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Passive Solar Heating Panels - Page 4

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Posted by Morris Dovey on February 14, 2013, 3:43 am
 
On 2/13/13 6:56 PM, j wrote:

I don't know - the pieces I used in my little panel were cut-offs from a  
friend's remodeling job that the heating contractor hadn't hauled away.

--  
Morris Dovey
http://www.iedu.com/Solar/  

Posted by Morris Dovey on February 14, 2013, 5:12 am
 
On 2/13/13 9:43 PM, Morris Dovey wrote:

Oops! I may not have understood the question. The front fins were cut  
from (replaced) venetian blind slats - repainted flat black.

--  
Morris Dovey
http://www.iedu.com/Solar/  

Posted by mike on February 14, 2013, 1:12 am
 On 2/13/2013 1:42 PM, Morris Dovey wrote:

Can you explain how it works?
If I'm interpreting the drawing correctly, there's a barrier
between the fins and the heat exchanger.
Shouldn't the air be going across the exchanger fins??

Posted by Morris Dovey on February 14, 2013, 4:09 am
 On 2/13/13 7:12 PM, mike wrote:

You read it correctly - the front side heats the air and the back side  
cools it. I played with it for a weekend and then retired it. The only  
reason it got built at all was because I had the (free) materials and  
was curious - and because I'd never soldered copper tubing and thought  
it'd be a good learning experience.

[ It /was/ a good learning experience. I learned that an oxy-acetylene  
torch was too hot for soldering copper tubing. :-) ]

 From that (and more recent) experience I think there must have been a  
strong air circulation inside the box - enough to overcome the friction  
of all those fins. My interest back then was simply in seeing if my  
conceptualizations matched up with the real world. I decided that they  
did and moved on to more interesting projects.

Both panels went into the trash. :-)

--  
Morris Dovey
http://www.iedu.com/Solar/  

Posted by Ecnerwal on February 14, 2013, 3:36 pm
 
Nah, you just have to use the right flame. A long, soft (fuel-rich)  
feather - you never get the cone involved, just the feather.  
Comparatively expensive, but quite effective.

--  
Cats, coffee, chocolate...vices to live by
Please don't feed the trolls. Killfile and ignore them so they will go away.

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