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Posted by nicksanspam on July 15, 2006, 6:43 pm

Hey, it works for Bill Gates.


Posted by Mulan on July 15, 2006, 9:02 pm
Can you explan what the end goal is for the arrays and window etc.  I
was lost.
nicksanspam@ece.villanova.edu wrote:

Posted by Anthony Matonak on July 15, 2006, 10:42 pm
 Mulan wrote:

Nick was saying that windows are not as good at keeping heat out/in
a structure as walls. This is not in doubt. Even double pane windows
are only typically rated in the R3 to R6 range while walls typically
start around R16 and go up from there.

Nick further proposes that people could use video cameras outside
and TV screens inside to take the place of windows. This would let
them look outside without an actual, real, window.

I then proceeded to put some numbers to this video-window proposal
to show that it's not economical at this time.

The following is an example of what we are talking about.


Posted by nicksanspam on July 16, 2006, 9:05 am

That depends on the resolution. I proposed $35 windows. I'd probably
notice that the view doesn't change when I walk around the room, but
a few "windows" like this might be nice for non-critical views.

PA has about 5500 (F) HDD/year, so a square foot of R30 wall would
lose 24hx5500x1ft^2/R30 = 4400 Btu of heat per winter worth 1.3 cents
at 10 cents/kWh. A square foot of R3 window would lose about 13 cents,
or maybe twice that, counting the framing and air leakage. A 2400 ft^2
house with 8% of the floorspace (192 ft^2) as non-south windows might
lose $0/year through the windows.

If each of 32 2'x3' windows costs $00, and framing and installation
double that, a window house might cost $400-4320 = $080 more than
a house with 32 20" flat screens with VGA resolution.


Bill Gates allegedly has a house with something like this on the walls,
as well as windows.


Posted by News on July 18, 2006, 11:02 am

You could have pictures of Victoria Falls on the screen as well - for a

We might just use light pipes which give off quite a bit of light for their

English medieval houses, the Tudor looking ones with the black and white
timbers, had very small windows to keep heat in, and also glass was
expensive in those days.

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