The Mitti Cool fridge from India is a new spin on an ancient design used to keep food cool. According to Virgin’s page on entrepreneurship, the Mitti Cool was designed in the wake of the Gujarat earthquake in 2001. Mansukhbhai Prjapati, a local clay artisan who was affected by the quake, designed the fridge, we’re assuming, as a response to the infrastructure damage that followed the quake. It’s about the size of a mini-fridge you’d find in a college dorm room.
Virgin explains how it works:
“The refrigerator works by using the principle of evaporation. Water from the upper chamber drips down the side and evaporates; removing heat from the inside and leaving the chamber cool.
“Requiring only water to work, the MittiCool refrigerator is capable of keeping food, vegetables and milk fresh for days, using only natural resources. The product is one of a number developed in India by Mansukhbhai Prajapati, who has taken his family’s long tradtions for clay craftsmanship and applied to off-the-grid innovation.”
The design is a spin on the zeer, a clay pot cooler that may have originated in Egypt around 2,500 BC. If you’d like to try the design out for yourself, we found an engineering page that explains the basics.
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10 thoughts on "Technology | Mitti Cool, a Clay Refrigerator that Runs on Evaporation"
What a great product…I have been trying to reduce the amount of energy I use, and this just fits in so well with that…. Can they be delivered to the United Kingdom? Pretty please :)?
I just “discovered” this story on YouTube. Wow, great innovation that could help so many homeless people have better food options as this looks very portable.
The settlers in Africa used to make a cooler on the same principle,basically a room with chicken mesh double sides and charcoal packed between or just hessian sack on the sides with a water tank on top.
Works a treat.
Could u share more details? Some simple drawing and post it on YouTube would be great
Can this product be purchased in the US?
I Love this concept – from my childhood with the polystyrene fridges for caravanning! And I would really love one for my tack room (without electricity) but don’t seem to be available in UK
Make one with a clay pot in a clay pot ,sand in between,wet the sand cover the inside pot with a fairly air Tite lid making sure sand area can breathe to evaporate,may want to water seal the inside pot so no water build up inside🌞
I believe if archeologists were to look again at the many rock cut structures around the world with fresh eyes they would find these are the purpose of some of the storage bins carved in these structures. Line them with sand and clay inserts add water and viola! Evaporative cooler.
Excellent point, this was more widely used than scholars allow.
Where can I buy it from? can it be shipped to the USA? Thanks !