Conjugate Heat Transfer Modeling of a Cold Plate Design for Hybrid-Cooled Data Centers

Aras Dogan, Sibel Yilmaz, Mustafa Kuzay, Dirk-Jan Korpershoek, Jeroen Burks and Ender Demirel ()
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Aras Dogan: Design and Simulation Technologies Inc., Eskisehir 26480, Turkey
Sibel Yilmaz: Design and Simulation Technologies Inc., Eskisehir 26480, Turkey
Mustafa Kuzay: Design and Simulation Technologies Inc., Eskisehir 26480, Turkey
Dirk-Jan Korpershoek: Blockheating B.V., Terweijerweg 25, 6413 PC Heerlen, The Netherlands
Jeroen Burks: Blockheating B.V., Terweijerweg 25, 6413 PC Heerlen, The Netherlands
Ender Demirel: Design and Simulation Technologies Inc., Eskisehir 26480, Turkey

Energies, 2023, vol. 16, issue 7, 1-21

Abstract: Liquid-cooled servers can be deployed to reduce the energy consumption and environmental footprint of hybrid-cooled data centers. A computational fluid dynamics (CFD) model can bring extremely useful insights and results for thermal simulations of air- and liquid-cooled servers in a single environment. In this study, a conjugate heat transfer (CHT) numerical model is developed and validated with experimental data to simulate heat transfer from the CPU to the air and cold plate considering the effect of thermal paste. The cooling performance of an in-house developed cold plate design is thoroughly investigated via the validated CHT model. A dataset containing one hundred samples of various flow, thermal and workload conditions was generated using the Latin hypercube sampling (LHS) method, which was further utilized in the series of CHT simulations. Finally, a novel empirical equation is proposed for the prediction of heat transfer from the CPU to the air. The accuracy of the proposed equation is confirmed by comparing estimated and simulated results for a test dataset. A thermal analysis of a rack containing air and liquid-cooled servers is performed using the presented approach. The simulation results reveal that the proposed compact model can be used reliably for the thermal simulation of a hybrid-cooled data center.

Keywords: data center; waste heat; conjugate heat transfer; cold plate; open compute project; OpenFOAM (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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