The solar fridge group is a Mechanical Engineering Senior Design project that seeks to design and build a prototype refrigerator that can be used off-grid in Haiti. This fridge will be designed to cost around $500 and have approximately 6 cubic feet of refrigeration space, and will most likely be a chemical absorption system.
Refridge techniques
http://en.wikipedia.org/wiki/Icy_Ball
http://www.nrjrealiste.fr/solaire/frigoHK.pdf
http://www.monash.edu.au/pubs/eureka/Eureka_95/fridge.html
For the wind chart of Haiti, see this: