρ_f - Density of Liquid Film?ρ_v - Density of Vapor?h_fg - Latent Heat of Vaporization?k_f - Thermal Conductivity of Film Condensate?D_Tube - Diameter of Tube?μ_f - Viscosity of Film?T_Sat - Saturation Temperature?T_w - Plate Surface Temperature?[g] - Gravitational acceleration on Earth?

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Example

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Here is how the Average Heat Transfer Coefficient for Laminar Film Condensation of Tube equation looks like with Values.

Here is how the Average Heat Transfer Coefficient for Laminar Film Condensation of Tube equation looks like with Units.

Here is how the Average Heat Transfer Coefficient for Laminar Film Condensation of Tube equation looks like.

119.8098 = 0.725 \cdot {(\frac{96 \cdot (96 - 0.5) \cdot 9.8066 \cdot 2.3E+6 \cdot ({0.67}^{3})}{9.71 \cdot 0.029 \cdot (373 - 82)})}^{0.25}

119.8098W/m²*K = 0.725 \cdot {(\frac{96kg/m³ \cdot (96kg/m³ - 0.5kg/m³) \cdot 9.8066m/s² \cdot 2.3E+6J/kg \cdot ({0.67W/(m*K)}^{3})}{9.71m \cdot 0.029N*s/m² \cdot (373K - 82K)})}^{0.25}

119.8098 = 0.725 \cdot {(\frac{96 \cdot (96 - 0.5) \cdot 9.8066 \cdot 2.3E+6 \cdot ({0.67}^{3})}{9.71 \cdot 0.029 \cdot (373 - 82)})}^{0.25}

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Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Solution

Follow our step by step solution on how to calculate Average Heat Transfer Coefficient for Laminar Film Condensation of Tube?

FIRST Step Consider the formula

h ̅ = 0.725 \cdot {(\frac{ρ f \cdot (ρ f - ρ v) \cdot [g] \cdot h fg \cdot ({k f}^{3})}{D Tube \cdot μ f \cdot (T Sat - T w)})}^{0.25}

Next Step Substitute values of Variables

∴

h ̅ = 0.725 \cdot {(\frac{96kg/m³ \cdot (96kg/m³ - 0.5kg/m³) \cdot [g] \cdot 2.3E+6J/kg \cdot ({0.67W/(m*K)}^{3})}{9.71m \cdot 0.029N*s/m² \cdot (373K - 82K)})}^{0.25}

Next Step Substitute values of Constants

∴

h ̅ = 0.725 \cdot {(\frac{96kg/m³ \cdot (96kg/m³ - 0.5kg/m³) \cdot 9.8066m/s² \cdot 2.3E+6J/kg \cdot ({0.67W/(m*K)}^{3})}{9.71m \cdot 0.029N*s/m² \cdot (373K - 82K)})}^{0.25}

Next Step Convert Units

∴

h ̅ = 0.725 \cdot {(\frac{96kg/m³ \cdot (96kg/m³ - 0.5kg/m³) \cdot 9.8066m/s² \cdot 2.3E+6J/kg \cdot ({0.67W/(m*K)}^{3})}{9.71m \cdot 0.029Pa*s \cdot (373K - 82K)})}^{0.25}

Next Step Prepare to Evaluate

∴

h ̅ = 0.725 \cdot {(\frac{96 \cdot (96 - 0.5) \cdot 9.8066 \cdot 2.3E+6 \cdot ({0.67}^{3})}{9.71 \cdot 0.029 \cdot (373 - 82)})}^{0.25}

Next Step Evaluate

∴

h ̅ = 119.809838909425W/m²*K

LAST Step Rounding Answer

∴

h ̅ = 119.8098W/m²*K

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Formula Elements

Variables

Constants

Average Heat Transfer Coefficient

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).

Symbol: h ̅

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Average Heat Transfer Coefficient

Density of Liquid Film

Density of Liquid Film is defined as the density of the liquid film which is considered for film condensation.

Symbol: ρ_f

Measurement: DensityUnit: kg/m³

Note: Value should be greater than 0.

Formulas to find Density of Liquid Film

Density of Vapor

The Density of Vapor is the mass of a unit volume of a material substance.

Symbol: ρ_v

Measurement: DensityUnit: kg/m³

Note: Value can be positive or negative.

Formulas to find Density of Vapor

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.

