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Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature 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 ̅ = \frac{0.026 \cdot ({P f}^{\frac{1}{3}}) \cdot ({Re m}^{0.8}) \cdot (K f)}{D Tube}

h ̅ - Average Heat Transfer Coefficient?P_f - Prandtl Number at Film Temperature?Re_m - Reynolds Number for Mixing?K_f - Thermal Conductivity at Film Temperature?D_Tube - Diameter of Tube?

Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature Example

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Here is how the Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature equation looks like with Values.

Here is how the Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature equation looks like with Units.

Here is how the Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature equation looks like.

0.7828 = \frac{0.026 \cdot ({0.95}^{\frac{1}{3}}) \cdot (2000^{0.8}) \cdot (0.68)}{9.71}

0.7828W/m²*K = \frac{0.026 \cdot ({0.95}^{\frac{1}{3}}) \cdot (2000^{0.8}) \cdot (0.68W/(m*K))}{9.71m}

0.7828 = \frac{0.026 \cdot ({0.95}^{\frac{1}{3}}) \cdot (2000^{0.8}) \cdot (0.68)}{9.71}

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Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature Solution

Follow our step by step solution on how to calculate Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature?

FIRST Step Consider the formula

h ̅ = \frac{0.026 \cdot ({P f}^{\frac{1}{3}}) \cdot ({Re m}^{0.8}) \cdot (K f)}{D Tube}

Next Step Substitute values of Variables

∴

h ̅ = \frac{0.026 \cdot ({0.95}^{\frac{1}{3}}) \cdot (2000^{0.8}) \cdot (0.68W/(m*K))}{9.71m}

Next Step Prepare to Evaluate

∴

h ̅ = \frac{0.026 \cdot ({0.95}^{\frac{1}{3}}) \cdot (2000^{0.8}) \cdot (0.68)}{9.71}

Next Step Evaluate

∴

h ̅ = 0.782819368451114W/m²*K

LAST Step Rounding Answer

∴

h ̅ = 0.7828W/m²*K

Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature Formula Elements

Variables

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

Prandtl Number at Film Temperature

Prandtl Number at Film Temperature is the ratio of momentum diffusivity to thermal diffusivity at the film temperature.

Symbol: P_f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Prandtl Number at Film Temperature

Reynolds Number for Mixing

Reynolds Number for Mixing is a dimensionless number, which represents the flow around the tips of the rotating impeller and ignores the factors affecting the circulating flow throughout the vessel.

Symbol: Re_m

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Reynolds Number for Mixing

Thermal Conductivity at Film Temperature

Thermal Conductivity at Film Temperature is the amount of heat flow per unit time through a unit area with a temperature gradient of one degree per unit distance.

Symbol: K_f

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

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity at Film Temperature

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

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}

Go Average Heat Transfer Coefficient for Laminar Film Condensation of Tube

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}

Go Average Heat Transfer Coefficient for Film Condensation on Plate for Wavy Laminar Flow

h ̅ = 1.13 \cdot {(\frac{ρ f \cdot (ρ f - ρ v) \cdot [g] \cdot h fg \cdot ({k f}^{3})}{L \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}})

Go Condensation Number for Vertical Plate

Co = 1.47 \cdot ({(Re f)}^{- \frac{1}{3}})

Go Condensation Number for Horizontal Cylinder

Co = 1.514 \cdot ({(Re f)}^{- \frac{1}{3}})

How to Evaluate Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature?

Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature evaluator uses Average Heat Transfer Coefficient = (0.026*(Prandtl Number at Film Temperature^(1/3))*(Reynolds Number for Mixing^(0.8))*(Thermal Conductivity at Film Temperature))/Diameter of Tube to evaluate the Average Heat Transfer Coefficient, The Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature formula is a function of Reynolds number, Prandtl number, diameter of tube and Thermal conductivity. Average Heat Transfer Coefficient is denoted by h ̅ symbol.

How to evaluate Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature using this online evaluator? To use this online evaluator for Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature, enter Prandtl Number at Film Temperature (P_f), Reynolds Number for Mixing (Re_m), Thermal Conductivity at Film Temperature (K_f) & Diameter of Tube (D_Tube) and hit the calculate button.

FAQs on Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature

What is the formula to find Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature?

The formula of Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature is expressed as Average Heat Transfer Coefficient = (0.026*(Prandtl Number at Film Temperature^(1/3))*(Reynolds Number for Mixing^(0.8))*(Thermal Conductivity at Film Temperature))/Diameter of Tube. Here is an example- 0.782819 = (0.026*(0.95^(1/3))*(2000^(0.8))*(0.68))/9.71.

How to calculate Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature?

With Prandtl Number at Film Temperature (P_f), Reynolds Number for Mixing (Re_m), Thermal Conductivity at Film Temperature (K_f) & Diameter of Tube (D_Tube) we can find Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature using the formula - Average Heat Transfer Coefficient = (0.026*(Prandtl Number at Film Temperature^(1/3))*(Reynolds Number for Mixing^(0.8))*(Thermal Conductivity at Film Temperature))/Diameter of Tube.

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=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)

Can the Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature be negative?

No, the Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature, measured in Heat Transfer Coefficient cannot be negative.

Which unit is used to measure Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature?

Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature 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 given Reynolds Number and Properties at Film Temperature can be measured.

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Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature 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 given Reynolds Number and Properties at Film Temperature Example

Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature Solution

Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature 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 given Reynolds Number and Properties at Film Temperature?

FAQs on Average Heat Transfer Coefficient given Reynolds Number and Properties at Film Temperature

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