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Green Data Center
High Density Cooling Solution
An Alarming Truth

 Commercial IT causes around
 2 % of global CO2 emission -

 just as much as world-wide air traffic!
[Gartner]
Global Datacenter Power Consumption

                         Equals 14 large power stations (1000 MW) !




„Estimating total power consumption by servers in the U.S: and the world”,
Jonathan G. Koomey, Februar 2007
Why Data Volumes Are Exploding:

 each and every company, authority, institute … runs a data center
 critical business processes don’t work without IT
 global economic growth
 new applications
 every new software release needs more resources
 communication via internet
 voice, radio, pictures, video, TV
 abundant data storage
 traffic, facility (…) control
 …
Up to 25 kW Load per Rack Today !
IT Infrastructure

          energy efficient server and storage units
          consolidation on high performance systems, blades e.g.
          virtual desktops / thin clients
          server- and storage virtualization
          dynamic IT




                                                                              Each Watt saved
                                                                              counts twice!



„In the data center, power and cooling costs more than the IT it supports”,
Christian L. Belady, Electronics Cooling, Februar 2007
A “Continuous Explosion” (I)
  “Continuous Explosion”




  [Netcraft]
The CIO Dilemma
 to guarantee performance and availability
 to keep cost under control
How Much Power Does Your Data Center Need?
The Power Bill is Your Best Consultant
Your Levers:

 IT Infrastructure
 - Server
 - Storage
 - Network


 Physical Infrastructure
 - Power
 - Cooling
50% of DC Power for Physical Infrastructure

          Electricity            Lighting, etc.
         Transformer/                 3%
             UPS
     Air     10%
  Movement
    12%
                                                                  IT Equipment
                                                                      50%
          Cooling
           25%


         The direction of energy efficiency

         Source: EYP Mission Critical Facilities Inc., New York
Conventional Cooling Reaches its Limits




   Source: ASHRAE 2005




   max. 5 (10)kW / rack -
   depending on dc design
Common situation in data centres


  Too cold
  Very high air flow rate
  Too much by pass air
  Recirculation
  Low air return temperature


 No compromise with reliability and availability
Green Data Center
Solutions
CoolFlex: open architecture
CoolFlex:
Benefits of CoolFlex




    •   Complete air flow for server cooling
    •   No by pass air
    •   Lower velocity
    •   Very low power consumption of CRAC fans
    •   Higher heat transfer due to higher temperature difference
    •   No hot spots
    •   Higher supply air temperature
    •   Higher free cooling ration
    •   More redundancy
CoolFlex, What to do
CoolFlex,


• Data Centre site assessment
• Create cold zones according to data centre layout
• Close all air leaking cut outs of the raised floor
• Separate cold and hot zone inside the server rack
• Add a roof top over the cold zone
• Add a door at the end of the aisle
Benefits of closed architecture: Knürr CoolTherm
                                 Knürr

 - minimal air circulation
 - short air flow path
 - highest delta T / air return temperature
 - highest coolant feed / return temperature
      free cooling
      chiller efficiency
  - up to 35 kW per rack
 - even cooling air temperature
 - no heat load to the room
 - rack individual adjustment / control
 - low noise emission
 - individual smoke detection / fire suppression
Energy Efficiency



       Ene
           rgy
               Ef   ficie
                            ncy




                    15 °C
     53,6°F                       64,4°F   75,2°F
Reduction of carbon dioxide
                                                                             Electricity    Lighting, etc.
                                                                            Transformer/         3%
                                                                                UPS
                                                                        Air     10%

 25 kW CoolTherm                                                     Movement
                                                                       12%
                                                                                                               IT Equipment
                                                                                                                   50%
                                                                             Cooling
                                                                              25%

   CoolTherm fan power consumption app. 4% of server head load
   App. only 20% of compressor usage of the chilled water plant
   Low water back pressure
Power usage          Traditional Data Centres                              CoolTherm 25 kW
                    acc. EYP Mission Critical Facilites                                    Knürr
               Power input    Power per year   CO2 per year   Power input        Power per year              CO2 per year

Server           25 kW        219 MWh/a           120 t/a       25 kW             219 MWh/a                    120 t/a
Air Movement     6 kW          53 MWh/a           27 t/a        1 kW                   9 MWh/a                  5 t/a
Cooling         12,5 kW       110 MWh/a           60 t/a        2 kW                18 MWh/a                   10 t/a

          CoolTherm CO2 saving 72 t per year
                             German power mix: 0,55kg CO2 /kWh / VED
Reduction of carbon dioxide

