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[EnergyPlus_Support] Re: Where to set the F-factor of the slab-on-grade floor, and the reflectance of the roof?

To model floors with F-factor method there is a special componant needed. Search the io documentation for FCMethod. As for the reflectance...look at your outer most layer material of your roof construction. It will have a Solar Absorptance property, and reflectance is the opposite (i.e. 1-absorbtance).
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, ���� <foolishstar@...> wrote:
>
> Dear all,
> 
> 
> I'm now simulating a building with E+, but I don't know where to set the F-factor of the slab-on-grade floor or the reflectance of the roof.
> Can anybody help me? These two parameters are required in the ASHRAE90.1. 
> Is it right to set the two parameters in the "material" of "surface construction elements"?
> 
> 
> Thanks!
> 
> 
> Han Xing
>




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