[Bldg-sim] Is there a quick model for double skins facades?
Marques da Silva
fms at lnec.pt
Fri Nov 12 00:58:39 PST 2010
Hi
Using En+ for DS may lead to unrealistic results. A student of mine made
is MSc comparing En+ results to the monitoring results of a naturally
ventilated DSF test cell and the air gap air temperature/ventilation
flow was significantly out of reality (unfortunately it's in
portuguese). Similar results obtained by Kim et all may be found at
http://www.iaqvec2010.org .
You can check at IEA Annex 44
(http://www.ecbcs.org/annexes/annex44.htm#p.) what is available and a
set of pros and cons, but DSF is not an easy task to properly model.
R B wrote:
> Maybe modelling the cavity as sunspace might work - it will not take
> care of the cavity ventilation part but will probably work for the
> solar radiation part (not sure if sunspace allows for daylighting -
> you will have to check on that.)
> Another option would be to use EnergyPlus - I think it has an example
> file for double facade.
>
> -Rohini
>
> On Thu, Nov 11, 2010 at 8:58 AM, Sami, Vikram
> <Vikram.Sami at perkinswill.com <mailto:Vikram.Sami at perkinswill.com>> wrote:
>
> We are doing a project in a pretty cold climate. The project
> design has a really big glass façade facing south. One of the
> ideas to reduce conductive heat loss is to create a double skin
> façade on the south side.
>
>
>
> Now I realize that this is going to take a fair amount of analysis
> work to design it properly. What I was wondering is if there is a
> quick analysis tool/methodology to tell if this is even feasible
> to go into more detailed analysis.
>
>
>
> Any help would be much appreciated
>
>
>
> *Vikram Sami*, LEED AP
>
> Sustainable Design Analyst
>
> 1382 Peachtree St. NE, Atlanta, GA 30309
>
> t: 404-443-7462 f: 404.892.5823 e:
> vikram.sami at perkinswill.com <mailto:vikram.sami at perkinswill.com>
> www.perkinswill.com <http://www.perkinswill.com/>
>
> *Perkins+Will.* Ideas + buildings that honor the broader goals of
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>
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> --
> --------------------------------------------------------------------------------
> Rohini Brahme, Ph.D. LEED AP
> Building energy analysis, tool development, and training
> Dallas/Fort Worth, TX
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