Anybody out there know propane freezers?

[JWFITZ]

I am interested in attempting to build a solar powered freezer where properly oriented Fresnel lens provided the power to run an ammonia cooled freezer. At this point, I don't see any reasons which in theory it should not work. With a properly insulated box, it looks to me what it would be powerful and practical.

Here's a link to a explanation of the process for those that are unfamiliar.

http://home.howstuffworks.com/framed.htm...ption.html