Symbol: h_fg

Measurement: Latent HeatUnit: J/kg

Note: Value should be greater than 0.

Formulas to find Latent Heat of Vaporization

Thermal Conductivity of Film Condensate

Thermal Conductivity of Film Condensate is defined as the ability of the film to conduct heat.

Symbol: k_f

Measurement: Thermal ConductivityUnit: W/(m*K)

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity of Film Condensate

Diameter of Tube

Diameter of Tube is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Symbol: D_Tube

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Diameter of Tube

Viscosity of Film

Viscosity of Film is a measure of its resistance to deformation at a given rate.

Symbol: μ_f

Measurement: Dynamic ViscosityUnit: N*s/m²

Note: Value should be greater than 0.

Formulas to find Viscosity of Film

Saturation Temperature

Saturation 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.

Symbol: T_Sat

Measurement: TemperatureUnit: K

Note: Value should be greater than 0.

Formulas to find Saturation Temperature

Plate Surface Temperature

Plate Surface Temperature is the temperature at the surface of the plate.

Symbol: T_w

Measurement: TemperatureUnit: K

Note: Value should be greater than 0.

Formulas to find Plate Surface Temperature

Gravitational acceleration on Earth

Gravitational acceleration on Earth means that the velocity of an object in free fall will increase by 9.8 m/s2 every second.

Symbol: [g]

Value: 9.80665 m/s²

Other Formulas to find Average Heat Transfer Coefficient

Go Average Heat Transfer Coefficient for Condensation Inside Horizontal Tubes for Low Vapor Velocity

h ̅ = 0.555 \cdot {(\frac{ρ f \cdot (ρ f - ρ v) \cdot [g] \cdot h' fg \cdot ({k f}^{3})}{L \cdot D Tube \cdot (T Sat - T w)})}^{0.25}

Go Average Heat Transfer Coefficient for Laminar Film Condensation on Outside of Sphere

h ̅ = 0.815 \cdot {(\frac{ρ f \cdot (ρ f - ρ v) \cdot [g] \cdot h fg \cdot ({k f}^{3})}{D Sphere \cdot μ f \cdot (T Sat - T w)})}^{0.25}

Other formulas in Important Formulas of Condensation Number, Average Heat Transfer Coefficient and Heat Flux category

Go Film Thickness given Mass Flow of Condensate

δ = {(\frac{3 \cdot μ f \cdot ṁ}{ρ L \cdot (ρ L - ρ v) \cdot [g]})}^{\frac{1}{3}}

Go Condensation Number

Co = (h ̅) \cdot ({(\frac{{(μ f)}^{2}}{(k^{3}) \cdot (ρ f) \cdot (ρ f - ρ v) \cdot [g]})}^{\frac{1}{3}})

How to Evaluate Average Heat Transfer Coefficient for Laminar Film Condensation of Tube?

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube evaluator uses Average Heat Transfer Coefficient = 0.725*((Density of Liquid Film*(Density of Liquid Film-Density of Vapor)*[g]*Latent Heat of Vaporization*(Thermal Conductivity of Film Condensate^3))/(Diameter of Tube*Viscosity of Film*(Saturation Temperature-Plate Surface Temperature)))^(0.25) to evaluate the Average Heat Transfer Coefficient, The Average Heat Transfer Coefficient for Laminar Film Condensation of Tube formula is a function of latent heat, thermal conductivity, acceleration due to gravity, density of liquid film & vapor, diameter, viscosity of film, saturated temp and temp of plate. Average Heat Transfer Coefficient is denoted by h ̅ symbol.

How to evaluate Average Heat Transfer Coefficient for Laminar Film Condensation of Tube using this online evaluator? To use this online evaluator for Average Heat Transfer Coefficient for Laminar Film Condensation of Tube, enter Density of Liquid Film (ρ_f), Density of Vapor (ρ_v), Latent Heat of Vaporization (h_fg), Thermal Conductivity of Film Condensate (k_f), Diameter of Tube (D_Tube), Viscosity of Film (μ_f), Saturation Temperature (T_Sat) & Plate Surface Temperature (T_w) and hit the calculate button.

FAQs on Average Heat Transfer Coefficient for Laminar Film Condensation of Tube

What is the formula to find Average Heat Transfer Coefficient for Laminar Film Condensation of Tube?

