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
…
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
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
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
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