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Freeman Dyson devised an a/c system at Princeton that involved using snow making machines to generate a large pile of ice in an insulated shed during the winter

Freeman Dyson devised an a/c system at Princeton that involved using snow making machines to generate a large pile of ice in an insulated shed during the winter (with the doors open) and circulated coolant through the ice pile and the buildings in the summer (with the shed doors closed).

pfdietz 5y ago
Freeman Dyson wrote about it, but it was Ted Taylor who did it, I think.
aitchnyu 5y ago
There is a passive ice pile technique, but for producing water https://en.wikipedia.org/wiki/Ice_Stupa https://en.wikipedia.org/wiki/Ice_Stupa