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Flat Copper tank as preheater

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Posted by David Turner, Island Computers on October 5, 2007, 8:42 pm
 
We are building an extension this year with a south facing roof that will be
flat
Would I be dumb to put up a (copper or) steel tank painted black facing the
sun at say 30 degrees and use it as a solar preheater?
I guess it would need some kind of pressure valve somewhere in the system.

Tank I would think about 6' x 4' x 12' deep.

It's gotta help....

Comments?
David


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David B Turner
Island Computers US Corp
2700 Gregory St, Suite 180
Savannah GA 31404

T: 877-6364332 x201
Intl: 001 912 447 6622

E: dturner@islandco.com
F: 912 201 0402
W: http://www.islandco.com



Posted by Solar Flare on October 6, 2007, 2:28 am
 
If you get below zero C freezing temperatures, it may be a liability.
If you get cold nights you may waste much solar heat to re-warm it
each morning. The success is very climate dependent.



Posted by Jeff on October 6, 2007, 4:12 am
 Solar Flare wrote:

   Not to mention that that is a huge tank, it would take a lot to warm
1500 gallons.

   Google up solar batch heater. And consider using that tank as a solar
thermal store instead. I know I'd like to have it!

   Jeff


Posted by Lee on October 6, 2007, 10:08 am
 Hi,

I did some experimenting with a batch heater.   You can see my results
here:

http://tech.groups.yahoo.com/group/homebuiltsolarthermalenergy/message/10

I think you really need to enclose it and insulate.  You can clear
Polycarbinate roofing pretty cheap.   You also need to insulate the
top at night to prevent loosing all your heat ie lid.

Regards,


Lee.






On Oct 6, 6:42 am, "David Turner, Island Computers" <dtur...@no-spam-
islandco.com> wrote:


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