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9-2 The Reflected Irradiance IRθ

Author: Source: Datetime: 2016-12-22 11:59:25

The reflected irradiance  IRθ

AgFg-c = AcFc-g
θ =ρ(IDH + IdH) AgFg-c
The slope of the reflected irradiance is isotropic, according to the law of angular coefficient interchange, there

Where, Ag  is the ground area,Fg-c, Fc-g is the angular coefficient; ρ is the ground reflectivity; IRθ is the slope of the reflected irradiance.
While in closed space

In general, the total solar irradiance on the slant surface includes the solar direct irradiance IRθ on the slant surface, the solar scattering irradiance IRθ on the slant surface and the reflected irradiance IRθ on the slant surface.

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