On: Off-Grid, Solar-Powered, Zero-Battery Refrigerator

[Baeocystin]

I wonder if, for the stated design goal of a zero-battery solution, something like a solar thermal concentrator + Einstein–Szilard refrigerator would work. Something as simple as an icyball or two kept charged via the solar thermal system might work as well.

https://en.wikipedia.org/wiki/Einstein_refrigerator

https://en.wikipedia.org/wiki/Icyball

[abdullahkhalids → Baeocystin]

People have tried with a regular heat source. But a solar concentrator could work .https://en.wikipedia.org/wiki/Vaccine_cooler