Refrigerators – those blessed, buzzing boxes that keep our ice cubes frozen, our milk unspoiled, and our vegetables crisp – are serious energy hogs. In most homes, they use up more energy than any other appliance, and lead to unintended food waste. Meanwhile, in countries where energy is scarce, the lack of refrigeration can also lead to food waste.
According to an article (and awesome slideshow) on Co.Exist, it doesn’t have to be that way. Check out the excerpt below about a clay fridge by a company called MittiCool that does not require electricity, and read the whole thing on Co.Exist’s website:
Clay Fridges That Keep Food Cool Without Electricity
By: Ben Schiller
According to the U.N. Food and Agriculture Organization, the world wastes an astonishing 1.4 billion tons of food a year. This while plenty of people are still starving, and while many countries spend large percentages of their income to feed themselves.
Reasons for food waste differ from developed to developing worlds. In rich countries, it’s usually the food consumers who are responsible–i.e. people just throwing away excess food that they haven’t eaten or that spoiled before they could. In poorer nations, the problem tends to be in the supply chain. Because of poor refrigeration, food rots during transport or spoils at market stalls because it’s not sold quickly enough.
Made from clay and not needing any power to run, it keeps vegetables fresh for up to a week and can even store dairy, according to Mansukhbhai Prajapati, its Indian inventor.
The fridge is made of a porous type of clay from Gujarat, the region in India where Prajapati has his workshop. You feed water into a 5 gallon holding tank at the top and it gradually drips down through the material. On a warm day, the water evaporates, cooling the clay and leaving the contents inside relatively cold. Prajapati says the fridge is eight degrees Celsius less warm than room temperature.
“The fridge is not harmful for our health. It’s totally eco-friendly. And there is no maintenance like other refrigerators,” Prajapati points out. It’s also relatively cheap. Models cost about $50.