http://en.wikipedia.org/wiki/Vacuum_insulated_panel

On 08/12/2013 18:40, harryagain wrote:
http://en.wikipedia.org/wiki/Vacuum_insulated_panel


But I have seen that (or something that is functionally extremely
similar) in John Lewis.


A sample of refrigerator/freezer insulation.

--
Rod

In article ,
"harryagain" writes:
http://en.wikipedia.org/wiki/Vacuum_insulated_panel

I've seen it covered in the building press.
It's basically double glazing, but with a vacuum, and a spacer to keep
the glass apart. There's only a 1mm gap, as a larger gap is no advantage
with a vacuum. The spacer was a grid of regularly spaced 1mm balls (or
so it appeared), so it's not invisible. The glass panes can be thinner
too, as they act together as one. This means it can be used in places
which can't take even the thinnest double glazing.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On 08/12/2013 19:07, Andrew Gabriel wrote:
In article ,
"harryagain" writes:
http://en.wikipedia.org/wiki/Vacuum_insulated_panel

I've seen it covered in the building press.
It's basically double glazing, but with a vacuum, and a spacer to keep
the glass apart. There's only a 1mm gap, as a larger gap is no advantage
with a vacuum. The spacer was a grid of regularly spaced 1mm balls (or
so it appeared), so it's not invisible. The glass panes can be thinner
too, as they act together as one. This means it can be used in places
which can't take even the thinnest double glazing.

Lets hope it lasts longer than your average sealed unit...


--
Cheers,

John.

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I've seen it covered in the building press.
It's basically double glazing, but with a vacuum, and a spacer to keep
the glass apart. There's only a 1mm gap, as a larger gap is no
advantage with a vacuum.

Just 0.2mm in some Pilkington stuff

The spacer was a grid of regularly spaced
1mm balls (or so it appeared), so it's not invisible. The glass panes
can be thinner too, as they act together as one. This means it can be
used in places which can't take even the thinnest double glazing.

Pilkington claim just 6mm overall. I'd need to win the lottery first as
it ain't cheap but I know someone whose been looking at it as he reckons
it his best bet to get double glazing into a listed property (or at
least where period glass has already been replaced by float).

And I'm told you can tell when it leaks as its balls drop. I don't know
if it then starts squeaking funnily as well when washed:/
--
Robin
reply to address is (meant to be) valid