                                      Electricity   Lighting, etc.
                                     Transformer/        3%
                                         UPS
                                 Air     10%
                              Movement
                                12%
                                                                     IT Equipment
                                                                         50%
                                      Cooling
                                       25%
Solutions and conclusions
  Duct and guide the supply air
  Free air flow of return air
  Minimize the duct system
  Minimize the velocity
  Minimize the hydraulic resistors


            C
            R
            A
            C
Thank you
  for your
 attention

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Green dc (1)

  • 1. Green Data Center High Density Cooling Solution
  • 2. An Alarming Truth Commercial IT causes around 2 % of global CO2 emission - just as much as world-wide air traffic! [Gartner]
  • 3. Global Datacenter Power Consumption Equals 14 large power stations (1000 MW) ! „Estimating total power consumption by servers in the U.S: and the world”, Jonathan G. Koomey, Februar 2007
  • 4. Why Data Volumes Are Exploding: each and every company, authority, institute … runs a data center critical business processes don’t work without IT global economic growth new applications every new software release needs more resources communication via internet voice, radio, pictures, video, TV abundant data storage traffic, facility (…) control …
  • 5. Up to 25 kW Load per Rack Today !
  • 6. IT Infrastructure energy efficient server and storage units consolidation on high performance systems, blades e.g. virtual desktops / thin clients server- and storage virtualization dynamic IT Each Watt saved counts twice! „In the data center, power and cooling costs more than the IT it supports”, Christian L. Belady, Electronics Cooling, Februar 2007
  • 7. A “Continuous Explosion” (I) “Continuous Explosion” [Netcraft]
  • 8. The CIO Dilemma to guarantee performance and availability to keep cost under control
  • 9. How Much Power Does Your Data Center Need?
  • 10. The Power Bill is Your Best Consultant
  • 11. Your Levers: IT Infrastructure - Server - Storage - Network Physical Infrastructure - Power - Cooling
  • 12. 50% of DC Power for Physical Infrastructure Electricity Lighting, etc. Transformer/ 3% UPS Air 10% Movement 12% IT Equipment 50% Cooling 25% The direction of energy efficiency Source: EYP Mission Critical Facilities Inc., New York
  • 13. Conventional Cooling Reaches its Limits Source: ASHRAE 2005 max. 5 (10)kW / rack - depending on dc design
  • 14. Common situation in data centres Too cold Very high air flow rate Too much by pass air Recirculation Low air return temperature No compromise with reliability and availability
  • 17. Benefits of CoolFlex • Complete air flow for server cooling • No by pass air • Lower velocity • Very low power consumption of CRAC fans • Higher heat transfer due to higher temperature difference • No hot spots • Higher supply air temperature • Higher free cooling ration • More redundancy
  • 18. CoolFlex, What to do CoolFlex, • Data Centre site assessment • Create cold zones according to data centre layout • Close all air leaking cut outs of the raised floor • Separate cold and hot zone inside the server rack • Add a roof top over the cold zone • Add a door at the end of the aisle
  • 19. Benefits of closed architecture: Knürr CoolTherm Knürr - minimal air circulation - short air flow path - highest delta T / air return temperature - highest coolant feed / return temperature free cooling chiller efficiency - up to 35 kW per rack - even cooling air temperature - no heat load to the room - rack individual adjustment / control - low noise emission - individual smoke detection / fire suppression
  • 20. Energy Efficiency Ene rgy Ef ficie ncy 15 °C 53,6°F 64,4°F 75,2°F
  • 21. Reduction of carbon dioxide Electricity Lighting, etc. Transformer/ 3% UPS Air 10% 25 kW CoolTherm Movement 12% IT Equipment 50% Cooling 25% CoolTherm fan power consumption app. 4% of server head load App. only 20% of compressor usage of the chilled water plant Low water back pressure Power usage Traditional Data Centres CoolTherm 25 kW acc. EYP Mission Critical Facilites Knürr Power input Power per year CO2 per year Power input Power per year CO2 per year Server 25 kW 219 MWh/a 120 t/a 25 kW 219 MWh/a 120 t/a Air Movement 6 kW 53 MWh/a 27 t/a 1 kW 9 MWh/a 5 t/a Cooling 12,5 kW 110 MWh/a 60 t/a 2 kW 18 MWh/a 10 t/a CoolTherm CO2 saving 72 t per year German power mix: 0,55kg CO2 /kWh / VED
  • 22. Reduction of carbon dioxide Electricity Lighting, etc. Transformer/ 3% UPS Air 10% Movement 12% IT Equipment 50% Cooling 25%
  • 23. Solutions and conclusions Duct and guide the supply air Free air flow of return air Minimize the duct system Minimize the velocity Minimize the hydraulic resistors C R A C
  • 24. Thank you for your attention