Step 5: Conclusison and improvements.
I have only had a chance to test it for about 10 minutes in the sun since i built it last night, but the air was pretty warm. (I hope to do measurements over the weekend, and see if putting some maze like baffles in the box can slow down the air and make it work any better.
In addition to baffles, Im thinking ov building a more rigid sides, and perhaps line the bottom of the "bag" with matte black card board, to keep it from collapsing/flopping. and perehaps to keep it from loosing any heat out the back side.
I want to experiment with making this solar, so the fan only blows when the panel is in the sun. jsut replace the 2 9v batteries with a 12v or 3 5v solar panels.
I'm also interested in building a reversed thermostat, so it will turn off the fan if the temp in the box is below a threshold. (will outline this one as I figure it out)
I plan to test this one to bring a little winter warm into my workshop, but i may build more and bigger ones for my house and other places.
In addition to baffles, Im thinking ov building a more rigid sides, and perhaps line the bottom of the "bag" with matte black card board, to keep it from collapsing/flopping. and perehaps to keep it from loosing any heat out the back side.
I want to experiment with making this solar, so the fan only blows when the panel is in the sun. jsut replace the 2 9v batteries with a 12v or 3 5v solar panels.
I'm also interested in building a reversed thermostat, so it will turn off the fan if the temp in the box is below a threshold. (will outline this one as I figure it out)
I plan to test this one to bring a little winter warm into my workshop, but i may build more and bigger ones for my house and other places.
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