Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film Calculator

✖The area is the amount of two-dimensional space taken up by an object.ⓘ Area [A]			+10% -10%
✖Local Heat Transfer Resistance is the ratio of the temperature difference, dT, to the heat transfer Q. This is analogous to Ohm's law.ⓘ Local Heat Transfer Resistance [HT_Resistance]			+10% -10%

✖The Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus area is included in the equation as it represents the area over which the transfer of heat takes place.ⓘ Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film [h_ht]

⎘ Copy

👎

Formula

✖

Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film

Formula

`"h"_{"ht"} = 1/(("A")*"HT"_{"Resistance"})`

Example

`"1.500375W/m²*K"=1/(("0.05m²")*"13.33K/W")`

Calculator

LaTeX

Reset

👍

Download Basics of Heat Transfer Formulas PDF PDF Image

Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance)
h_ht = 1/((A)*HT_Resistance)
This formula uses 3 Variables

Variables Used

Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - The Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus area is included in the equation as it represents the area over which the transfer of heat takes place.
Area - (Measured in Square Meter) - The area is the amount of two-dimensional space taken up by an object.
Local Heat Transfer Resistance - (Measured in Kelvin per Watt) - Local Heat Transfer Resistance is the ratio of the temperature difference, dT, to the heat transfer Q. This is analogous to Ohm's law.

STEP 1: Convert Input(s) to Base Unit

Area: 0.05 Square Meter --> 0.05 Square Meter No Conversion Required
Local Heat Transfer Resistance: 13.33 Kelvin per Watt --> 13.33 Kelvin per Watt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

h_ht = 1/((A)*HT_Resistance) --> 1/((0.05)*13.33)

Evaluating ... ...

h_ht = 1.50037509377344

STEP 3: Convert Result to Output's Unit

1.50037509377344 Watt per Square Meter per Kelvin --> No Conversion Required

FINAL ANSWER

1.50037509377344 ≈ 1.500375 Watt per Square Meter per Kelvin <-- Heat Transfer Coefficient

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Chemical Engineering » Heat Transfer » Basics of Heat Transfer » Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film

Credits

Created by Ayush gupta

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

Ayush gupta has created this Calculator and 300+ more calculators!

Verified by Prerana Bakli

University of Hawaiʻi at Mānoa (UH Manoa), Hawaii, USA

Prerana Bakli has verified this Calculator and 1600+ more calculators!

< 17 Basics of Heat Transfer Calculators

Log Mean Temperature Difference for Counter Current Flow

Go Log Mean Temperature Difference = ((Outlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)-(Inlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid))/ln((Outlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)/(Inlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid))

Log Mean Temperature Difference for CoCurrent Flow

Go Log Mean Temperature Difference = ((Outlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid)-(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid))/ln((Outlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid)/(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid))

Logarithmic Mean Area of Cylinder

Go Logarithmic Mean Area = (Outer Area of Cylinder-Inner Area of Cylinder)/ln(Outer Area of Cylinder/Inner Area of Cylinder)

Equivalent Diameter when Flow in Rectangular Duct

Go Equivalent Diameter = (4*Length of Rectangular Section*Breadth of Rectangle)/(2*(Length of Rectangular Section+Breadth of Rectangle))

Internal Diameter of Pipe given Heat Transfer Coefficient for Gas in Turbulent Motion

Go Internal Diameter of Pipe = ((16.6*Specific Heat Capacity*(Mass Velocity)^0.8)/(Heat Transfer Coefficient for Gas))^(1/0.2)

Heat Transfer from Stream of Gas flowing in Turbulent Motion

Go Heat Transfer Coefficient = (16.6*Specific Heat Capacity*(Mass Velocity)^0.8)/(Internal Diameter of Pipe^0.2)

Colburn Factor using Chilton Colburn Analogy

Go Colburn's j-factor = Nusselt Number/((Reynolds Number)*(Prandtl Number)^(1/3))

Heat Transfer Coefficient based on Temperature Difference

Go Heat Transfer Coefficient = Heat Transfer/Overall Temperature Difference

Equivalent Diameter of Non-Circular Duct

Go Equivalent Diameter = (4*Cross Sectional Area of Flow)/Wetted Perimeter

Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film

Go Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance)

