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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

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

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

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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