Critical Radius of Insulation of a Sphere Calculator

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Chemical-Engineering	Heat Transfer ↺

✖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.ⓘ Thermal Conductivity [k]			+10% -10%
✖External convection heat transfer coefficient is the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat (i.e., the temperature difference, ΔT) in case of convective heat transferⓘ External convection heat transfer coefficient [h]			+10% -10%

✖Critical Radius of Insulation is the radius of insulation at which there is maximum heat transfer and increase or decrease in its value will lead to an overall decrease in heat transfer.ⓘ Critical Radius of Insulation of a Sphere [R_c]

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Critical Radius of Insulation of a Sphere

Ishan Gupta

Birla Institute of Technology & Science (BITS), Pilani

Ishan Gupta has created this Calculator and 50+ more calculators!

< 10 Other formulas that you can solve using the same Inputs

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Heat=(Thermal Conductivity*2*pi*(outer radius-inner radius)*Temperature Difference*length of cylinder)/((ln(outer radius/inner radius))*(outer radius-inner radius)) GO

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Heat transfer=((Thermal Conductivity*Cross sectional area*Perimeter*Heat transfer coefficient)^0.5)*(Base Temperature-Ambient Temperature) GO

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Stanton Number=External convection heat transfer coefficient/(Specific Heat Capacity*Fluid Velocity*Density) GO

Heat Transfer Through Plane Wall or Surface

Heat Rate=-Thermal Conductivity*Original cross sectional area*(Outside Temperature-Inside Temperature)/Width GO

Critical Radius of Insulation of a Cylinder

Critical Radius of Insulation=Thermal Conductivity/External convection heat transfer coefficient GO

One dimensional heat flux

Heat flux= -(Thermal Conductivity/Wall thickness)*(Temperature of wall 2-Temperature of wall 1) GO

Critical Thickness of Insulation for a Cylinder

Critical Thickness of Insulation=Thermal Conductivity/Heat transfer coefficient GO

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Prandtl number=Specific Heat Capacity*Dynamic viscosity/Thermal Conductivity GO

Thermal Diffusivity

Thermal Diffusivity=Thermal Conductivity/(Density*Specific Heat Capacity) GO

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Heat flux=Thermal Conductivity*(Temperature/Length) GO

< 1 Other formulas that calculate the same Output

Critical Radius of Insulation of a Cylinder

Critical Radius of Insulation=Thermal Conductivity/External convection heat transfer coefficient GO

Critical Radius of Insulation of a Sphere Formula

Critical Radius of Insulation=2*Thermal Conductivity/External convection heat transfer coefficient

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Critical Radius of Insulation of a Sphere

Critical Radius of Insulation of a Sphere is the radius of insulation at which there is maximum heat transfer and increase or decrease in its value will lead to an overall decrease in heat transfer.

How to Calculate Critical Radius of Insulation of a Sphere?

Critical Radius of Insulation of a Sphere calculator uses Critical Radius of Insulation=2*Thermal Conductivity/External convection heat transfer coefficient to calculate the Critical Radius of Insulation, Critical Radius of Insulation of a Sphere is the radius of insulation at which there is maximum heat transfer and increase or decrease in its value will lead to an overall decrease in heat transfer. Critical Radius of Insulation and is denoted by R_c symbol.

How to calculate Critical Radius of Insulation of a Sphere using this online calculator? To use this online calculator for Critical Radius of Insulation of a Sphere, enter Thermal Conductivity (k) and External convection heat transfer coefficient (h) and hit the calculate button. Here is how the Critical Radius of Insulation of a Sphere calculation can be explained with given input values -> 2 = 2*10/10.

FAQ

What is Critical Radius of Insulation of a Sphere?

Critical Radius of Insulation of a Sphere is the radius of insulation at which there is maximum heat transfer and increase or decrease in its value will lead to an overall decrease in heat transfer and is represented as R_c=2*k/h or Critical Radius of Insulation=2*Thermal Conductivity/External convection heat transfer coefficient. 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 and External convection heat transfer coefficient is the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat (i.e., the temperature difference, ΔT) in case of convective heat transfer.

How to calculate Critical Radius of Insulation of a Sphere?

Critical Radius of Insulation of a Sphere is the radius of insulation at which there is maximum heat transfer and increase or decrease in its value will lead to an overall decrease in heat transfer is calculated using Critical Radius of Insulation=2*Thermal Conductivity/External convection heat transfer coefficient. To calculate Critical Radius of Insulation of a Sphere, you need Thermal Conductivity (k) and External convection heat transfer coefficient (h). With our tool, you need to enter the respective value for Thermal Conductivity and External convection heat transfer coefficient 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 Critical Radius of Insulation?

In this formula, Critical Radius of Insulation uses Thermal Conductivity and External convection heat transfer coefficient. We can use 1 other way(s) to calculate the same, which is/are as follows -

Critical Radius of Insulation=Thermal Conductivity/External convection heat transfer coefficient

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