[EnergyPlus_Support] Re: BlockBeamRadiation

["lorenzomattarolo" <lorenzomattarolo@xxxxxxxx>]

Hi Rob,

thanks for your answer.
When you skecth the angle you said you considered "solar horizontal
profile angle". But shouldn't we use "solar altitude angle" to check
if the direct radiation is blocked by the slats?

Which is the difference between the two outputs? I read the manual but
i can't understand the difference...

Many thanks

Lorenzo


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Rob Hitchcock
<RJHitchcock@...> wrote:
>
> Lorenzo,
> 
> The blind slat angles under this control strategy also seemed 
> non-intuitive to me at first.  However, when I took the time to
manually 
> sketch the blinds for a few time steps at the output "Window Blind Slat 
> Angle", and sketch the "Solar Horizontal Profile Angle", I convinced 
> myself that the resulting blind angles are correct.  Note that this
slat 
> angle is calculated to block direct transmission of beam solar, but it 
> is not intended to block diffuse reflection of that beam solar from the 
> blind slat surfaces into the zone.
> 
> Rob
> =============
> lorenzomattarolo wrote:
> 
> > Hi
> >
> > I'm trying to simulate external window blind with the shading control
> > "block beam solar".
> > I obtained some strange results looking at the angle of the slats in
> > the output: the angle varies but not in the extent it should do to
> > block completely the direct radiation (e.g. in the morning slats are
> > horizontal when they should be almost vertical...)
> >
> > Have you ever found similar problems?
> > Maybe I'm missing something, but i don't tealize what.
> >
> > Many thanks,
> >
> > Lorenzo
> >
> >  
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>




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