Cooling Fluids | SVM 3001 – Viscosity Testing of Immersion Cooling Fluids

Kinematic viscosity at various temperatures is required for specification of IC fluids. Anton Paar’s SVM 3001 viscometer offers the perfect solution to determine viscosity profiles and the Viscosity Index from one measurement cycle.

Technologies such as artificial intelligence, 5G, internet of things, server clusters, cryptocurrency mining systems and many more have to handle lots of data and therefore need extremely powerful data centers. The high energy consumption and the footprint of such data centers should be minimized while the computing capacities need to be increased. High computational power is often realized by high density rack designs. But these devices produce heat and need a lot of energy for cooling. Traditionally, data centers and their components were air-cooled, but this technology can’t address these requirements any more.
Immersion cooling (IC) allows direct contact of electronic parts with a dielectric fluid for cooling. A dielectric fluid is an electrical insulator that is thermally conductive. These fluids offer significantly higher heat absorption capacity than air.
Acting as coolants, IC fluids must absorb, transfer and dissipate the heat of the electronic components. Their properties are relevant for safety, longevity and efficiency of the cooling system.

Besides many other parameters such as thermal conductivity, flash point, boiling point, chemical stability, material compatibility and others, viscosity plays a major role. Viscosity influences the heat transfer and the fluid flow as well as on the fluid pump requirements. Too high viscosity at lower temperatures may lead to irregular flow or in worst case to pump failure.

For this report, a manually filled SVM 3001 was used.

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