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> The Stanford team’s passive cooling system chills water by a few degrees with the help of radiative panels that absorb heat and beam it directly into outerspace. This requires minimal electricity and no water evaporation, saving both energy and water. The researchers want to use these fluid-cooling panels to cool off AC condensers.

https://spectrum.ieee.org/efficient-airconditioning-by-beami...

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Psh, that's not reasonable.

Outer space is like really really cold. What we need is a huge heat pump in outer space that pumps the planets heat out into deep space. All we need is a space-elevator style tube and we're good to go!

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You would need GIANT radiators. Space is cold but there is also allmost no cold material to transfer heat. So even with a space elevator .. not so easy.
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