Another type of non-electrical refrigeration is using an icebox in conjunction with an Icyball (http://en.wikipedia.org/wiki/Icyball http://en.wikipedia.org/wik

Another type of non-electrical refrigeration is using an icebox in conjunction with an Icyball (http://en.wikipedia.org/wiki/Icyball http://en.wikipedia.org/wiki/Icyball) You have to 'charge' the Icyball periodically with a bucket of water and a fire, but they can go well below freezing. I've never seen a modern incarnation of the idea, even though with some training it could probably be manufactured locally in countries with poor access to electricity. Maybe that is worth looking into... Here is a homemade version that might be the basis for a modern version: http://crosleyautoclub.com/IcyBall/HomeBuilt/HomeBuilt.html http://crosleyautoclub.com/IcyBall/HomeBuilt/HomeBuilt.html