[Mahsima]

Hi.I simulated a glass greenhouse with cfd and used the solar ray tracing model. But I do not know what the values of direct visible, direct IR and diffuse hemispherical in section absorptivity in this simulation should be? Thanks.

[waynetsu]

Originally Posted by Mahsima

Hi.I simulated a glass greenhouse with cfd and used the solar ray tracing model. But I do not know what the values of direct visible, direct IR and diffuse hemispherical in section absorptivity in this simulation should be? Thanks.

Hi, Mahsima,

I am also working on a greenhouse using cfd.
I think diffuse hemispherical absorptivity is the lumped abosorbtivity across the solar band (0.2-2.5 μm).
But I am still puzzling about the difference between this parameter and absorption coefficient.
Have you solve the probelm yet? I hope we can share our cases together.

Wayne