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Posted by SJC on October 16, 2006, 3:00 pm
 


  If you look at the makeup of the alloys here, there is not much difference.
  http://www.alufoil.com/products.htm
  You might have some of that between copper and aluminum, but the
Sunray Solar people use copper tubes and aluminum fins.
http://www.sunraysolar.com/fintubes.php


Posted by Jeff on October 16, 2006, 3:10 pm
 
SJC wrote:


   Thanks,

The guys over at Solkote said not to worry about elctrolysis between the
copper tubes and aluminum fins (I told him I was priming the copper and
he said not to bother).

Opinions?

   Jeff



Posted by SJC on October 16, 2006, 3:37 pm
 

  I think there has to be a difference in potential to cause a problem.
  The copper would have to be at a different potential that the aluminum
   to cause migration. I don't think just tubes and fins would have that.



Posted by Mike on October 17, 2006, 7:36 am
 Electrolysis will not be an issue if the aluminum or copper tubes are primed
with an etching primer or if the aluminum is anodized.
There has to be moisture present to cause the problem. There is always some
water vapor in the air that over some period of years will cause a problem -
but will considerably reduced if one of the surfaces is sealed.

Mike


spacing


Posted by Steve Shantz on October 15, 2006, 10:01 pm
 
Jeff wrote:

Try All Foils Inc.  I bought untempered foil for my staple up radiant
system.  Great people to work with.  They have about anything you want
for very good prices.  http://www.allfoils.com/

Steve


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