Thermodynamics in Immersion Cooling

is vital in immersion cooling, but what is it and how does it work? Today, this article details how the process works in Box Technology Immersion Cooling System and how this can help achieve better performance than other cooling technologies.

What is Thermodynamics?

Thermodynamics is the study of the relations between heat, work, temperature, and energy. The laws of thermodynamics describe how the energy in a system changes, how thermal energy affects matter and whether the system can perform useful work on its surroundings. Historically, thermodynamics developed out of a desire to increase the efficiency of early steam engines.

Thermodynamics in immersion cooling

How is heat captured in the immersion tank and driven away from the server’s heat-generating components?

This picture(Take 40KW Immersion Cooling Box for example) shows the path of heat through the tank to the cooling distribution unit, which is then circulated through the fluid to disperse it to the outside.

The liquid enters the tank at low temperatures and as it is heated by the IT components. When the liquid is heated, it becomes less dense. It flows upward driven by changes in density (Dense water sinks below less dense water).

The coolant is then collected on the top surface and cooled inside the cooling distribution unit before being transported to the tank.


Our immersion cooling systems are designed to optimize their flow interaction with the server and to efficiently remove heat from the chips.

The Advantage of Thermodynamics in immersion cooling

The performance of the heat flow from the chip to the surrounding media is measured by thermal resistance. Under CPU operating conditions, the resistance between the Box Technology Immersion Cooling System’s enclosure and the media is less than that of air. It can improve performance, save energy and extend life.

As you can see, thermodynamics helps achieve many of the key benefits of immersion cooling. If you are interested in our Box Technology Immersion Cooling system, please feel free to contact us at

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