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Using Heat to Increase Cooling

Using Heat to Increase Cooling. How New Cooling Technologies for Data Centres Can Increase Efficiency and Reliability. George Hannah BEng (Hons) CEng MIMechE. Product Development Director. Contents.

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Using Heat to Increase Cooling

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  1. Using Heat to Increase Cooling How New Cooling Technologies for Data Centres Can Increase Efficiency and Reliability George Hannah BEng (Hons) CEng MIMechE Product Development Director

  2. Contents • High Temperature Operation - Problem or Opportunity?- Air Containment – Why is it so important?- The Compressed Hot Aisle – Review- Hot, Compressed Hot or Cold Aisle – Which is Better?

  3. Cooling 1.75 million tonnes CO2 £385,000,000 a year Energy Use and Data Centre Heat Management 2.8%

  4. Data Centre Power Consumption Space & energy Demand Growth 2010-2015 (estimated): United Kingdom Indexed growth High density 2020 130 Power 125 Space 120 28.5% in next 5 years 115 110 105 100 2010 2011 2012 2013 2014 2015 Source: DCD

  5. High Temperature Operation - Problem or Opportunity?

  6. The Second Law of Thermodynamics “The second law states that spontaneous natural processes increase entropy overall, or in another formulation that heat can spontaneously be conducted or radiated only from a higher-temperature region to a lower-temperature region, but not the other way around.” TH TC Increasing Entropy TW

  7. ROOM = 20 - 27°C ROOM RACK Increasing Opportunity CPU RACK = 28 - 47°C Increasing Opportunity CPU = 60 - 100°C Increasing Temperature = Increasing Opportunity

  8. 2kW 8kW 31kW 28 ºC 35 ºC 47 ºC Server Technology Development Discharge Air – Increasing Temperature Capacity – Increasing Density

  9. ASHRAE – TC 9.9 Thermal Guidelines “TC 9.9 obtained informal consensus from the major commercial IT equipment manufacturers for both recommended” and “allowable” temperature and humidity ranges and for four environmental classes,…..”

  10. ASHRAE – TC 9.9 Thermal Guidelines

  11. ASHRAE – TC 9.9 Thermal Guidelines Increasing Opportunity

  12. 35+ Capable Cooling system Capacity (kW) ! 16 18 20 24 26 28 Room temp ºC Data Centre Temperature ºC ASHRAErecommended 27 22 Conventional 0

  13. № CRAC units for 800kW CRAC unit CRAC unit CO2 £ Room temp ºC Rising Temperature and Cost Savings 300,000 kgCO2 200,000 kgCO2 Running costs £63,000 £42,000 12 8 22 27

  14. Air Containment –Why is it so important?

  15. Mixing of Air Airflow Management

  16. - The Compressed Hot Aisle – Review

  17. COLD AISLE COLD AISLE HOT AISLE Traditional Hot Aisle Containment (HAC) CRAC ICT Cabinet

  18. ECHO Chilled Water CRAC’s ECHO Racks ECHO Active Cabinet Exhaust ECHO Free Cooling Chiller Solution A – Compressed Hot Aisle – ECHO

  19. COMPRESSED HOT AISLE COLD AISLE COLD AISLE Solution A – Compressed Hot Aisle – ECHO CRAC ICT Cabinet

  20. Solution B – Compressed Hot Aisle – OnRak

  21. COMPRESSED HOT AISLE COLD AISLE COLD AISLE COLD AISLE Solution B – Compressed Hot Aisle – OnRak

  22. - Hot, Compressed Hot or Cold Aisle – Which is Better?

  23. Hot Aisle vs. Cold Aisle vs. Compressed Hot Aisle * = ECHO System

  24. Questions?

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