What is Immersion Cooling?

Immersion cooling, also known as liquid immersion cooling, is the practice of submerging computer components (or entire servers) in a liquid that conducts heat but does not conduct electricity (dielectric coolant).

Liquid immersion is a common method for cooling large power distribution components such as transformers. This method is still rarely used for cooling IT hardware, but it is slowly gaining popularity in innovative data centers around the world. IT hardware or servers cooled in this way do not require fans, and the heat exchange between the hot coolant and the cold water circuit is usually through a heat exchanger (i.e. heater core or radiator). Some extremely dense supercomputers use large liquid-to-cool liquid heat exchangers to dissipate heat.