[Bldg-sim] Is there a quick model for double skins facades?

[Marques da Silva]

One of the most important issues on DSF (maybe the most important) is 
gap ventilation. So care should be taken into account when using sun 
space models.
> Rohini you are right -- Sun space does allow for solar transmission 
> through windows if an interior wall belongs to such a sun space -- 
> that's considering DOE 2.2.(eQuest)
> But, I wonder if the split flux method for daylight calcs is a good 
> choice anyways? . . . .Perhaps it's good for getting a hang on the 
> energy savings, if you have daylight sensors?!
>
> I think sun space will be a good quick and dirty way that Vikram may 
> be looking for if he already has a basic shell chalked out or can 
> create the shell and internal loads quickly.
>
> Best,
> Neeraj
>
> Neeraj Kapoor
> t: +91.99581.70018
>
> e: neeraj[at]kalpakrit[dot]com
> Kalpakrit Sustainable Environments Pvt. Ltd.
> www.kalpakrit.com <http://www.kalpakrit.com>
>
> Office Address :
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> Gurgaon, Haryana - 122016
>
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> f: +91.124.430.9493
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> 	
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>
> On 11-11-2010 21:18, 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 society
>>
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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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