Smart Containment
Extending the Life of the Data Center
The Cooling Trend


         Over provisioned                Contain               Monitor & Control
Energy




         W...
Air Mixing Lowers Efficiency




• Low -T impairs CRAH efficiency
• Capacity unnecessarily limited
• 60% of cold air is wa...
Containment Stops Mixing




• High -T boosts CRAH efficiency
• Reduces operating expenses
• Capacity expands
• Eliminates...
How Does Containment Work?


• Airflow isolation barriers prevent hot return
  air from mixing with cold supply air
• The ...
Containment Systems

        Vertical Panels




                  Horizontal
                  Panels
The Great Debate –
                         Which Aisle Do You Contain?




Hot Aisle                            Cold Aisl...
Containment Architectures




                   AC   RACK   RACK
AC   RACK   RACK
                                      A...
Smart Containment:
                    The Cooling Efficiency Stack




        MONITOR             CONTAIN               ...
Monitor & Control

Wireless Sensor Network

                                Adaptive Control Measures
                    ...
Two Sets of Gains:
                              1) Containment and 2) Control

          Baseline              After Cont...
Published Case Studies

LBNL
Fan speed reduction of 75%
12% reduction in cooling energy


Altera
Server inlet variance red...
Compelling ROI



• Energy savings from reduced fan
  speeds and lower demand on
  chilled water plant
• Reduced heat rela...
Polargy, Inc.
256 Gibraltar Drive, Suite 155
Sunnyvale, CA 94089
888.816.8338
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Polargy Overview

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Introduction to Polargy's Containment Solutions

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Polargy Overview

  1. 1. Smart Containment Extending the Life of the Data Center
  2. 2. The Cooling Trend Over provisioned Contain Monitor & Control Energy Waste, but high margin for error Efficiency, but smaller margin for error Increased energy & capex costs driving change Yesterday Today Tomorrow Need new tools to closely couple cooling to demand
  3. 3. Air Mixing Lowers Efficiency • Low -T impairs CRAH efficiency • Capacity unnecessarily limited • 60% of cold air is wasted • Typical 3X over provisioned • Free mixing prevents tight supply control
  4. 4. Containment Stops Mixing • High -T boosts CRAH efficiency • Reduces operating expenses • Capacity expands • Eliminates hotspots • Isolated airflow enables tight supply control
  5. 5. How Does Containment Work? • Airflow isolation barriers prevent hot return air from mixing with cold supply air • The hot return air stays hot, increasing the return air temperature to the CRAH units • The -T across the CRAH increases which results in more efficient cooling • Makes the supply air temperature more uniform across the server inlets, improving reliability
  6. 6. Containment Systems Vertical Panels Horizontal Panels
  7. 7. The Great Debate – Which Aisle Do You Contain? Hot Aisle Cold Aisle • Keeps -T highest by • More direct path of cold preventing cooling of the air to servers vs. hot air • Positive air pressure • Comfort in open area • Comfort in hot aisle • Switch gear • More deployment • Easy to balance zones options
  8. 8. Containment Architectures AC RACK RACK AC RACK RACK AC RACK RACK AC RACK RACK AC RACK RACK AC RACK RACK
  9. 9. Smart Containment: The Cooling Efficiency Stack MONITOR CONTAIN CONTROL • Temperature • Barriers above racks • Fan speed • Pressure • Doors on aisle ends • Set points • Humidity • Blanking panels • Chilled water flow • Power • Filling floor gaps • Economizer hours • Cooling plant • Plenum returns with • CRAH on/off ducted CRAHs
  10. 10. Monitor & Control Wireless Sensor Network Adaptive Control Measures • Automatic start/stop of CRAC units • Adjust variable speed fans • Change CRAC set points • Increase chilled water set points • Manage the usage of air side economizers
  11. 11. Two Sets of Gains: 1) Containment and 2) Control Baseline After Containment With Control C H H C C H H C • No containment • Cold aisle contained • Controlled CRAHs • High degree of air mixing • Higher -T • ASHRAE inlet temperatures • High inlet temperatures • Increased return temperatures • No change to CRAHs
  12. 12. Published Case Studies LBNL Fan speed reduction of 75% 12% reduction in cooling energy Altera Server inlet variance reduced from 14⁰F to 2⁰F ⁰ ⁰ 12.5% energy reduction Yahoo Supply air temperature increased 21⁰F 21% reduction in cooling energy Published by Accenture/Silicon Valley Leadership Group These are not Polargy projects
  13. 13. Compelling ROI • Energy savings from reduced fan speeds and lower demand on chilled water plant • Reduced heat related failures • Power utility rebates • More capacity out of the data center
  14. 14. Polargy, Inc. 256 Gibraltar Drive, Suite 155 Sunnyvale, CA 94089 888.816.8338
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