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I’m pretty sure that “closed loop” in this context would mean that the water is recirculated and not evaporated.

From the links in the article, it looks like this DC runs giant heat exchangers to dump the heat to air.

> air cooling drawing tons of electricity

Reference? What's the efficiency of the systems like used here?

Air cooled chillers are generally used in a closed loop system. A coefficient of performance (COP) of 4 is reasonable to expect, which means 1 watt of electricity to remove 4 watts of heat.

I could vibe code 1:6