this post was submitted on 25 Jun 2026
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However, radiators in your car are also effective due to a constant airflow over them as they are moving. Datacenters don’t move, so what will help that transfer?
My car has this ancient technology called a "fan" to move air over the radiator when its running but not moving.
Wait....do you think no air is pushed over the radiator without it moving? Clutch fans and electric fans run when you're stuck in traffic or idling. They turn on or off when the tstat tells them to (minus clutch fans that run off the engines own power).
My point was more about forced airflow, whether it be the movement of the car (less use of energy, as you’re using the motion of the air to provide airflow) or if you’re sitting still you have those fans, which are a power draw. In the case of a DC, you’d always have to have a fan to do what a car does passively. So that increases, cost, energy use and complexity.
Most DC builders are avoiding closed loop systems already as they’re more expensive.
Being bigger. They don't move so they can be huge.