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Re: Re: GBlist: window longevity




In a message dated 10/14/97 8:20:54 AM, you wrote:

<<The irony to this long-winded
story is that an ideal solution might have been to go back to a 1/4"
spacing, which worked very well for decades, and put krypton in the space.
With krypton the ideal spacing is much narrower than it is for air or
argon, and the energy performance is far better than the other gases used.
>>

Hi Alex,  First, thanks for the info on the current status of weld-edge glass
panels.  I also lamented the loss.  I betcha Anderson shied away from the
refridgerant gas fills at first because of the experience they had in the
sixties with some CFC turning blue in the welded-edge units.  I think they
were trying to get better r-value to compete with the newer sealed edge
units.  Something went wrong (I don't know what the chemistry was) and some
of the units took on a blue tint.

I am also in favor of welded edge glasswith Krypton fill.  It not only
repells wavy arrows, but repells Superman, too.  Think I'll crunch some
numbers on it.  - Terry
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