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[EnergyPlus_Support] Re: Does EnergyPlus support daylighting through internal windows in floors?
Even if you are not sure why I getting beam solar through the opaque
midfloor, could anyone suggest some changes that I could try?
Kind regards
Lawrence
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "lawrenceblount"
<lawrenceblount@...> wrote:
>
> 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:
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> > > <http://groups.yahoo.com/group/EnergyPlus_Support/>
> > > > > <http://groups.yahoo.com/group/EnergyPlus_Support/
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> > > > > > >
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>
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