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• W4293766981 startingPage "119207" @default.
• W4293766981 abstract "The optimal cooling control of data centers (DCs) relies on the thermal model to simulate and accurately evaluate the temperature distribution of the computer room. Data-driven thermal modeling methods have been widely used in the thermal management of DCs. However, few existing works have comprehensively compared and analyzed the predictive performance and adaptability of various data-driven thermal models. In addition, most of the proposed thermal models are for temperature prediction in steady-state scenarios of DCs, ignoring the study of thermal changes in transient scenarios. Therefore, this work builds a CFD model of a typical data center as a verification platform to compare the temperature prediction performance of six machine learning (ML)-based thermal models (SVR, GPR, XGBoost, LightGBM, ANN, LSTM) in steady-state and transient-state scenarios. For steady-state scenarios, we also explore the impact of sample size, physical layout reconfiguration, and airflow pattern on performance to evaluate the adaptability of the thermal model. For transient scenarios, we design four cooling failure scenarios to verify the ability of the proposed thermal model to capture the dynamic thermal changes of the computer room. Numerous numerical simulation results show that the XGBoost-based and LightGBM-based thermal models outperform other ML models in both steady-state and transient-state scenarios, with prediction error RMSE is less than 1.0 ℃, and the time overhead is less than 10-3 s. In addition, both thermal models are robust to physical layout reconfiguration and poor flow patterns." @default.
• W4293766981 created "2022-08-31" @default.
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• W4293766981 date "2022-11-01" @default.
• W4293766981 modified "2023-10-14" @default.
• W4293766981 title "Thermal prediction for Air-cooled data center using data Driven-based model" @default.
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• W4293766981 doi "https://doi.org/10.1016/j.applthermaleng.2022.119207" @default.
• W4293766981 hasPublicationYear "2022" @default.
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