Re: Solar powered cooling
Zeolites are commonly used today in the "oxygen generator" machines that supply oxygen without needing tanks. And the same unit, which discard nitrogen as a waste gas, is plumbed "backwards" to make the nitrogen generator that the auto shops have gone crazy about for nitrogen filling tires at obscene prices. So, yes, common and proven technology.
As is ammonia refrigeration, even used on the International Space Station today. The problem being that ammonia is highly corrosive and if there's a leak, your eyes, throat, and lungs may be burned out before you can call for help.
So, great stuff, great potential, but there's a reason it has fallen out of favor except for commercial and industrial users.
Heat, swamps, alligators, mosquitoes...this is God's way of saying "Go play golf somewhere else."