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Temperature differences are what drive heat engines, i.e. you need a hot and a cold(er) reservoir. A nice demonstration of this is a handheld Stirling engine, w
by antidesitter 8y ago
Temperature differences are what drive heat engines, i.e. you need a hot and a cold(er) reservoir. A nice demonstration of this is a handheld Stirling engine, which you can power by placing ice at the bottom (since it’s colder than the surrounding environment).
- ams6110 8y agoOkay, but technically you're storing the energy in the environment, not in the cold reservoir. Maybe a distinction not worth making.