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Frequently Asked Questions
How do the options here differ from each other?
By how close the liquid gets to the chip.
At the rack, air still carries the last stretch.
At the chip, a cold plate takes most of the heat.
In immersion there is no air path at all.
Each step removes more load from the air system.
Each step adds plumbing inside the white space.
Why is an isolation boundary needed?
Facility water and IT fluid are not the same thing.
Cleanliness, pressure and temperature all differ.
Building water inside a server is unacceptable.
A heat exchanger keeps the two loops separate.
It also lets the IT loop run its own conditions.
Every liquid scheme needs one somewhere.
What is usually missing from an early budget?
The connection layer and the fluid.
Manifolds and couplings are counted late.
Fluid is treated as a fill rather than a consumable.
Both recur for the life of the installation.
Leak detection is a third common omission.
Price the loop, not only the cooling.
Does liquid cooling remove the need for air?
Only immersion does.
Cold plates capture most chip heat, not all.
Memory, drives and power stages still shed heat.
The air system stays and gets smaller.
Sizing it to zero is a common planning error.
Confirm the capture fraction with the vendor.
What makes liquid cooling save energy?
It tolerates much warmer supply water.
Warm water is available for far more of the year.
That widens free cooling hours dramatically.
Fan energy in the hall also falls.
A scheme fed cold water loses most of the benefit.
Set the loop temperature deliberately.
When does rack density force the decision?
When air can no longer reach the chip fast enough.
High density racks defeat containment eventually.
The limit depends on the hall, not a single number.
Rising processor power is moving that limit down.
Plan the transition before it is forced.
Retrofitting a live hall is the expensive path.
What should be agreed with the IT supplier first?
Which fluids the hardware is approved for.
Supply temperature and flow it expects.
Coupling type fitted to the equipment.
Warranty position on liquid contact.
Service procedure when a node is removed.
These decide the facility design, not the reverse.