Immersion cooling is a thermal-management technique in which electronic hardware is submerged directly in a thermally conductive but electrically insulating dielectric fluid to dissipate heat. It offers far higher heat-transfer efficiency than air cooling, enabling denser deployments and lower cooling energy overhead. The technique is widely adopted in high-density data centres and cryptocurrency-mining facilities.
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- Single-phase systems circulate fluid past heat sources while two-phase systems exploit boiling and condensation for higher flux. By cutting cooling power and enabling waste-heat reuse, immersion cooling improves power-usage effectiveness, though it raises capital cost and fluid-handling and maintenance complexity.