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[BLDG-SIM] eQUEST daylight through interior windows



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


From: BLDG-SIM@xxxxxxxx [mailto:BLDG-SIM@xxxxxxxx] On Behalf Of Kingsley, Michael L.
Sent: Monday, March 12, 2007 7:21 AM
To: BLDG-SIM@xxxxxxxx
Subject: [BLDG-SIM] eQUEST daylight through interior windows

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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