Re: [EnergyPlus_Support] Re: Does EnergyPlus support daylighting through internal windows in floors?

[Rob Hitchcock <RJHitchcock@xxxxxxx>]

Lawrence,

I'm not sure what you think is wrong with what you are seeing.  If I 
correctly understand your description below, with an internal window in 
the floor between the upper zone with skylights and the lower zone, you 
see light transmitted between the zones.  Without the internal window 
you do not see light transmitted between the zones.  Isn't this what you 
would expect?

Rob
========
lawrenceblount wrote:

> Hi Mike and all,
>
> Thank you for your comments.
>
> I have uploaded a folder named "Midfloor window" with 3 idf and my
> weather file. The names are hopefully self explanatory. If I open
> the *MAP.csv files and generate a surface in Excel for 1 January at
> 10am, I get light spots on the lower floor from the skylights when
> the midfloor window is present. If I use the file without the
> midfloor window (the only change), I only get the lighting from the
> lower level north window. The idf is setup to output the dxf file
> for you to view my model.
>
> I really appreciate if anyone can see where I have gone wrong.
>
> Thanks
> Lawrence
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>, "Michael J. Witte"
> <mjwitte@...> wrote:
> >
> > If you want to transmit solar from one zone to another, you must
> use a pair of
> > interior windows as you suggest. This will transmit both beam and
> diffuse
> > between zones, but once the solar enters the second zone it is all
> treated as
> > diffuse. Search the Input Output Reference for "interior window"
> for more
> > information.
> >
> > The amount of solar transmitted from the attic zone to the zone
> below should be
> > proportional to the size of the interior window, and the remaining
> attic floor
> > area should be opaque. If you are seeing something other than
> this, please
> > upload input files to the yahoo files area or send zipped to
> energyplus-
> > support@...
> >
> > Mike
> >
> >
> > On 13 Aug 2007 at 9:36, lawrenceblount wrote:
> >
> > > Hi,
> > >
> > > I am fairly new to EnergyPlus, although I have used Ecotect and
> Tas
> > > before.
> > > I have a light well that is effectively a window in the floor of
> an
> > > attic space. The attic has some skylights.
> > > I am finding that when I add a matching pair of windows to the
> internal
> > > ceiling and floor objects that the whole midefloor becomes
> transparent
> > > to direct solar. If I remove the internal windows the midfloor
> then
> > > becomes completely opaque.
> > >
> > > I would like comments as to whether I am likely to be making some
> > > errors or this function is outside the capability of E+. The
> capability
> > > is available in wall elements.
> > >
> > > Cheers
> > > Lawrence
> > >
> > >
> > >
> > > The primary EnergyPlus web site is found at:
> > > http://www.energyplus.gov <http://www.energyplus.gov>
> > >
> > > The group web site is:
> > > http://groups.yahoo.com/group/EnergyPlus_Support/ 
> <http://groups.yahoo.com/group/EnergyPlus_Support/>
> > >
> > > Attachments are not allowed -- please post any files to the
> appropriate folder
> > > in the Files area of the Support Web Site.
> > >
> > > EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf
> under the
> > > Documentation link and press the "search" button.
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> >
>
>  




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