this post was submitted on 03 Mar 2026
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I feel the need to point out that water cooling has an upper limit as well. If you get things hot enough, the water is going to flash into steam, at which point it’s going to decimate whatever system it’s in.
You can add additives to prevent that, but at some point it’s no longer “water”.
Reading this back, I suppose this is pedantism. But still.
Yeah, you control the flashpoint via pressure. the higher the pressure, the higher the temperature. However at some point it makes more sense to use a molten salt, an oil or a liquid metal to transport heat away.
If the temperature is near 20C to 100C there's nothing like flowing water.