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