[Greenbuilding] Passive solar heat loss calculations

[Corwyn]

On Apr 22, 2007, at 23:18, barbara deane-gillett wrote:
>  you already seem to assume r5 windows low e . but
>    you might consider r2 windows (clear/argon fil) on the south with r 
> 10 night
>    insulation thus doubling your solar gain for the same total glass 
> heat loss.
>    the solar gain # seems high for r5 low e i would guess half that.

I think you should evaluate window solar gain, by the solar heat gain 
coefficient.  Windows with similar R-values can have greatly different 
SHGC values.  (look up hard coat lo-e)  That said, using different 
windows on the south for increased solar gain is a great idea 
(especially with night time insulation).


Thank You Kindly,

Corwyn
-- 
Corwyn
Kermit didn't know the half of it...
http://www.greenfret.com/
corwyn at greenfret.com