The DW has a nice article about German scientists who are finding ways to use heat to cool things:

The principle of solar cooling, the so-called ammoniac-water absorption technique, has been known since 1810.

In Gladbeck, this idea has been extrapolated to the idea of using warmth from other processes such as the heat of baking ovens.

I vaguely remember a doctor once telling me that air-conditioning is the greatest invention of all time because it allows for so many health-related benefits. I suppose non-energy based cooling would be an even better invention, although it appears a couple hundred years have already passed since first discovery.