I am looking to watercool an entire (small) cluster, and so the requirements are pretty monster compared to just a gaming rig.
My question is what the pipe/pump situation is like for this.
Ie, what diameter to choose to get a decent flow rate (1-2 gpm) without too crazy of a pump. What kind of pressures would I need to push that much head?
Problem is that space is a big issue, so i'm looking for the thinnest tubes I can get away with (3/8"? 1/2"?).
Also, I'm planning to use several pumps in series to boost pressure, but I also wish to have failover. Is that possible? I'm guessing that some types of pumps (centrifugal?) would let water flow through them easily when they're broken.
The radiator, too, is gonna be a
. Any rules of thumb for radiator size, fan size, fan speed, etc? The radiator can't get too huge, and the number of (quiet!!) fans I can fit is also an issue. I did a quick calculation and to cool 1kW you need to heat 250 CFM of air by 10C. That scares me a little.
The biggest criterion is size, followed by reliability and noise. Cost... not so much.