green dc (1)
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GreenGreen Data CenterData CenterHigh Density Cooling Solution High Density Cooling Solution
An Alarming TruthAn Alarming TruthAn Alarming Truth
Commercial IT causes around2 % of global CO2 emission -
just as much as world-wide air traffic![Gartner]
Global Datacenter Power ConsumptionGlobal Datacenter Power ConsumptionGlobal Datacenter Power Consumption
„Estimating total power consumption by servers in the U.S: and the world”, Jonathan G. Koomey, Februar 2007
Equals 14 large power stations (1000 MW) !
Why Data Volumes Are Exploding:Why Data Volumes Are Exploding: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 !Up to 25 kW Load per Rack Today !Up to 25 kW Load per Rack Today !
IT InfrastructureIT IT InfrastructureInfrastructure
energy efficient server and storage unitsconsolidation on high performance systems, blades e.g.virtual desktops / thin clientsserver- and storage virtualizationdynamic 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)A A ““Continuous ExplosionContinuous Explosion”” (I)(I)
[Netcraft]
The CIO DilemmaThe CIO DilemmaThe CIO Dilemma
to guarantee performance and availability
to keep cost under control
How Much Power Does Your Data Center Need?How Much Power Does Your Data Center Need?How Much Power Does Your Data Center Need?
The Power Bill is Your Best ConsultantThe Power Bill is Your Best ConsultantThe Power Bill is Your Best Consultant
Your Levers:Your Levers:Your Levers:
IT Infrastructure
- Server- Storage- Network
Physical Infrastructure
- Power- Cooling
50% of DC Power for Physical Infrastructure50% of DC Power for Physical Infrastructure50% of DC Power for Physical Infrastructure
Air Movement
12%
Electricity Transformer/
UPS10%
Lighting, etc.3%
Cooling25%
IT Equipment50%
The direction of energy efficiency
Source: EYP Mission Critical Facilities Inc., New York
Conventional Cooling Reaches its LimitsConventional Cooling Reaches its LimitsConventional Cooling Reaches its Limits
Source: ASHRAE 2005
max. 5 (10)kW / rack -
depending on dc design
Common situation in data centresCommon situation in data centresCommon 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
GreenGreen Data CenterData CenterSolutionsSolutions
CoolFlex: open architectureCoolFlexCoolFlex: open architecture: open architecture
Benefits of CoolFlexBenefits of Benefits of CoolFlexCoolFlex
• 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 doCoolFlexCoolFlex, What to do, What to do
• 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 CoolThermBenefits of closed architecture: KnBenefits of closed architecture: Knüürr CoolThermrr CoolTherm
- minimal air circulation- short air flow path- highest delta T / air return temperature- highest coolant feed / return temperature
free coolingchiller 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 EfficiencyEnergy Efficiency
53,6°F 64,4°F15 °C
Energy Efficiency
75,2°F
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
Reduction of carbon dioxideReduction of carbon dioxideReduction of carbon dioxide
25 kW CoolTherm Air Movement
12%
Electricity Transformer/
UPS10%
Lighting, etc.3%
Cooling25%
IT Equipment50%
Power usage Traditional Data Centres CoolTherm 25 kWacc. 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/aAir Movement 6 kW 53 MWh/a 27 t/a 1 kW 9 MWh/a 5 t/aCooling 12,5 kW 110 MWh/a 60 t/a 2 kW 18 MWh/a 10 t/a
CoolTherm CO2 saving 72 t per yearGerman power mix: 0,55kg CO2 /kWh / VED
Reduction of carbon dioxideReduction of carbon dioxideReduction of carbon dioxide
Air Movement
12%
Electricity Transformer/
UPS10%
Lighting, etc.3%
Cooling25%
IT Equipment50%
Solutions and conclusionsSolutions and conclusionsSolutions 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
CRAC
Thank youfor your
attention