Total thermal resistance of a spherical wall with convection on either side Calculator

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✖Radius1 is the distance from the centre of the concentric circles to any point on the first/smallest concentric circle or the radius of the first circle.ⓘ radius1 [r1]			+10% -10%
✖inside convection heat transfer coefficient is the coefficient of convection heat transfer at the inside surface of the body or object or wall, etc.ⓘ inside convection heat transfer coefficient [h1]			+10% -10%
✖radius2 is the radius of the second concentric circle or circle.ⓘ radius2 [r2]			+10% -10%
✖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%

✖Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Thermal resistance is the reciprocal of thermal conductance. thermal resistance R in kelvins per watt is a property of a particular component.ⓘ Total thermal resistance of a spherical wall with convection on either side [R _th]

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Total thermal resistance of a spherical wall with convection on either side

Sai Venkata Phanindra Chary Arendra

Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad

Sai Venkata Phanindra Chary Arendra has created this Calculator and 50+ more calculators!

Maiarutselvan V

PSG College of Technology (PSGCT), Coimbatore

Maiarutselvan V has verified this Calculator and 200+ more calculators!

< 11 Other formulas that you can solve using the same Inputs

Radial Heat flowing through a cylinder

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

Heat Transfer by Conduction at Base

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

Stanton Number (using basic fluid properties)

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 Sphere

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

Prandtl Number

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

Thermal Diffusivity

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

Heat flux

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

< 11 Other formulas that calculate the same Output

Total thermal resistance of 2 cylindrical resistances connected in series.

Thermal resistance=((ln(radius2/radius1))/(2*pi*thermal conductivity 1*length of cylinder))+((ln(radius 3/radius2))/(2*pi*thermal conductivity 2*length of cylinder)) GO

Thermal resistance of a composite wall with 3 layers in series

Thermal resistance=(length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area))+(length 3/(thermal conductivity 3*Area)) GO

Thermal resistance for conduction through 2 resistances in parallel

Thermal resistance=(Length)/((thermal conductivity 1*Cross Sectional area 1)+(thermal conductivity 2*Cross-Sectional area at a point 2)) GO

Total thermal resistance for conduction through two resistances in parallel

Thermal resistance=(thermal resistance 1*thermal resistance 2)/(thermal resistance 1+thermal resistance 2) GO

Thermal resistance of a composite wall with 2 layers in series

Thermal resistance=(length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area)) GO

Thermal resistance for radial heat conduction offered by a cylinder wall

Thermal resistance=ln(Outer Radius/Inner Radius)/(2*pi*Thermal Conductivity*length of cylinder) GO

Total thermal resistance for conduction through three resistances in series

Thermal resistance=thermal resistance 1+thermal resistance 2+thermal resistance 3 GO

Thermal Resistance of a wall

Thermal resistance=Length/(Thermal Conductivity*Cross sectional area) GO

Total thermal resistance for conduction through two resistances in series

Thermal resistance=thermal resistance 1+thermal resistance 2 GO

Total thermal resistance for conduction through two resistances in series

Thermal resistance=thermal resistance 1+thermal resistance 2 GO

Thermal resistance in convection heat transfer

Thermal resistance=1/(Area*Heat transfer coefficient) GO

Total thermal resistance of a spherical wall with convection on either side Formula

Thermal resistance=(1/(4*pi*(radius1^2)*inside convection heat transfer coefficient))+((radius2-radius1)/(4*pi*radius1*radius2*Thermal Conductivity))+(1/(4*pi*(radius2^2)*External convection heat transfer coefficient))
R <sub>th=(1/(4*pi*(r1^2)*h1))+((r2-r1)/(4*pi*r1*r2*k))+(1/(4*pi*(r2^2)*h))

More formulas

Thermal resistance of a spherical wall GO

Heat flow rate through a spherical wall GO

Convection resistance for a spherical layer GO

Total thermal resistance of a spherical wall of 2 layers without convection GO

Total thermal resistance of a spherical wall of 3 layers without convection GO

Heat flow rate through a spherical composite wall of 2 layers in series GO

Thermal resistance of a spherical composite wall of 2 layers in series with convection GO

Outer surface temperature of a spherical wall GO

Inner surface temperature of a spherical wall GO

Thickness of the spherical wall to maintain given temperature difference GO

What is a spherical wall?

