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Renee,
Have
you downloaded equest 3.61b yet? This new version seems to have a greatly
expanded array of skylight modeling capability. Although I haven't had an
oportunity to use it yet there is capability for specifying light
tubes. I would be curious to know if you get better results than previous
versions of eQuest. I still don't think you can model daylighting through
interior windows though.
Also
for those who haven't updated eQuest in a while there are some recent
updates.
There
is an updated version of 3.6 from last week.
For
those using 3.61b there is an update that fixes several bugs and
includes new features like variable exhaust at the zone level
and packaged PIU units so you can finally model Appendix G System 6.
Look for eQuest 3-61 D2244e4 dated Feb 16.
Because the different versions install in different directories you can
have v3.55, 3.6 and 3.61 on your PC at the same time without any
trouble.
Mike
Michael Tillou,
PE
ETC
Group - Energy Engineering for a Sustainable Future
Ph:413-458-9870
I have never had success at getting daylighting to work
without exterior glazing on a wall. Interior glazing and skylights alone
will not work. DOE2 engines require some exterior walled glazing. I would
recommend that you create the zone in a separate file, determine the T-vis and
SHGC change through two layers of glazing on the wall and add your skylights.
I'm not clear if DOE2 will model the daylighting effect of skylights well or
if it will just take the daylight energy savings from the wall. I was modeling
SolaTubes the other day in a zone with exterior walled glazing and it
didn't seem to provide much savings, a lot less than I would have
expected. Anyone else have any thoughts on this?
Renee
I am modeling a building with a
4-story internal atrium with skylights on the roof. There are some
interior rooms with interior windows facing the atrium, and I have enabled
daylighting for these rooms. When I run the simulation I get errors for
all of the rooms with only interior windows saying that the window area must
be greater than 0.1 ft2 for the room. The windows are much larger than
that. Has anyone else run into this kind of problem? Any
thoughts?
Thanks in
advance!
Michael L.
Kingsley
E-mail:
kingsleym@saic.com
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