The formula of Average Heat Transfer Coefficient for Laminar Film Condensation of Tube is expressed as Average Heat Transfer Coefficient = 0.725*((Density of Liquid Film*(Density of Liquid Film-Density of Vapor)*[g]*Latent Heat of Vaporization*(Thermal Conductivity of Film Condensate^3))/(Diameter of Tube*Viscosity of Film*(Saturation Temperature-Plate Surface Temperature)))^(0.25). Here is an example- 119.8098 = 0.725*((96*(96-0.5)*[g]*2260000*(0.67^3))/(9.71*0.029*(373-82)))^(0.25).

How to calculate Average Heat Transfer Coefficient for Laminar Film Condensation of Tube?

With Density of Liquid Film (ρ_f), Density of Vapor (ρ_v), Latent Heat of Vaporization (h_fg), Thermal Conductivity of Film Condensate (k_f), Diameter of Tube (D_Tube), Viscosity of Film (μ_f), Saturation Temperature (T_Sat) & Plate Surface Temperature (T_w) we can find Average Heat Transfer Coefficient for Laminar Film Condensation of Tube using the formula - Average Heat Transfer Coefficient = 0.725*((Density of Liquid Film*(Density of Liquid Film-Density of Vapor)*[g]*Latent Heat of Vaporization*(Thermal Conductivity of Film Condensate^3))/(Diameter of Tube*Viscosity of Film*(Saturation Temperature-Plate Surface Temperature)))^(0.25). This formula also uses Gravitational acceleration on Earth constant(s).

What are the other ways to Calculate Average Heat Transfer Coefficient?

Here are the different ways to Calculate Average Heat Transfer Coefficient-

Average Heat Transfer Coefficient=0.555*((Density of Liquid Film*(Density of Liquid Film-Density of Vapor)*[g]*Corrected Latent Heat of Vaporization*(Thermal Conductivity of Film Condensate^3))/(Length of Plate*Diameter of Tube*(Saturation Temperature-Plate Surface Temperature)))^(0.25)
Average Heat Transfer Coefficient=0.815*((Density of Liquid Film*(Density of Liquid Film-Density of Vapor)*[g]*Latent Heat of Vaporization*(Thermal Conductivity of Film Condensate^3))/(Diameter of Sphere*Viscosity of Film*(Saturation Temperature-Plate Surface Temperature)))^(0.25)
Average Heat Transfer Coefficient=1.13*((Density of Liquid Film*(Density of Liquid Film-Density of Vapor)*[g]*Latent Heat of Vaporization*(Thermal Conductivity of Film Condensate^3))/(Length of Plate*Viscosity of Film*(Saturation Temperature-Plate Surface Temperature)))^(0.25)

Can the Average Heat Transfer Coefficient for Laminar Film Condensation of Tube be negative?

No, the Average Heat Transfer Coefficient for Laminar Film Condensation of Tube, measured in Heat Transfer Coefficient cannot be negative.

Which unit is used to measure Average Heat Transfer Coefficient for Laminar Film Condensation of Tube?

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube is usually measured using the Watt per Square Meter per Kelvin[W/m²*K] for Heat Transfer Coefficient. Watt per Square Meter per Celcius[W/m²*K], Joule per Second per Square Meter per Kelvin[W/m²*K], Kilocalorie (IT) per Hour per Square Foot per Celcius[W/m²*K] are the few other units in which Average Heat Transfer Coefficient for Laminar Film Condensation of Tube can be measured.

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Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Formula

​GoAverage Heat Transfer Coefficient for Condensation Inside Horizontal Tubes for Low Vapor Velocity Formula

​GoAverage Heat Transfer Coefficient for Laminar Film Condensation on Outside of Sphere Formula

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Example

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Solution

Average Heat Transfer Coefficient for Laminar Film Condensation of Tube Formula Elements

Other Formulas to find Average Heat Transfer Coefficient

Other formulas in Important Formulas of Condensation Number, Average Heat Transfer Coefficient and Heat Flux category

How to Evaluate Average Heat Transfer Coefficient for Laminar Film Condensation of Tube?

FAQs on Average Heat Transfer Coefficient for Laminar Film Condensation of Tube

Variable Name

GoAverage Heat Transfer Coefficient for Condensation Inside Horizontal Tubes for Low Vapor Velocity Formula

GoAverage Heat Transfer Coefficient for Laminar Film Condensation on Outside of Sphere Formula