Thermal Resistance for Pipe in Square Section Calculator

✖Length is the measurement or extent of something from end to end.ⓘ Length [L]			+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 [h_i]			+10% -10%
✖The Cylinder Radius is the radius of its base.ⓘ Cylinder Radius [R]			+10% -10%
✖Thermal Conductivity is rate of heat passes through specified material, expressed as amount of heat flows per unit time through a unit area with a temperature gradient of one degree per unit distance.ⓘ Thermal Conductivity [k]			+10% -10%
✖Side of square is defined as the length of the sides of the square. In the square all four sides are equal and all four angles are 90 degrees.ⓘ Side of Square [a]			+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 in case of convective heat transfer.ⓘ External Convection [h_o]			+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 for Pipe in Square Section [R_th]

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Conduction Formula PDF PDF Image

Thermal Resistance for Pipe in Square Section Solution

STEP 0: Pre-Calculation Summary

Formula Used

Thermal Resistance = (1/(2*pi*Length))*((1/(Inside Convection*Cylinder Radius))+((Length/Thermal Conductivity)*ln((1.08*Side of Square)/(2*Cylinder Radius)))+(pi/(2*External Convection*Side of Square)))
R_th = (1/(2*pi*L))*((1/(h_i*R))+((L/k)*ln((1.08*a)/(2*R)))+(pi/(2*h_o*a)))
This formula uses 1 Constants, 1 Functions, 7 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Functions Used

ln - The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function., ln(Number)

Variables Used

Thermal Resistance - (Measured in Kelvin per Watt) - Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow.
Length - (Measured in Meter) - Length is the measurement or extent of something from end to end.
Inside Convection - (Measured in Watt per Square Meter per Kelvin) - Inside Convection Heat Transfer Coefficient is the coefficient of convection heat transfer at the inside surface of the body or object or wall, etc.
Cylinder Radius - (Measured in Meter) - The Cylinder Radius is the radius of its base.
Thermal Conductivity - (Measured in Watt per Meter per K) - Thermal Conductivity is rate of heat passes through specified material, expressed as amount of heat flows per unit time through a unit area with a temperature gradient of one degree per unit distance.
Side of Square - (Measured in Meter) - Side of square is defined as the length of the sides of the square. In the square all four sides are equal and all four angles are 90 degrees.
External Convection - (Measured in Watt per Square Meter per Kelvin) - External Convection Heat Transfer Coefficient is the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat in case of convective heat transfer.

STEP 1: Convert Input(s) to Base Unit

Length: 3 Meter --> 3 Meter No Conversion Required
Inside Convection: 12 Watt per Square Meter per Kelvin --> 12 Watt per Square Meter per Kelvin No Conversion Required
Cylinder Radius: 1.5 Meter --> 1.5 Meter No Conversion Required
Thermal Conductivity: 10 Watt per Meter per K --> 10 Watt per Meter per K No Conversion Required
Side of Square: 8 Meter --> 8 Meter No Conversion Required
External Convection: 9 Watt per Square Meter per Kelvin --> 9 Watt per Square Meter per Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_th = (1/(2*pi*L))*((1/(h_i*R))+((L/k)*ln((1.08*a)/(2*R)))+(pi/(2*h_o*a))) --> (1/(2*pi*3))*((1/(12*1.5))+((3/10)*ln((1.08*8)/(2*1.5)))+(pi/(2*9*8)))

Evaluating ... ...

R_th = 0.0209399765751945

STEP 3: Convert Result to Output's Unit

0.0209399765751945 Kelvin per Watt --> No Conversion Required

FINAL ANSWER

0.0209399765751945 ≈ 0.02094 Kelvin per Watt <-- Thermal Resistance

(Calculation completed in 00.004 seconds)

You are here -

Home » Physics » Heat and Mass Transfer » Conduction » Mechanical » Other shapes » Thermal Resistance for Pipe in Square Section

Credits

Created by 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 100+ more calculators!

Verified by Rajat Vishwakarma

University Institute of Technology RGPV (UIT - RGPV), Bhopal

Rajat Vishwakarma has verified this Calculator and 400+ more calculators!

