Liquid cooling: why liquid is the future of data centers and AI

For decades, data centers were cooled with air: precision air conditioning, raised floors, hot and cold aisles. It worked. But artificial intelligence changed the rules. A single rack of AI servers can dissipate as much heat as a dozen traditional racks, and air simply cannot remove that heat fast enough.

That is where liquid cooling comes in. Water — or a dielectric fluid — carries heat many times better than air. By bringing the liquid directly to the components that run hottest (or even submerging the servers), you can cool densities that would be impossible with fans alone. The result: more computing in less space, less energy spent moving air and the possibility of reusing the heat.

There are three main approaches. Direct-to-chip, where cold plates carry the liquid right on top of the processors. Immersion, where servers are submerged in a special fluid that does not conduct electricity. And hybrid rear-door schemes, which cool the air just as it leaves the rack. Each has its niche depending on density, budget and existing infrastructure.

For anyone planning a data center, a computing lab or a server room that will grow, the cooling decision must be taken early: it determines the plumbing, the mechanical space and even the structure. Designing it from the outset costs a fraction of what it costs to retrofit later.

At Navesco and Itermic we engineer thermal solutions for highly demanding processes, and liquid cooling is part of that conversation whenever density justifies it.