Here’s a super, innovative way to convert a chest freezer into a highly, efficient refrigerator. (See PDF schematics here.)
My chest fridge (Vestfrost freezer turned into a fridge) consumes about 0.1 kWh a day. It works only about 2 minutes per hour. At ...
Check out this Zaragoza Solar hot water system used in a desert oasis town. They also have lots of other cool stuff like the solar heating system for pools.
The complete solar hot water system involves heat exchange between three liquids:
Solar collector fluid. The fluid whic ...