< Other shapes Calculators

Heat flow rate through pipe with eccentric lagging

LaTeX Go Eccentric Lagging Heat Flow Rate = (Eccentric Lagging Inner Surface Temperature-Eccentric Lagging Outer Surface Temperature)/((1/(2*pi*Eccentric Lagging Thermal Conductivity*Eccentric Lagging Length))*(ln((sqrt(((Radius 2+Radius 1)^2)-Distance Between Centers of Eccentric Circles^2)+sqrt(((Radius 2-Radius 1)^2)-Distance Between Centers of Eccentric Circles^2))/(sqrt(((Radius 2+Radius 1)^2)-Distance Between Centers of Eccentric Circles^2)-sqrt(((Radius 2-Radius 1)^2)-Distance Between Centers of Eccentric Circles^2)))))

Thermal resistance of pipe with eccentric lagging

LaTeX Go Eccentric Lagging Thermal Resistance = (1/(2*pi*Eccentric Lagging Thermal Conductivity*Eccentric Lagging Length))*(ln((sqrt(((Radius 2+Radius 1)^2)-Distance Between Centers of Eccentric Circles^2)+sqrt(((Radius 2-Radius 1)^2)-Distance Between Centers of Eccentric Circles^2))/(sqrt(((Radius 2+Radius 1)^2)-Distance Between Centers of Eccentric Circles^2)-sqrt(((Radius 2-Radius 1)^2)-Distance Between Centers of Eccentric Circles^2))))

Heat flow through pipe in square section

LaTeX Go Heat Flow Rate = (Inner Surface Temperature-Outer Surface Temperature)/((1/(2*pi*Length))*((1/(Inside Convection*Cylinder Radius))+((Length/Thermal Conductivity)*ln((1.08*Side of Square)/(2*Cylinder Radius)))+(pi/(2*External Convection*Side of Square))))

Thermal Resistance for Pipe in Square Section

LaTeX Go Thermal Resistance = (1/(2*pi*Length))*((1/(Inside Convection*Cylinder Radius))+((Length/Thermal Conductivity)*ln((1.08*Side of Square)/(2*Cylinder Radius)))+(pi/(2*External Convection*Side of Square)))

Thermal Resistance for Pipe in Square Section Formula

LaTeX Go

What is thermal resistance?

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.

How to Calculate Thermal Resistance for Pipe in Square Section?

Thermal Resistance for Pipe in Square Section calculator uses Thermal Resistance = (1/(2*pi*Length))*((1/(Inside Convection*Cylinder Radius))+((Length/Thermal Conductivity)*ln((1.08*Side of Square)/(2*Cylinder Radius)))+(pi/(2*External Convection*Side of Square))) to calculate the Thermal Resistance, The Thermal Resistance for Pipe in Square Section formula is defined as the total thermal resistance offered by a section with a pipe in the square for heat transfer, with convection on either side. Thermal Resistance is denoted by R_th symbol.

How to calculate Thermal Resistance for Pipe in Square Section using this online calculator? To use this online calculator for Thermal Resistance for Pipe in Square Section, enter Length (L), Inside Convection (h_i), Cylinder Radius (R), Thermal Conductivity (k), Side of Square (a) & External Convection (h_o) and hit the calculate button. Here is how the Thermal Resistance for Pipe in Square Section calculation can be explained with given input values -> 0.02094 = (1/(2*pi*3))*((1/(12*1.5))+((3/10)*ln((1.08*8)/(2*1.5)))+(pi/(2*9*8))).

FAQ

What is Thermal Resistance for Pipe in Square Section?

The Thermal Resistance for Pipe in Square Section formula is defined as the total thermal resistance offered by a section with a pipe in the square for heat transfer, with convection on either side and is represented as R_th = (1/(2*pi*L))*((1/(h_i*R))+((L/k)*ln((1.08*a)/(2*R)))+(pi/(2*h_o*a))) or Thermal Resistance = (1/(2*pi*Length))*((1/(Inside Convection*Cylinder Radius))+((Length/Thermal Conductivity)*ln((1.08*Side of Square)/(2*Cylinder Radius)))+(pi/(2*External Convection*Side of Square))). Length is the measurement or extent of something from end to end, Inside Convection Heat Transfer Coefficient is the coefficient of convection heat transfer at the inside surface of the body or object or wall, etc, The Cylinder Radius is the radius of its base, Thermal Conductivity is rate of heat passes through specified material, expressed as amount of heat flows per unit time through a unit area with a temperature gradient of one degree per unit distance, Side of square is defined as the length of the sides of the square. In the square all four sides are equal and all four angles are 90 degrees & External Convection Heat Transfer Coefficient is the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat in case of convective heat transfer.

How to calculate Thermal Resistance for Pipe in Square Section?

The Thermal Resistance for Pipe in Square Section formula is defined as the total thermal resistance offered by a section with a pipe in the square for heat transfer, with convection on either side is calculated using Thermal Resistance = (1/(2*pi*Length))*((1/(Inside Convection*Cylinder Radius))+((Length/Thermal Conductivity)*ln((1.08*Side of Square)/(2*Cylinder Radius)))+(pi/(2*External Convection*Side of Square))). To calculate Thermal Resistance for Pipe in Square Section, you need Length (L), Inside Convection (h_i), Cylinder Radius (R), Thermal Conductivity (k), Side of Square (a) & External Convection (h_o). With our tool, you need to enter the respective value for Length, Inside Convection, Cylinder Radius, Thermal Conductivity, Side of Square & External Convection and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search