Combined air and hydronic solar heater?

[drew4justice]

I've finished my prototype solar air heater and now I'm looking at creating a permanant, 6 foot X 12 foot unit but I'm thinking about snaking some copper inside as well.

I'm wondering if anyone's found success creating a combined solar and water heater?   I searched around and only found one example but it was small and contained no imperical data that I found to be useful.

Has anyone tried pulling the hot air out of thier solar water heater, or is that too counter-productive?  I would imagine that if the collection unit were large enough that it could be done properly?

Thanks for entertaining the question.

[electrondady1]

i don't recall seeing one that did dual duty.
but it you placed the copper tubes in the valleys between the air ducts it seems doable
maybe it wont give any more Btu's but you could work both systems/

[ghurd]

CmeBrew did one a while back...
http://fieldlines.com/board/index.php/topic,130264.0.html
G-

[drew4justice]

Thanks G, and congrats on hitting 300,000 miles!    
Hope all is well...