[BLDG-SIM] effect of window blinds on solar heat gain

[Rob Hitchcock]

EnergyPlus will allow you to simulate interior window blinds and shades 
(as well as exterior, and between glazing layers).  On/off deployment of 
the blinds or shades on a time step basis can be controlled in several 
ways (see the WindowShadingControl input object).  You will have to 
define the solar and thermal characteristics of the blind or shade (see 
the Material:WindowShade or Material:WindowBlind input objects).  Also 
see the EnergyPlus Engineering Reference documentation for more detail 
on the calculation methods (Shaded Window under Daylighting and Window 
Calculations, and Shading Device Thermal Model under Window Heat Balance 
Calculation).

Rob Hitchcock
-- 

Robert J. Hitchcock, Ph.D.
Lawrence Berkeley National Laboratory
RJHitchcock at lbl.gov

==============
Alec Stevens wrote:

> Hi,
>
> Does anyone have any source that documents the effect of (interior) 
> window blinds on solar heat gain?
>
> We are working on a project with motorized blinds that would respond 
> to a photocell.  The blinds are a fabric mesh that allows 40% visible 
> transmittance.
>
>  
>
> Has anyone used a reliable factor to account for any reduction in 
> solar heat gain from this type of window blind?
>
>  
>
> Thanks for any info that you may have!
>
>  
>
> Sincerely,
>
> Alec Stevens, PE, LEED AP
>
> DMI
>
> 450 Lexington St., Newton, MA 02466
>
> p: 617-527-1525 x105 f: 617-527-6606
>
> e: astevens at dmiinc.com
>
>  
>
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