Local Heat Transfer Resistance of Air-Film

Go Local Heat Transfer Resistance = 1/(Heat Transfer Coefficient*Area)

Wetted Perimeter given Hydraulic Radius

Go Wetted Perimeter = Cross Sectional Area of Flow/Hydraulic Radius

Hydraulic Radius

Go Hydraulic Radius = Cross Sectional Area of Flow/Wetted Perimeter

Reynolds Number given Colburn Factor

Go Reynolds Number = (Colburn's j-factor/0.023)^((-1)/0.2)

J-Factor for Pipe Flow

Go Colburn's j-factor = 0.023*(Reynolds Number)^(-0.2)

Colburn J-Factor given Fanning Friction Factor

Go Colburn's j-factor = Fanning Friction Factor/2

Fanning Friction Factor given Colburn J-Factor

Go Fanning Friction Factor = 2*Colburn's j-factor

Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film Formula

Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance)
h_ht = 1/((A)*HT_Resistance)

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 Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film?

Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film calculator uses Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance) to calculate the Heat Transfer Coefficient, The Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film formula is defined as inverse of the product of area of heat transfer and local heat transfer resistance. The convective heat transfer coefficient depends on the fluid’s physical properties and the physical situation. The convective heat transfer coefficient is not a property of the fluid. It is an experimentally determined parameter whose value depends on all the variables influencing convection, such as the surface geometry, the nature of fluid motion, the properties of the fluid, and the bulk fluid velocity. Typically, the convective heat transfer coefficient for laminar flow is relatively low compared to the convective heat transfer coefficient for turbulent flow. This is due to turbulent flow having a thinner stagnant fluid film layer on the heat transfer surface. Heat Transfer Coefficient is denoted by h_ht symbol.

How to calculate Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film using this online calculator? To use this online calculator for Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film, enter Area (A) & Local Heat Transfer Resistance (HT_Resistance) and hit the calculate button. Here is how the Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film calculation can be explained with given input values -> 0.921659 = 1/((0.05)*13.33).

FAQ

What is Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film?

The Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film formula is defined as inverse of the product of area of heat transfer and local heat transfer resistance. The convective heat transfer coefficient depends on the fluid’s physical properties and the physical situation. The convective heat transfer coefficient is not a property of the fluid. It is an experimentally determined parameter whose value depends on all the variables influencing convection, such as the surface geometry, the nature of fluid motion, the properties of the fluid, and the bulk fluid velocity. Typically, the convective heat transfer coefficient for laminar flow is relatively low compared to the convective heat transfer coefficient for turbulent flow. This is due to turbulent flow having a thinner stagnant fluid film layer on the heat transfer surface and is represented as h_ht = 1/((A)*HT_Resistance) or Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance). The area is the amount of two-dimensional space taken up by an object & Local Heat Transfer Resistance is the ratio of the temperature difference, dT, to the heat transfer Q. This is analogous to Ohm's law.

How to calculate Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film?

The Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film formula is defined as inverse of the product of area of heat transfer and local heat transfer resistance. The convective heat transfer coefficient depends on the fluid’s physical properties and the physical situation. The convective heat transfer coefficient is not a property of the fluid. It is an experimentally determined parameter whose value depends on all the variables influencing convection, such as the surface geometry, the nature of fluid motion, the properties of the fluid, and the bulk fluid velocity. Typically, the convective heat transfer coefficient for laminar flow is relatively low compared to the convective heat transfer coefficient for turbulent flow. This is due to turbulent flow having a thinner stagnant fluid film layer on the heat transfer surface is calculated using Heat Transfer Coefficient = 1/((Area)*Local Heat Transfer Resistance). To calculate Heat Transfer Coefficient given Local Heat Transfer Resistance of Air Film, you need Area (A) & Local Heat Transfer Resistance (HT_Resistance). With our tool, you need to enter the respective value for Area & Local Heat Transfer Resistance 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 Heat Transfer Coefficient?

In this formula, Heat Transfer Coefficient uses Area & Local Heat Transfer Resistance. We can use 2 other way(s) to calculate the same, which is/are as follows -

Heat Transfer Coefficient = Heat Transfer/Overall Temperature Difference
Heat Transfer Coefficient = (16.6*Specific Heat Capacity*(Mass Velocity)^0.8)/(Internal Diameter of Pipe^0.2)

Home

FREE PDFs

🔍 Search