this post was submitted on 19 Sep 2024
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Net-zero emission goals went out the window with AI.

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[–] [email protected] 27 points 1 month ago (6 children)

Wait... What? The article seems to imply that the water is consumed, but it's referencing the water used in cooling loops.

[–] [email protected] 31 points 1 month ago (4 children)

Data centers don't have "water cooling loops" that are anything like the ones in consumer PCs. To maximize cooling capacity, a lot of the systems use some sort of evaporative cooling that results in some of the water just floating away into the atmosphere (after which point it would need to be purified again before it could be used for human consumption)

It also seems from what I can find like some data centers just pipe in clean ambient-temperature water, use it to cool the servers, and then pipe it right back out into the municipal sewer system. Which is even more stupid, because you're taking potable water, sending it through systems that should be pretty clean, and then mixing it with waste water. If anything, that should be considered "gray water", which is still fine to use for things like flushing toilets.

[–] [email protected] 5 points 1 month ago (2 children)

I would be really surprised if anyone is cooling data centres with city water except in emergency, that's so unbelievably expensive (could see water direct from a lake though but that had it's own issues too). I recall saving millions just by adjusting a fill target on an evaporative cooling tower so it wouldn't overfill (levels were really cyclic, targets weren't tuned for them), and that was only a fraction of what it'd have cost if we'd've used pure city.

[–] [email protected] 3 points 1 month ago

My work drilled water wells for evaporative cooling in their datacenter.

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