Is Linus's watercooling room terribly designed?
I've only seen the pics from the end of the wan show, but here are some thoughts:
1) If you calculate the surface area of the copper used, they basically just installed a giant copper radiator full of hot water in the the room. With low pressure they could have used something like schedule 40 pvc or even pex with less heat bleed. To make matters worse, they're talking about polishing the copper instead of insulating the hot side of the loop.
2) Water will flow through the path of least resistance. If there are different components in different rigs, the flow with be differently restricted. Additionally, I saw no reducers in the image for individual drop-downs from the common line. That means that all things being equal, Linus's computer in the corner will be getting less flow.
3) I have a 100 year old hot water radiated house. Each radiator has a restriction valve to balance the flow, which does not appear to be in the design. Coupled with the fact that they stated that there will not be individual pumps it seems unregulated.
I could easily be wrong as I have no detailed info of the setup, but from the pics and they way they discuss it it seems poorly designed.
Let me know what you think.