Hi Aymeric.
The calculation method for daylight takes into consideration the presence of a DSF when one exists (I/O reference, pag. 444). As for the construction being fully glazed, its an interesting case scenario. Can't provide you with an answer, but i'm also curious as to know if E+ can handle all the transmissions/reflections that occurs in such a zone.
Some questions: do you have some kind of ventilation on your DSF or is it acting like a buffer? And what parameter or parameters of the blind are you actually using to reduse its size?
Pedro.
On 01-03-2011 9:56, aymericnovel wrote:
Dear all,
I am facing a quite challenging design right now and I a m not sure if the current Eplus can do it. the software isn't bugging but I am worrying about the validity of the model.
Rough description is:
Fully glazed double skin open space for sport activity
10m floor to height ceiling and 64m side lenght (it's a square)
Double skin design (double pane for internal skin and simple pane for external skin)
So far I have not even tempted to read results obtained from the real architecture that includes some details that makes it not exactly a square geometry. I want to validate the simple square model.
I am not sure of:
1) Is the geometry not compatible with energy plus daylighting calculation capabilities (flux split method is said to be limited to cases where room depth is less than 3 times floor to height ceiling): Here it is not the case but the space is fully glazed.
2) Is the daylighting model capable of properly handling the daylight distribution in the sport area with a double skin zone between it and outside?
3) If 2) is possible, what happens if I put a blind in the double skin zone? I have tried many simulations and I believe this is not working well. When one tries to reduce the blind dimensions to almost nothing to get close to the case where there is no blind, results don't get close.
It is a very tricky design and the architect counts on these simulations to be sure of his facade design. Of course it is a hot and sunny climate so the guy came and said "hey, can you help me doing an energy efficient glass cube under the sun?".
Any help on the above questions and/or about a proper methodology to assess such a case would be immensely appreciated!
Thanks a lot!
Aymeric
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