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[EnergyPlus_Support] Re: Does EnergyPlus support daylighting through internal windows in floors?
Hi Rob,
I am keen to learn what you find out.
Cheers
Lawrence
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Rob Hitchcock
<RJHitchcock@...> wrote:
>
> Lawrence,
>
> Sorry for the delay. There does seem to be something puzzling
here.
> I'm looking into it further.
>
> Rob
> ========
> lawrenceblount wrote:
>
> > Hi Rob,
> >
> > Thank you for your comments.
> >
> > The issue I have is that the direct beam solar is actually passing
> > through the midfloor not where the window is placed. The window is
> > 900mm deep and placed near and along the south wall. I can clearly
> > trace the high intensity light spots from the skylights through
the
> > opaque part of the midfloor down onto the lower floor.
> >
> > Cheers
> > Lawrence
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> > <mailto:EnergyPlus_Support%40yahoogroups.com>, Rob Hitchcock
> > <RJHitchcock@> wrote:
> > >
> > > 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>
> > > > <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>
> > <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/>
> > > > <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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> > > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
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