Heat Flux Calculator

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✖Thermal Conductivity of Fin is rate of heat passes through Fin, 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 of Fin [k_fin]			+10% -10%
✖Temperature of Conductor is the degree or intensity of heat present in a heat conductor.ⓘ Temperature of Conductor [T]			+10% -10%
✖Length of Conductor is the measure of length of wire.ⓘ Length of Conductor [l]			+10% -10%

✖Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q".ⓘ Heat Flux [q']

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Formula

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Heat Flux

Formula

`"q'" = "k"_{"fin"}*("T"/"l")`

Example

`"78.66364W/m²"="10.18W/(m*K)"*("85K"/"11m")`

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Heat Flux Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor)
q' = k_fin*(T/l)
This formula uses 4 Variables

Variables Used

Heat Flux - (Measured in Watt per Square Meter) - Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q".
Thermal Conductivity of Fin - (Measured in Watt per Meter per K) - Thermal Conductivity of Fin is rate of heat passes through Fin, expressed as amount of heat flows per unit time through a unit area with a temperature gradient of one degree per unit distance.
Temperature of Conductor - (Measured in Kelvin) - Temperature of Conductor is the degree or intensity of heat present in a heat conductor.
Length of Conductor - (Measured in Meter) - Length of Conductor is the measure of length of wire.

STEP 1: Convert Input(s) to Base Unit

Thermal Conductivity of Fin: 10.18 Watt per Meter per K --> 10.18 Watt per Meter per K No Conversion Required
Temperature of Conductor: 85 Kelvin --> 85 Kelvin No Conversion Required
Length of Conductor: 11 Meter --> 11 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

q' = k_fin*(T/l) --> 10.18*(85/11)

Evaluating ... ...

q' = 78.6636363636364

STEP 3: Convert Result to Output's Unit

78.6636363636364 Watt per Square Meter --> No Conversion Required

FINAL ANSWER

78.6636363636364 Watt per Square Meter <-- Heat Flux

(Calculation completed in 00.016 seconds)

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Created by Kethavath Srinath

Osmania University (OU), Hyderabad

Kethavath Srinath has created this Calculator and 1000+ more calculators!

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< 5 Basics of HMT Calculators

Total Thermal Resistance for Conduction through Two Resistances in Parallel

Go Thermal Resistance = (Thermal Resistance 1*Thermal Resistance 2)/(Thermal Resistance 1+Thermal Resistance 2)

Heat Flux

Go Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor)

Total Thermal Resistance for Conduction through Three Resistances in Series

Go Thermal Resistance = Thermal Resistance 1+Thermal Resistance 2+Thermal Resistance 3

Total Thermal Resistance for Conduction through Two Resistances in Series

Go Thermal Resistance = Thermal Resistance 1+Thermal Resistance 2

Thermal Conductance for given Thermal Resistance

Go Thermal Conductance = 1/Thermal Resistance

< 5 Heat Transfer Parameters Calculators

Absolute humidity of air at initial air temperature

Go Absolute Humidity of Air(tg) = (((Liquid Phase Heat Transfer Coefficient*(Inside Temperature-Liquid layer temperature))-Gas Phase Heat Transfer Coefficient*(Bulk Gas Temperature-Inside Temperature))/(Gas Phase Mass Transfer Coefficient*Enthalpy of Evaporation))+Absolute Humidity (ti)

Biot Number using Characteristic Length

Go Biot Number = (Heat Transfer Coefficient*Characteristic Length)/(Thermal Conductivity of Fin)

Heat Flux

Go Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor)

Diameter of Rod Circular Fin given area of cross-section

Go Diameter = sqrt((Cross-Sectional Area*4)/pi)

Characteristic length for lumped system

Go Characteristic Length = (Volume)/(Area)

Heat Flux Formula

Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor)
q' = k_fin*(T/l)

What is heat flux?

Heat flux or thermal flux, sometimes also referred to as heat flux density, heat-flow density or heat flow rate intensity is a flow of energy per unit of area per unit of time. In SI its units are watts per square metre (W/m2). It has both a direction and a magnitude, and so it is a vector quantity.

How to Calculate Heat Flux?

Heat Flux calculator uses Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor) to calculate the Heat Flux, Heat flux or thermal flux, sometimes also referred to as heat flux density, heat-flow density or heat flow rate intensity is a flow of energy per unit of area per unit of time. Heat Flux is denoted by q' symbol.

How to calculate Heat Flux using this online calculator? To use this online calculator for Heat Flux, enter Thermal Conductivity of Fin (k_fin), Temperature of Conductor (T) & Length of Conductor (l) and hit the calculate button. Here is how the Heat Flux calculation can be explained with given input values -> 78.66364 = 10.18*(85/11).

FAQ

What is Heat Flux?

Heat flux or thermal flux, sometimes also referred to as heat flux density, heat-flow density or heat flow rate intensity is a flow of energy per unit of area per unit of time and is represented as q' = k_fin*(T/l) or Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor). Thermal Conductivity of Fin is rate of heat passes through Fin, expressed as amount of heat flows per unit time through a unit area with a temperature gradient of one degree per unit distance, Temperature of Conductor is the degree or intensity of heat present in a heat conductor & Length of Conductor is the measure of length of wire.

How to calculate Heat Flux?

Heat flux or thermal flux, sometimes also referred to as heat flux density, heat-flow density or heat flow rate intensity is a flow of energy per unit of area per unit of time is calculated using Heat Flux = Thermal Conductivity of Fin*(Temperature of Conductor/Length of Conductor). To calculate Heat Flux, you need Thermal Conductivity of Fin (k_fin), Temperature of Conductor (T) & Length of Conductor (l). With our tool, you need to enter the respective value for Thermal Conductivity of Fin, Temperature of Conductor & Length of Conductor and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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