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Electricity-Free Refrigerator

By Kim Robson:

 Indian entrepreneur Mansukhbhai Raghavbhai Prajapati has created a refrigerator that keeps food cool

without using any electricity. The Gujarat-based potter makes his natural MittiCool refrigerator entirely

from clay. It provides an electricity-free food storage alternative for people in rural areas who cant

afford conventional refrigerators or anyone who lives off the grid.

The MittiCool refrigerator uses the natural cooling effect of water evaporation. It can keep vegetables Mitticool-fridge mainfresh for up to a week and store milk for three days before it spoils. Water from the upper chambers drips down the side of the clay fridge, stripping away heat as it evaporates, leaving the lower chambers cool — a difference of up to 8 degrees Celsius from the ambient room temperature.

The water stored in the upper chamber can be used for drinking via a small tap on the front lower end of the chamber. Two shelves in the lower chamber are used for storing food: the first is used for vegetables and fruits, while the second shelf can be used for storing milk.

MittiCool has been enjoying media attention in India:

This affordable green appliance is available for between 2,500 and 3,500 rupees, the equivalent of $37 to $52 U.S. dollars. Unlike many conventional models that run on electricity, the MittiCool fridges clay environment is said to preserve the original taste of fruits and vegetables. It requires very little maintenance.

Prajapatis pottery studio makes a wide variety of household products, including a clay water filter that requires no electricity and produces up to ten liters of clean, cold drinking water. Unlike the solar water distiller we discussed a few weeks ago, this water filter doesnt require salt water or sunlight to work.

About Kim Robson

Kim Robson lives and works with her husband in the Cuyamaca Mountains an hour east of San Diego. She enjoys reading, writing, hiking, cooking, and animals. She has written a blog since 2006 at kimkiminy.wordpress.com. Her interests include the environment, dark skies, astronomy and physics, geology and rock collecting, living simply and cleanly, wilderness and wildlife conservation, and eating locally.

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