Data Center Cooling Systems
Cooling removes the heat that IT equipment generates, keeping hardware inside safe operating temperatures. It is usually the largest source of energy overhead in a data center.
How Data Centers Are Cooled
Air cooling (CRAC/CRAH)
Computer room air conditioners/handlers push cool air through a raised floor; hot and cold aisle containment keeps supply and exhaust air separated.
Liquid cooling
Rear-door heat exchangers, direct-to-chip, and immersion move heat with liquid — far more effective for dense GPU racks than air.
Free & evaporative cooling
Outside air or evaporation reduces mechanical cooling load in suitable climates, lowering PUE.
In-row & close-coupled
Cooling placed near the heat source shortens air paths and handles higher density.
Cooling Is a Hardware-Risk Problem
A single hot spot can force the whole room to be over-cooled, wasting energy — or, if missed, push a rack past safe temperatures and shorten component life. AI racks concentrate heat, so the margin for error shrinks. Cooling decisions need device- and cabinet-level temperature data, not just a room average.
Connect thermal data to the hardware it protects
Sensaka collects inlet temperature, cabinet thermal data, and device health together, so cooling and IT risk live in one view.