CFD Investigation of Airflow Management in a Small Container Data Center

Wenxiao Chu, Chi Chuan Wang*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

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%.

Original languageEnglish
Article number8712563
Pages (from-to)2177-2188
Number of pages12
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Volume9
Issue number11
DOIs
StatePublished - Nov 2019

Keywords

  • Airflow management
  • container data center
  • nonuniform perforated tiles
  • rack flow uniformity index

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