[Greenbuilding] windows - flush vs recessed

[John O'Brien]

At what point within a recessed wall do you start lose gains due to
overshading. I guess you could throw in some mirror'd jambs to save
the day.



On Wed, Jan 18, 2012 at 10:08 AM, Corwyn <corwyn at midcoast.com> wrote:
> On 1/16/2012 9:49 AM, Alan Abrams wrote:
>>
>> thoughtful article.  PH teaches that the optimum location for windows is
>> near the center of the section, based on modeling in THERM.  an
>> important consideration is preventing a metal flange from acting like a
>> cooling fin--.  this, however, is based only on conductance, and does
>> not consider wind lashing or exposure to rain, which is discussed in the
>> article.
>
>
> I would clarify that one wants the *thermal* center of the wall.  I was
> (thankfully) able to convince a client with a center insulated rammed earth
> wall, that the place for windows was in the middle of the insulation (not at
> the outside).  In that case the difference was something like 25% of the
> total heat load (yes, an extreme case).  If that insulation had been offset
> from the center of the wall, the windows would have moved with it, not
> stayed in the center.
>
> Thank You Kindly,
>
> Corwyn
>
>
> --
> Topher Belknap
> Green Fret Consulting
> Kermit didn't know the half of it...
> http://www.greenfret.com/
> topher at greenfret.com
> (207) 882-7652
>
>
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