Electricity-free Stanford system cuts cooling costs by beaming heat into space

Heat naturally flows from hot things to cold things, and since there are few places colder than the vacuum of space, that’s a great place to try to beam excess heat. Over the last few years a Stanford team has been developing a roof-mounted system that can cool a building by doing just that, and the latest test of the technology has managed to use solar panel-like devices to cool water without requiring any other energy source.

Michael Irving

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