Appunti sulle Energie Rinnovabili
Passive Solar Heaters
Airmaze
The Air#Maze™ Passive Solar Furnace is a Metal Maze Matrix of 25 Recycled Tin Cans "floating" in Space! The Tin Cans are mounted in an artistic array in a window box 20 inches square and 4.5 inches deep.
http://www.heatstick.com/_AirMaze.htm
Also here: Airstick, to circulate air into a room, and other interesting stuff.
Solar Heater
http://www.youtube.com/watch?v=Jzxw1j-dzY4 http://www.youtube.com/watch?v=R9bBnRQWRro