Abstract
In order to maintain a stable thermal environment of the data center, air-conditioning systems for the data center are in high energy consumption operation state yearly. Airflow organization in a data center impacts the cooling effectiveness of the air-conditioning systems significantly. This paper investigated a small-scale data center by combine of measurement and CFD simulation. To supply accurate boundary conditions, site measurement was conducted to validate the simulation results. In this paper, three optimization approaches of airflow organization were proposed and simulated by CFD software. The cooling performance of these approaches were compared by the temperature of 16 points on the same plane (Z=1.5m) in the room. The results indicated that cold aisle closure could eliminate by-pass airflow but also worsen thermal environment. Setting air return on both sides of hot aisle got most significant improvement in cooling performance. The temperature of hot points could be decreased by 0.5~5°C.
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