by On December 9, 2019, Schneider Electric announced introducing industry’s first commercially-available integrated rack with chassis-based, immersive liquid cooling. Schneider view this as an important step to bring the benefits of immersion cooling to the mainstream market that is fully compatible with standard architectures. Immersion cooling promises lower operating costs, higher efficiencies, a smaller footprint, and fan-less operation. Schneider see that no other available technology that can have such a dramatic impact on energy efficiency.
Liquid cooling types:
Direct to chip liquid cooling – single-phase where the liquid coolant is taken directly to the hotter components (CPUs or GPUs) with a cold plate on the chip within the server as per below drawing:
Direct to chip liquid cooling – two-phase which is like the previous method, except that the fluid is two-phase which means the fluid changes from one state to another as per below drawing:
Immersive liquid cooling – IT chassis – single-phase where the liquid coolant is in direct physical contact with the IT electronic components. The servers are fully or partially immersed in a dielectric liquid coolant covering the board and the components, which ensures all sources of heat are removed as per below drawing:
Immersive liquid cooling – Tub – single-phase where the IT equipment is completely submerged in the fluid. With traditional IT racks, the servers are horizontally stacked from the bottom to the top of a rack. However, because this method uses a tub, it’s like laying a traditional rack of servers on its back as per below drawing:
Immersive liquid cooling – Tub – two-phase which is Just like the single-phase tub method, the IT is completely submerged in the fluid. The difference here is the two-phase dielectric coolant as per below drawing:
For full details refer to Schneider white Paper 265
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