We Need People Like You…
March 21, 2011 § 5 Comments
I just have to commend inventor, Emily Cummins, on her brilliant design of this sustainable mobile refrigerator. She explains it so much better than I ever could, so this is how it works:
“We can’t continue to rely on electrical appliances powered by fossil fuels, so I tried to come up with an alternative: a sustainable fridge which is ‘powered’ by dirty water. My prototype consists of two metallic cylinders, one inside the other, between which a locally-sourced material such as sand or wool is packed tightly before being soaked with water. When the fridge is placed in a warm environment, the sun’s energy causes the outer part of the fridge to ’sweat.’ Water evaporates from the sand or wool and heat energy is transferred away from the inner cylinder, which therefore becomes cooler. The design is ideal for use in the developing world because it doesn’t require electricity and can be built using barrels, spare car parts and ordinary household materials. Unlike previous pot-in-pot coolers, the contents are kept dry and hygienic because the water does not come into contact with the product.”
She has also set up a website, MyKindaCrowd, connecting students to businesses and creating ‘challenges’ for students to complete and show their talents in order to create professional links within the business world. Emily also gave away her refrigerator design plans to townships across Southern Africa to enable people to build their own fridges. Wow!