A spherical wall is a hollow sphere, i.e. what is left of a sphere with radius r2, when a sphere with radius r1 has been removed from it, the two spheres having the same centre and r1 < r2.

How to Calculate Total thermal resistance of a spherical wall with convection on either side?

Total thermal resistance of a spherical wall with convection on either side calculator uses Thermal resistance=(1/(4*pi*(radius1^2)*inside convection heat transfer coefficient))+((radius2-radius1)/(4*pi*radius1*radius2*Thermal Conductivity))+(1/(4*pi*(radius2^2)*External convection heat transfer coefficient)) to calculate the Thermal resistance, The total thermal resistance of a spherical wall with convection on either side formula is the sum of the resistances due to convection on either side and conduction through the spherical wall. Thermal resistance and is denoted by R _th symbol.

How to calculate Total thermal resistance of a spherical wall with convection on either side using this online calculator? To use this online calculator for Total thermal resistance of a spherical wall with convection on either side, enter radius1 (r1), inside convection heat transfer coefficient (h1), radius2 (r2), Thermal Conductivity (k) and External convection heat transfer coefficient (h) and hit the calculate button. Here is how the Total thermal resistance of a spherical wall with convection on either side calculation can be explained with given input values -> 0.087535 = (1/(4*pi*(1^2)*1))+((1-1)/(4*pi*1*1*10))+(1/(4*pi*(1^2)*10)).

FAQ

What is Total thermal resistance of a spherical wall with convection on either side?

The total thermal resistance of a spherical wall with convection on either side formula is the sum of the resistances due to convection on either side and conduction through the spherical wall and is represented as R _{th=(1/(4*pi*(r1^2)*h1))+((r2-r1)/(4*pi*r1*r2*k))+(1/(4*pi*(r2^2)*h))} or Thermal resistance=(1/(4*pi*(radius1^2)*inside convection heat transfer coefficient))+((radius2-radius1)/(4*pi*radius1*radius2*Thermal Conductivity))+(1/(4*pi*(radius2^2)*External convection heat transfer coefficient)). Radius1 is the distance from the centre of the concentric circles to any point on the first/smallest concentric circle or the radius of the first circle, inside convection heat transfer coefficient is the coefficient of convection heat transfer at the inside surface of the body or object or wall, etc, radius2 is the radius of the second concentric circle or circle, 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 Total thermal resistance of a spherical wall with convection on either side?

The total thermal resistance of a spherical wall with convection on either side formula is the sum of the resistances due to convection on either side and conduction through the spherical wall is calculated using Thermal resistance=(1/(4*pi*(radius1^2)*inside convection heat transfer coefficient))+((radius2-radius1)/(4*pi*radius1*radius2*Thermal Conductivity))+(1/(4*pi*(radius2^2)*External convection heat transfer coefficient)). To calculate Total thermal resistance of a spherical wall with convection on either side, you need radius1 (r1), inside convection heat transfer coefficient (h1), radius2 (r2), Thermal Conductivity (k) and External convection heat transfer coefficient (h). With our tool, you need to enter the respective value for radius1, inside convection heat transfer coefficient, radius2, 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 Thermal resistance?

In this formula, Thermal resistance uses radius1, inside convection heat transfer coefficient, radius2, Thermal Conductivity and External convection heat transfer coefficient. We can use 11 other way(s) to calculate the same, which is/are as follows -

Thermal resistance=1/(Area*Heat transfer coefficient)
Thermal resistance=Length/(Thermal Conductivity*Cross sectional area)
Thermal resistance=(length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area))
Thermal resistance=(length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area))+(length 3/(thermal conductivity 3*Area))
Thermal resistance=thermal resistance 1+thermal resistance 2+thermal resistance 3
Thermal resistance=thermal resistance 1+thermal resistance 2
Thermal resistance=thermal resistance 1+thermal resistance 2
Thermal resistance=(thermal resistance 1*thermal resistance 2)/(thermal resistance 1+thermal resistance 2)
Thermal resistance=(Length)/((thermal conductivity 1*Cross Sectional area 1)+(thermal conductivity 2*Cross-Sectional area at a point 2))
Thermal resistance=ln(Outer Radius/Inner Radius)/(2*pi*Thermal Conductivity*length of cylinder)
Thermal resistance=((ln(radius2/radius1))/(2*pi*thermal conductivity 1*length of cylinder))+((ln(radius 3/radius2))/(2*pi*thermal conductivity 2*length of cylinder))

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