DIY Pop Can Solar Air Heater

Post image for DIY Pop Can Solar Air Heater

by Tim Fulton on October 24, 2011

Forum member Madmike recently joined the forum with the announcement that he was just finishing up making a solar hot air panel

solar hot air panel

To punch holes in the cans he used a 1-1/2″ hole saw and a drill press on the bottom of the cans. For the top of the cans he simply took a tin snips and bent the fins at an angle to help create some turbulence which will promote heat transfer to the air.

The panel is still getting tweaked now with a larger and higher flow fan to get the outlet temperature down a bit and increase the efficiency (less heat lost to the environment). To control the fan he is simply using a snap disc thermal switch that turns on at 110F and turns off at 90F. To prevent backflow through the collector at night he is using a dryer damper.

For more details on the project see Madmike’s forum thread.

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