Why solar heater?
- first, to see how efficient can be that "crazy solar"
- to do something with my collection of empty beer cans (so... this is when one drink beer and throw away empty cans to the garage, I had almost 500 empty beer cans, and to do this solar I needed exactly 286 cans)
Now, description, how to build such kind of Beer Can Solar Heater :-)
Very first step: Temperature measurement, hmm... not bad...
