Convection Resistance for Spherical Layer Calculator

✖Radius Of Sphere is the distance from the center of the concentric circles to any point on the first sphere.ⓘ Radius of Sphere [r]			+10% -10%
✖Convection Heat Transfer Coefficient is the rate of heat transfer between a solid surface and a fluid per unit surface area per unit temperature.ⓘ Convection Heat Transfer Coefficient [h]			+10% -10%

✖Thermal resistance of sphere without convection is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow.ⓘ Convection Resistance for Spherical Layer [r_th]

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Convection Resistance for Spherical Layer Solution

STEP 0: Pre-Calculation Summary

Formula Used

Thermal Resistance of Sphere Without Convection = 1/(4*pi*Radius of Sphere^2*Convection Heat Transfer Coefficient)
r_th = 1/(4*pi*r^2*h)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Thermal Resistance of Sphere Without Convection - (Measured in Kelvin per Watt) - Thermal resistance of sphere without convection is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow.
Radius of Sphere - (Measured in Meter) - Radius Of Sphere is the distance from the center of the concentric circles to any point on the first sphere.
Convection Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Convection Heat Transfer Coefficient is the rate of heat transfer between a solid surface and a fluid per unit surface area per unit temperature.

STEP 1: Convert Input(s) to Base Unit

Radius of Sphere: 1.4142 Meter --> 1.4142 Meter No Conversion Required
Convection Heat Transfer Coefficient: 30 Watt per Square Meter per Kelvin --> 30 Watt per Square Meter per Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

r_th = 1/(4*pi*r^2*h) --> 1/(4*pi*1.4142^2*30)

Evaluating ... ...

r_th = 0.00132631663118545

STEP 3: Convert Result to Output's Unit

0.00132631663118545 Kelvin per Watt --> No Conversion Required

FINAL ANSWER

0.00132631663118545 ≈ 0.001326 Kelvin per Watt <-- Thermal Resistance of Sphere Without Convection

(Calculation completed in 00.004 seconds)

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Created by Sai Venkata Phanindra Chary Arendra

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

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< Conduction in Sphere Calculators

Total Thermal Resistance of Spherical wall of 3 Layers without Convection

LaTeX Go Sphere Thermal Resistance = (Radius of 2nd Concentric Sphere-Radius of 1st Concentric Sphere)/(4*pi*Thermal Conductivity of 1st Body*Radius of 1st Concentric Sphere*Radius of 2nd Concentric Sphere)+(Radius of 3rd Concentric Sphere-Radius of 2nd Concentric Sphere)/(4*pi*Thermal Conductivity of 2nd Body*Radius of 2nd Concentric Sphere*Radius of 3rd Concentric Sphere)+(Radius of 4th Concentric Sphere-Radius of 3rd Concentric Sphere)/(4*pi*Thermal Conductivity of 3rd Body*Radius of 3rd Concentric Sphere*Radius of 4th Concentric Sphere)

Total Thermal Resistance of Spherical Wall of 2 Layers without Convection

LaTeX Go Sphere Thermal Resistance Without Convection = (Radius of 2nd Concentric Sphere-Radius of 1st Concentric Sphere)/(4*pi*Thermal Conductivity of 1st Body*Radius of 1st Concentric Sphere*Radius of 2nd Concentric Sphere)+(Radius of 3rd Concentric Sphere-Radius of 2nd Concentric Sphere)/(4*pi*Thermal Conductivity of 2nd Body*Radius of 2nd Concentric Sphere*Radius of 3rd Concentric Sphere)

Total Thermal Resistance of Spherical Wall with Convection on Both Side

LaTeX Go Sphere Thermal Resistance = 1/(4*pi*Radius of 1st Concentric Sphere^2*Inner Convection Heat Transfer Coefficient)+(Radius of 2nd Concentric Sphere-Radius of 1st Concentric Sphere)/(4*pi*Thermal Conductivity*Radius of 1st Concentric Sphere*Radius of 2nd Concentric Sphere)+1/(4*pi*Radius of 2nd Concentric Sphere^2*External Convection Heat Transfer Coefficient)

Convection Resistance for Spherical Layer

LaTeX Go Thermal Resistance of Sphere Without Convection = 1/(4*pi*Radius of Sphere^2*Convection Heat Transfer Coefficient)

Convection Resistance for Spherical Layer Formula

LaTeX Go

Thermal Resistance of Sphere Without Convection = 1/(4*pi*Radius of Sphere^2*Convection Heat Transfer Coefficient)
r_th = 1/(4*pi*r^2*h)

What is convection?

Convective heat transfer often referred to simply as convection, is the transfer of heat from one place to another by the movement of fluids. Convection is usually the dominant form of heat transfer in liquids and gases.

How to Calculate Convection Resistance for Spherical Layer?

Convection Resistance for Spherical Layer calculator uses Thermal Resistance of Sphere Without Convection = 1/(4*pi*Radius of Sphere^2*Convection Heat Transfer Coefficient) to calculate the Thermal Resistance of Sphere Without Convection, Convection Resistance for Spherical Layer formula is the thermal resistance offered by a spherical surface layer for heat convection by neglecting the convection. Thermal Resistance of Sphere Without Convection is denoted by r_th symbol.

How to calculate Convection Resistance for Spherical Layer using this online calculator? To use this online calculator for Convection Resistance for Spherical Layer, enter Radius of Sphere (r) & Convection Heat Transfer Coefficient (h) and hit the calculate button. Here is how the Convection Resistance for Spherical Layer calculation can be explained with given input values -> 0.001326 = 1/(4*pi*1.4142^2*30).

FAQ

What is Convection Resistance for Spherical Layer?

Convection Resistance for Spherical Layer formula is the thermal resistance offered by a spherical surface layer for heat convection by neglecting the convection and is represented as r_th = 1/(4*pi*r^2*h) or Thermal Resistance of Sphere Without Convection = 1/(4*pi*Radius of Sphere^2*Convection Heat Transfer Coefficient). Radius Of Sphere is the distance from the center of the concentric circles to any point on the first sphere & Convection Heat Transfer Coefficient is the rate of heat transfer between a solid surface and a fluid per unit surface area per unit temperature.

How to calculate Convection Resistance for Spherical Layer?

Convection Resistance for Spherical Layer formula is the thermal resistance offered by a spherical surface layer for heat convection by neglecting the convection is calculated using Thermal Resistance of Sphere Without Convection = 1/(4*pi*Radius of Sphere^2*Convection Heat Transfer Coefficient). To calculate Convection Resistance for Spherical Layer, you need Radius of Sphere (r) & Convection Heat Transfer Coefficient (h). With our tool, you need to enter the respective value for Radius of Sphere & 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 of Sphere Without Convection?

In this formula, Thermal Resistance of Sphere Without Convection uses Radius of Sphere & Convection Heat Transfer Coefficient. We can use 1 other way(s) to calculate the same, which is/are as follows -

Thermal Resistance of Sphere Without Convection = (Radius of 2nd Concentric Sphere-Radius of 1st Concentric Sphere)/(4*pi*Thermal Conductivity*Radius of 1st Concentric Sphere*Radius of 2nd Concentric Sphere)

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