Re: [EnergyPlus_Support] solar transmittance

["Achim Geissler" <Achim.Geissler@xxxxxxxxxxxxxxxx>]

Hi,

most probably your value is for normal incidence. In the simulation,
solar radiation usually has an angle other than normal (smaller) for
which transmittance is reduced (down to zero for parallel).

Achim


>>> bclwong@xxxxxxxxxxxx 08/17/04 12:49pm >>>
Hi,

I constructed a external wall with a window and without window 
shading device and window frame. The solar transmittance of the 
window glass is 0.775 (clear glass). But the simulated result of 
window system solar transmittance is 0.7. I wonder if someone can 
tell me why the difference was happened.

lee





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