free energy refrigerator Archives – The Green Optimistic green tech news, since 2008 Thu, 28 Jun 2012 14:52:01 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Fridge Powered by Heat Invented at Stanford https://www.greenoptimistic.com/fridge-powered-by-heat-stanford-20081210/ https://www.greenoptimistic.com/fridge-powered-by-heat-stanford-20081210/#comments Wed, 10 Dec 2008 20:14:30 +0000 https://www.greenoptimistic.com/?p=1333 We have been talking a while ago about refrigerators that needed no electricity or that were powered by the Sun, through evaporation, helping poor countries with a cool place to keep their food. Now, venture capitalist Adam Grosser teamed up with some Stanford scientists to create refrigerator that really doesn't need to be plugged in anything but the Sun.

The post Fridge Powered by Heat Invented at Stanford appeared first on The Green Optimistic.

]]> https://www.greenoptimistic.com/fridge-powered-by-heat-stanford-20081210/feed/ 8 1333 Pot in Pot Refrigerator: Keeps Things Cool with no Electricity https://www.greenoptimistic.com/pot-in-pot-refrigerator-no-electricity-20080708/ https://www.greenoptimistic.com/pot-in-pot-refrigerator-no-electricity-20080708/#comments Tue, 08 Jul 2008 12:18:20 +0000 https://www.greenoptimistic.com/?p=390 Do you know this man? I didn't either. It not news anymore, but I was surprised when I read what Mohammed Bah Abba accomplished to do. He invented a food preserving system (aka "refrigerator") for the people in Nigeria. Until his invention they had to sell their crops immediately and have their children hawking all day for food instead of going to school.

The post Pot in Pot Refrigerator: Keeps Things Cool with no Electricity appeared first on The Green Optimistic.

]]> https://www.greenoptimistic.com/pot-in-pot-refrigerator-no-electricity-20080708/feed/ 4 390