Radiosity (heat transfer)

Radiosity is the total of emitted and reflected radiation leaving a surface, in the fields of optics and heat transfer. Hemispherical radiosity J_λ(λ) is the integral of the spectral intensity of reflected plus emitted radiation over the hemispherical solid angle^[1]. The total hemispherical radiosity J is the integral of the hemispherical radiosity over all wavelengths:

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The radiosity method is used to solve for the radiative heat transfer between a number of surfaces. Because the radiation hitting each surface is determined by the temperatures of of all the other surfaces, this method requires the solution of a system of simultaneous equations using matrix methods. For more information see Radiosity (computer graphics).

See also

• Irradiance
• Radiant flux
• Radiosity (computer graphics)
• Radiative heat transfer

References

1. ^ Incropera and deWitt, Fundamentals of Heat and Mass Transfer, 3rd ed, ISBN 0471386502