this post was submitted on 15 Sep 2025
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They need to use very pure water, and it evaporates completely, so it must be continually replenished.
Need is a strong word. There are much more efficient ways to cool data centers. They've just chosen the most wasteful way because it's the cheapest (for them).
To be clear: I’m saying that an ongoing supply of pure water is a requirement of the cooling method they chose, not that they were required to choose that method. The poster I was replying to asked how water could actually be consumed and not just reused.