ASHRAE 2011 Liquid Cooling Guidelines for Data Centers.pdf

Data Center Education Series Cooling Systems Roger Schmidt Sept, 2011 Data Center Education Series ASHRAE New Thermal Guidelines for Liquid Cooled Data Processing Environments Roger Schmidt, IBM Fellow Chief Engineer - Data Center Energy Efficiency Prabjit Singh, STSM, Materials Lab Agenda ASHRAE’s New Liquid Cooled Guidelines Infrastructure for Supporting IT Equipment Other Guidelines - Wetted Materials Water Quality References One Year Anniversary of Data Center Ed. Series – some demographics Q A Data Center Education Series Cooling Systems Roger Schmidt Sept, 2011 Reason for New Liquid Cooling Guidelines Reduce number of chiller hours per year Design data center w/o chillers Very similar to Air Cooling Guidelines where customers wanted wider temperature and humidity guidelines US National Labs wanted to run all their HPC data centers w/o chillers being required for entire year as an option A Common Data Center Power Allocation IT Equipment (46%) Other (11%) HVAC Cooling (23%) HVAC Fans (8%) Lighting (4%) UPS (8%) Data Center Education Series Cooling Systems Roger Schmidt Sept, 2011 Liquid Cooling Loops for a Data Center Rack CDU Chiller Coolin g Tower Load Building Datacom Equipment Center Condenser Water System (CWS) Technology Cooling Systems (TCS) Datacom Equipment Cooling System (DECS Chilled Water System (CHWS) Reference: ASHRAE publication: Liquid Cooling Guidelines for Datacom Equipment Centers / X Data Center Education Series Cooling Systems Roger Schmidt Sept, 2011 Where are the Interface Requirements Defined? Raised Floor Foundation Building Return Supply Rack or Cabinet External CDU Defined Interface Requirements AIRAIR AIR AIR Raised Floor Foundation Building Return Supply Rack or Cabinet Internal CDU Defined Interface Requirements 4” copper pipe around perimeter - Supply return 5” steel pipe Mechanical Room -supply return 3” copper pipe through center -supply return30 to 36” raised floor Defined Interface Requirements D