This is a pretty cool article - basically this team from San Jose State have come up with a way to harness sunlight and some chemical reactions to make. Now that really is the most energy efficient ice maker around.
Intended for disaster relief situations, refugee camps, and developing nations the bright minds at San Jose State University have created an ice making machine that uses the heat from sunlight to power a chemical reaction. What happens is the tubing (or heat exchanger) is filled with a liquid refrigerant material. The convex reflective panel focuses light and heat energy from the sun onto the piping which vaporizes the refrigerant. So far, no ice. When the sun goes down however the vapor goes through massive heat loss due to pressure differences and roughly 14 pounds of ice are produced depending on the design.
Go on over to GreenUPGRADER to read the rest of the ice making process.
