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Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q". Check FAQs
q=-kot⋅(Tw2-Tw1)
q - Heat Flux?ko - Thermal Conductivity of Fin?t - Wall Thickness?Tw2 - Temperature of Wall 2?Tw1 - Temperature of Wall 1?

One Dimensional Heat Flux Example

With values
With units
Only example

Here is how the One Dimensional Heat Flux equation looks like with Values.

Here is how the One Dimensional Heat Flux equation looks like with Units.

Here is how the One Dimensional Heat Flux equation looks like.

78.3077Edit=-10.18Edit0.13Edit⋅(299Edit-300Edit)
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HomeIcon Home » Category Engineering » Category Mechanical » Category Thermodynamics » fx One Dimensional Heat Flux

One Dimensional Heat Flux Solution

Follow our step by step solution on how to calculate One Dimensional Heat Flux?

FIRST Step Consider the formula
q=-kot⋅(Tw2-Tw1)
Next Step Substitute values of Variables
∴ q=-10.18W/(m*K)0.13m⋅(299K-300K)
Next Step Prepare to Evaluate
∴ q=-10.180.13⋅(299-300)
Next Step Evaluate
∴q=78.3076923076923W/m²
LAST Step Rounding Answer
∴q=78.3077W/m²

One Dimensional Heat Flux Formula Elements

Variables
Heat Flux
Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q".
Symbol: q
Measurement: Heat Flux DensityUnit: W/m²
Note: Value can be positive or negative.
Formulas to find Heat FluxOpen Variable
Thermal Conductivity of Fin
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.
Symbol: ko
Measurement: Thermal ConductivityUnit: W/(m*K)
Note: Value should be greater than 0.
Formulas to find Thermal Conductivity of FinOpen Variable
Wall Thickness
Wall Thickness is simply the width of the wall that we are taking under consideration.
Symbol: t
Measurement: LengthUnit: m
Note: Value can be positive or negative.
Formulas to find Wall ThicknessOpen Variable
Temperature of Wall 2
The Temperature of Wall 2 is defined as the heat maintained by wall 2 in a system of 2 walls.
Symbol: Tw2
Measurement: TemperatureUnit: K
Note: Value can be positive or negative.
Formulas to find Temperature of Wall 2Open Variable
Temperature of Wall 1
The Temperature of Wall 1 is the degree or intensity of heat present in Wall1.
Symbol: Tw1
Measurement: TemperatureUnit: K
Note: Value can be positive or negative.
Formulas to find Temperature of Wall 1Open Variable

Other Formulas to find Heat Flux

​Go Newton's Law of Cooling
q=ht⋅(Tw-Tf)
​Go Heat Flux
q=ko⋅Tl

Other formulas in Conduction, Convection and Radiation category

​Go Heat Transfer
Qh=TvdRth
​Go Heat Transfer According to Fourier's Law
Qc=-(k⋅As⋅ΔTL)
​Go Total Thermal Resistance for Conduction through Three Resistances in Series
Rse=R1+R2+R3
​Go Total Thermal Resistance for Conduction through Two Resistances in Series
Rth=R1+R2

How to Evaluate One Dimensional Heat Flux?

One Dimensional Heat Flux evaluator uses Heat Flux = -Thermal Conductivity of Fin/Wall Thickness*(Temperature of Wall 2-Temperature of Wall 1) to evaluate the Heat Flux, One Dimensional Heat Flux formula is defined as a representation of the rate of heat transfer through a material in one direction, highlighting the relationship between thermal conductivity, temperature difference, and the distance over which heat flows. Heat Flux is denoted by q symbol.

How to evaluate One Dimensional Heat Flux using this online evaluator? To use this online evaluator for One Dimensional Heat Flux, enter Thermal Conductivity of Fin (ko), Wall Thickness (t), Temperature of Wall 2 (Tw2) & Temperature of Wall 1 (Tw1) and hit the calculate button.

FAQs on One Dimensional Heat Flux

What is the formula to find One Dimensional Heat Flux?
The formula of One Dimensional Heat Flux is expressed as Heat Flux = -Thermal Conductivity of Fin/Wall Thickness*(Temperature of Wall 2-Temperature of Wall 1). Here is an example- 77.76929 = -10.18/0.131*(299-300).
How to calculate One Dimensional Heat Flux?
With Thermal Conductivity of Fin (ko), Wall Thickness (t), Temperature of Wall 2 (Tw2) & Temperature of Wall 1 (Tw1) we can find One Dimensional Heat Flux using the formula - Heat Flux = -Thermal Conductivity of Fin/Wall Thickness*(Temperature of Wall 2-Temperature of Wall 1).
What are the other ways to Calculate Heat Flux?
Here are the different ways to Calculate Heat Flux-
  • Heat Flux=Heat Transfer Coefficient*(Surface Temperature-Temperature of Characteristic Fluid)OpenImg
  • Heat Flux=Thermal Conductivity of Fin*Temperature of Conductor/Length of ConductorOpenImg
Can the One Dimensional Heat Flux be negative?
Yes, the One Dimensional Heat Flux, measured in Heat Flux Density can be negative.
Which unit is used to measure One Dimensional Heat Flux?
One Dimensional Heat Flux is usually measured using the Watt per Square Meter[W/m²] for Heat Flux Density. Kilowatt per Square Meter[W/m²], Watt per Square Centimeter[W/m²], Watt per Square Inch[W/m²] are the few other units in which One Dimensional Heat Flux can be measured.
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