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Posted by Paul on September 26, 2005, 3:29 am
 


  On the previous post, I meant to say Gary's idea :)
On this page, about half way down. they have a diagram.
http://www.solar-components.com/SOLARKAL.HTM
Looks like corrogated aluminum painted black in a box.



Posted by Philip Lewis on September 26, 2005, 1:56 pm
 


http://www.motherearthnews.com/library/1977_September_October/Mother_s__Heat_Grabber_  
Thanks for the M.E. link paul.. i'd seen it in the past, but forgot about it.


Gary's units look great, which has appeal.... but the price seems a
little high for our current situation. (I set a budget of ~1000 for
"experimental" devices)

The mother earth unit looks like the best of many worlds....
The only thing i think it needs is a bit better absorber plate.
That corricated AL might be the trick, since air will flow on both
sides. I hadn't thought of eliminating the plywood box and just using
ridged insualtion...I'd worry about it being a bit light
though... perhaps not with the glass/polycarb and absorber plate.
Also, I can custom fit a full 4x8 sheet's worth of space into a window
interface

I don't know if baffles would be needed to get better heat transfer.
Perhaps I'll try without and see what happens... K.I.S.S. and what not.

--
be safe.
flip
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Posted by Paul on September 27, 2005, 2:57 am
 

http://www.motherearthnews.com/library/1977_September_October/Mother_s__Heat_Grabber_

  In California, the cement slab patio with sliding glass door is built into
many homes. I would think that if you built a patio enclosure out of
multiwall
polycarbonate and put in some black indoor outdoor carpeting, there you go.
Leave the glass sliding door open druing the day and close it at night.



Posted by nicksanspam on September 26, 2005, 3:47 pm
 

http://www.builditsolar.com/Projects/Sunspace/sunspaces.htm
 

You might store heat in less hot thermal mass above a low-e (foil-mirrored)
ceiling (a la Hugh Hefner?) If that's not your cup of tea, the mass could be
above a false ceiling, eg a flat poly film duct with 2" of water above foil
above welded wire fence above an air gap above plywood or acoustic tile.

Nick


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