[Greenbuilding] Glass overhead doors for passive solar application?

[Rob Tom]

On Mon, 04 Dec 2006 23:36:20 -0500, Keith Winston  
<keith at earthsunenergy.com> wrote:

> Uh, an R-17 window? I don't think you'll find that.
>
> The very best glass I know of is Superglass 88 or whatever it's called,
> which has a center-of-glass value of about R-10.
[snip]
>
> If you find an R-17 window, I'll use it in every single
> project from now on, I promise you!


Keith;

Uh oh.

I think that you may have just committed yourself to buying Thermotech  
windows
                http://www.thermotechwindows.com
for the rest of your life, assuming that you are a man who honours his  
promises.

Years ago, rumour had it that those wascawy wabbits at Thermotech, just  
for the fun of it, made a window that outperformed an R-20 stud wall.  
(Yes, with glass in it and through which one could see through.)

So, I hope that you are located in the Northeast portion of the USA rather  
than some bizarre place like California (so as to keep shipping costs &  
transportation energy at a minimum).

But I agree.
Overhead sectional glass doors as a window wall ?
Nifty maybe, but energy-efficient ?
[acquiring a Cockney accent a la Monty Python gang]  Nought blowdy loikly !

===* ===
Rob Tom
Kanata, Ontario, Canada
<archilogic at chaffyahoo dot ca>
winnow the chaff from my edress in your reply