標題: | CFD Investigation of Airflow Management in a Small Container Data Center |
作者: | Chu, Wenxiao Wang, Chi-Chuan 機械工程學系 Department of Mechanical Engineering |
關鍵字: | Airflow management;container data center;nonuniform perforated tiles;rack flow uniformity index |
公開日期: | 1-Nov-2019 |
摘要: | In this paper, the cooling performance of a small container data center is numerically investigated. It is indicated that adjusting the plenum depth and placing baffles in the plenum can improve the airflow uniformity efficiently. On the other hand, the perforated tiles with low porosity of 25 also can significantly improve the air flowrate distribution by 88.9 with the severe pumping power penalty of 2.79 times. Hence, the layout of perforated tiles with nonuniform porosities is optimized with the fixed average porosity of 50, which can obtain almost absolutely uniform flowrate distribution in the cold aisle. In addition, the cold aisle containment (CAC) strategy is implemented, resulting in the improved rack cooling index (RCI) and supply heat index (SHI) to approach to 100 and 0, respectively. However, the intake flowrates still suffer from nonuniformity due to the bypass effect, thus a novel criterion named flowrate uniformity index (FUI) is proposed. Besides, the drawer-type layouts with the shifting distance ( $\delta$ ) varying from 0 to 200 mm are investigated, and the case with $\delta = 150$ mm shows the best improvement in terms of the standard deviation of FUI ( $\sigma _{\mathrm {FUI}}$ ). Moreover, the $\sigma _{\mathrm {FUI}}$ of the case with a three-layer drawer-type layout can be further improved by 45.8. |
URI: | http://dx.doi.org/10.1109/TCPMT.2019.2916017 http://hdl.handle.net/11536/153386 |
ISSN: | 2156-3950 |
DOI: | 10.1109/TCPMT.2019.2916017 |
期刊: | IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY |
Volume: | 9 |
Issue: | 11 |
起始頁: | 2177 |
結束頁: | 2188 |
Appears in Collections: | Articles |