Say What? wrote:

| Great idea but why not dispense with the fancy colors and go with
| "flat black?" That way you could park the barrel outside the shop
| on the wall with the southern exposure and plumb it through the
| wall, using the barrel as a solar collector? With your DC and
| filter back inside the shop you could be re-heating all that air
| instead of just moving it around. g

Thanks, but (seriously) flat black paint isn't adequate for efficient
absorption of solar radiation.

The setup you describe probably /would/ work well for wintertime
air-conditioning, though. 8-)

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/