Graph-based modelling and simulation of liquid immersion cooling systems

• Currently, most of the existing data centers use chilled air to remove the heat produced by the servers. However, liquids have generally better heat dissipation capabilities than air, thus liquid cooling systems are expected to become a standard choice in future data centers. Designing and managing these cooling units benefit from having control-oriented models that can accurately describe the thermal status of both the coolant and the heat sources. This manuscript derives a control-oriented model of liquid immersion cooling systems, i.e., systems where servers are immersed in a dielectric fluid having good heat transfer properties. More specifically, we derive a general lumped-parameters gray box dynamical model that mimics energy and mass transfer phenomena that occur between the main components of the system. The proposed model is validated against experimental data gathered during the operation of a proof-of-concept immersion cooling unit, showing good approximation capabilities. 

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Energiteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Energy Engineering (hsv//eng)

Nyckelord

Cooling; Graphic methods; Liquids; Mass transfer; Thermoelectric equipment

Approximation capabilities; Control oriented models; Energy and mass transfer; Graph-based modelling; Heat dissipation capability; Heat transfer properties; Liquid cooling systems; Liquid immersion cooling

Cooling systems

cooling; design; dielectric property; dissipation; experimental study; heat transfer; mass transfer; model validation; parameterization

Publikations- och innehållstyp

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