[BLDG-SIM] Modelling of a domed roof?

[Jason Glazer]

Brian,

An interesting question.  I've never modeled a dome so this 
is based on intuition.

If you are thinking about comparing different dome 
insulation levels, dome shapes, etc.., then I would be 
careful and have a surface for every difference of 10 to 30 
degrees (this adds up to a lot of surfaces).  

On the other hand, if the dome will not change between 
simulation permutations, I would probably just use nine 
surfaces: eight each 45 degrees from one another around the 
dome each tilted 45 degrees and another flat one on top.  

Remember, in the model these surfaces can be square as long 
as the areas add up to the correct total area and they 
don't cast shadows on each other.

Jason

On 25 Jul 2005 at 9:30, Brian Fountain wrote:

> I am developing a DOE-2 model in eQUEST for a building with
> a large domed roof.  Does anyone have any suggestions for
> approximating roof geometry - i.e. how many facets should I
> use for reasonable solar gain & conduction results?
> 
> 
> 
> Any help is appreciated.
> 
> 
> 
> Regards,
> 
> Brian
> 
> 
> 
> ______________________
> 
> Brian Fountain, P.Eng.
> Energy Engineer
> GreenSim
> Burlington, ON, Canada
> (905)639-6014 -- voice
> (905)639-0443 -- fax
> bfountain at greensim.com

=========================================================
Jason Glazer, P.E.  jglazer AT gard DOT com  847 698 5686
GARD Analytics - http://www.gard.com/
1028 Busse Highway, Park Ridge, IL 60068
Building Energy Simulation and Analysis
Admin of BLDG-SIM list for building simulation users



======================================================
You received this e-mail because you are subscribed 
to the BLDG-SIM at GARD.COM mailing list.  To unsubscribe 
from this mailing list send a blank message to 
BLDG-SIM-UNSUBSCRIBE at GARD.COM