When using spectral data, EnergyPlus uses one set of weighting functions that correspond to NFRC 100-200. There is not currently a way to specify which weighting function to use but that is on the big wish list.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of FrancescoP
Sent: Tuesday, May 21, 2013 2:09 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] spectral composition of solar radiation
I'm modeling a sunspace and comparing the results with monitored data. The inside temperatures are influenced a lot by the model that is used for the windows, therefore I'm reading about the object MaterialProperty:GlazingSpectralData
I have a question: how the is spectral composition of solar radiation considered in the simulation? I mean, is it considered constant or does it change during the simulation (in my layman's opinion, the distribution of energy among the different wavelengths, in percentage terms, depends on the cloudiness)?
Regards
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