Heat Flux Calculator

↳

⤿

Basics of HMT

Conduction

Convection

Convective Mass Transfer

✖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_o]			+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]

⎘ Copy

👎

Formula

✖

Heat Flux

Formula

`"q" = "k"_{"o"}*"T"/"l"`

Example

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

Calculator

LaTeX

Reset

👍

Download Heat and Mass Transfer Formula PDF

Heat Flux Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Flux = Thermal Conductivity of Fin*Temperature of Conductor/Length of Conductor
q = k_o*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_o*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 ≈ 78.66364 Watt per Square Meter <-- Heat Flux

(Calculation completed in 00.020 seconds)

You are here -

Home » Physics » Heat and Mass Transfer » Basics of HMT » Heat Flux

Credits

Created by Kethavath Srinath

Osmania University (OU), Hyderabad

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

Verified by Team Softusvista

Softusvista Office (Pune), India

Team Softusvista has verified this Calculator and 1100+ more calculators!

< 6 Basics of HMT Calculators

Thermal resistance for conduction through 2 resistances in parallel

Go Thermal Resistance = (Length)/((Thermal Conductivity 1*Point 1 Cross-Sectional Area)+(Thermal Conductivity 2*Point 2 Cross-Sectional Area))

Total Thermal Resistance for Conduction through Two Resistances in Parallel

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

Total Thermal Resistance for Conduction through Three Resistances in Series

Go Thermal Resistance in Series = Thermal Resistance 1+Thermal Resistance 2+Thermal resistance 3

Heat Flux

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

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 and Psychrometry 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 of Circular Rod = 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_o*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_o), 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_o*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_o), 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.

Home

FREE PDFs

🔍 Search