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DIY Photovoltaic Panels - Page 2

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Posted by Curbie on February 25, 2011, 10:33 pm
 
wrote:


Good point!

I was going to build active solar-thermal panel for heat only, but
combining the two has some interesting advantages.

Thanks,

Curbie


Posted by Jim Wilkins on February 24, 2011, 10:40 pm
 

The Harbor Freight 45W panel and charge controller kit is on sale with
a coupon for $59 until April 17. I measured 2.5A from it in mid-
February sun.

jsw


Posted by Curbie on February 25, 2011, 12:04 am
 Hi Jim,

I found a 5 star rated seller on Ebay selling 1000 watt  packs of 3x6
PV cells for ~$00.00 and in studying this method I was looking at
about 4000 watts.

Curbie



Posted by Martin Riddle on February 24, 2011, 11:45 pm
 




Sylguard doesn't always bond well, the parts need to be free of any
contaminates (eg: oil). It will not cure in the spot where there is
contamination.  It is also soft when fully cured, like a jelly.
Aggressive mixing will also introduce bubbles.
Thermal properties arent all that great, But I do see that it is UV
resistant.
If you have a large vacuum oven to process it in, then it might work ok.

Cheers
 



Posted by Curbie on February 25, 2011, 12:13 am
 On Thu, 24 Feb 2011 18:45:53 -0500, "Martin Riddle"


Funny, when I was looking at those You-Tube videos, the author was
saying that he preferred cooler temperatures and long curing times,
and I was thinking what his process needed was a vacuum cover over the
frame to draw the bubbles out of the Syldard.

Curbie


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