On 2026-03-12 14:02, rusty carruth via PLUG-discuss wrote:
On Thu, 2026-03-12 at 16:37 -0400, Stephen Partington via PLUG-discuss
wrote:
I would like to see that no water DC. to me, that is the way to go at
this rate of expansion. Most of those DCs are probably using water
tower evaporation cooling. which is why they consume the water rather
than recycle it.
I've always wondered about the efficiency of water cooled vs 'normal'
AC units. So, I did a search, and apparently water cooled used to be
more efficient (assuming plenty of water available), but not so much
any more.
When I was in the first grade my school had a water cooled A/C. It is
my understanding this is optimal.
https://www.araner.com/blog/water-cooled-systems-and-air-cooled-systems
has a comparison (they make both systems)
However,
https://www.energyresourcesgroupinc.com/erg-bulletin/air-vs-water-cooled-equipment/
says that water cooled can be 2x (or more) efficient than air-cooled.
And then there's this
https://noraideas.com/air-source-heat-pump-vs-water-source-heat-pump/
which looks like slightly different technology than water tower-based.
So, now I know - it depends ;-)
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