[EnergyPlus_Support] Re: Light shelf simulation in Energy Plus

["Jean marais" <jeannieboef@xxxxxxxxx>]

Is the problem the external lightshelf modeled by a shading surface or an internal lightshelf modeled with the lightshelf object?

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> wrote:
>
> Did you look and follow what is in the example file that has a light shelf?
> 
> At 06:00 PM 10/12/2012, Belal wrote:
> >Hi,
> >
> >Thanks for your help.
> >I already have the overhang modeled, but i have a hard time defining 
> >the light shelf in energy plus.
> >
> >Belal
> >
> >
> >
> >--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jean marais" 
> ><jeannieboef@> wrote:
> > >
> > > In e+ the walls, floors and roof will only selfshade in as far as 
> > the form a closed volume. this means a roof object that projects 
> > over the wall will not shade for the projecting portion. this 
> > porttion must be modeled using a shading object (shading group in 
> > openstudio). Shading objects can be made translucent, reflectant, 
> > ect. by means of asigning these properties to them by using yet 
> > again other "sub" objects. Read up on these in the io ref. That 
> > should get you going.
> > >
> > > Jean Marais
> > >
> > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Belal" <bka255@> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > I'm a new user to Energy Plus, i want to add an exterior light 
> > shelf to an existing model.(The model already includes an exterior overhang).
> > > >
> > > > I tried to increase the reflectivity of the overhang top side 
> > from 0.5 to 0.9, but it made no difference. Then i created a new 
> > material and a new construction for the light shelf material, and 
> > added a light shelf in the daylighting category and defined the top 
> > side of the overhang as a light shelf, but i get empty spreadsheets 
> > for the results.
> > > >
> > > > Is there something wrong i did? Please help me resolve this 
> > issue so i can move on with my mater's thesis.
> > > >
> > > > Thank you all,
> > > >
> > > > Belal
> > > >
> > >
> >
> >
> >
> >
> >------------------------------------
> >
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> >
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> >
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> >Yahoo! Groups Links
> >
> >
> >
>




------------------------------------

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