this post was submitted on 30 Jun 2026
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Evaporative cooling happens but isn't the desired or main effect. Water rains down in the cooling towers to exchange heat with the air. Some water evaporates, but most heat is lost by conduction to air.
Now, if you're a dumb and cheap techbro, instead of paying engineers to properly size your cooling towers, you just buy whatever cheap HVAC CTs you can find, which will be quite undersized, and you'll run the fan at full blast, maximizing evaporative cooling to compensate for the lack of surface area for conductive cooling.