Radiative Heat Transfer
The radiative heat transfer from one surface to another is equal to the radiation entering the first surface from the other, minus the radiation leaving the first surface.
- For a black body
Using the reciprocity rule, this simplifies to:
where is the Stefan–Boltzmann constant and is the view factor from surface 1 to surface 2.
- For a grey body with only two surfaces the heat transfer is equal to:
where are the respective emissivities of each surface. However, this value can easily change for different circumstances and different equations should be used on a case per case basis.
Read more about this topic: Thermal Radiation
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