Also known as liquid submersion cooling, it is the practice of submerging computer compo-nents (or full servers) in a thermally, but not electrically, conductive liquid (dielectric coolant). Still rarely used for the cooling of IT Hardware, this method is slowly becoming popular with innovative datacenters the world over.
IT Hardware or servers cooled in this manner don’t require fans and the heat exchange be-tween the warm coolant and cool water circuit usually occurs through a heat exchanger (i.e. heater core or radiator). Some extreme density supercomputers such as the Cray-2 and Cray T90 use large liquid-to-chilled liquid heat exchangers for heat removal.
There are two types of Immersion Cooling: single-phase and two-phase.
From an operations perspective, Immersion Cooling simplifies datacenter commissioning and maintenance, thanks to the use of scalable building blocks on the compute and cooling side. The combination of our SmartPod platform together with dry-cooler or adiabatic cooling infrastructure for the secondary cooling loops, enables infrastructures that have much sim-pler requirements on the water loop and consume less energy and resources than any other type of cooling infrastructure. It’s also important to realize that an immersion solution should be considered infrastructure with an amortization schedule greater than 15 years in com-parison to technologies like Direct to the Chip Cooling where most of the costly components are embedded into the servers and thrown away once server life-time is met. This means an unprecedented PUE throughout the lifetime of the SmartPod technology.
From a practical perspective, deployment is quicker and simpler. Thanks to its density, Immersion Cooling gives the datacenter the possibility of deploying in prime locations at city centers and solving latency barriers without imposing restrictions on high chip densities of today’s compute requirements.
The economical benefits of Immersion Cooling go from numbers like 99% saving of electricity cooling costs, a reduction of 50% of the datacenter TCO (Total Cost of Ownership), zero water consumption and, for the first time open the possibility to reuse datacenter heat in a closed and perfectly efficient-system.
If you sense that right now, or in a nearby future, your datacenter or HPC infrastructure needs to…