%0 Report %K energy efficiency %K cooling %K buildings energy efficiency %K data centers %K Modular %K cooling systems %K overhead %K scaleable %A Tengfang T Xu %D 2009 %T Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers %U https://isswprod.lbl.gov/library/view-docs/public/output/rpt76790.PDF %2 LBNL-2007E %8 06/2009