I am collecting tin cans at the moment to make a solar air heater. You would think that a Solar air heater would take more technology to make than tin cans but you can do it. Aluminium is incredibly effective at heating up and then transferring that heat to air. It is a brilliant heat conductor. Basically you hole the bottom of the cans, then stach and silicone them together, to create a funnel. This is set in to a frame, up against an insulated back board with an aluminum sheet. Paint it all black and cover with glass, and seal.
It can heat air from about 5 to about 40 degrees, which is pretty incredibly given that it so readily made.
I am really looking for ward to making my solar heater. Here is a vid. to show what I am talking about. I have collected about 140 cans, mixed between beer cans and coca cola size ones. They all fit on each other which is the main thing. I have the timber, have found some glass, just got to get started now.
Posted on June 25, 2009
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