With many alternative cooling solutions available it can be confusing as to which most improves efficiency and reduces operating costs for your data centre? Airedale International Air Conditioning Ltd will demonstrate the benefits and constraints of your options to propose an optimised free-cooling solution for each application type, using CFD modelling and actual site data to demonstrate best practice. This presentation was delivered at DatacenterDynamics 2012 by George Hannah. George Hannah is Product Development Director for Airedale International Air Conditioning Ltd. He plays a key role in strengthening Airedale’s position at the forefront of precision air conditioning and chiller development, by leading an expanding programme of new product development and the application of new generation technology. His remit is to steer the company's expansion into developing rack level cooling systems and innovative cooling solutions that increase data centre efficiency, raise free-cooling potential and harness and reclaim energy. George heads a product development team of twenty three, including sponsored PhD students and graduate apprentices. He is a chartered mechanical engineer with a B Eng (Hons) from Heriot Watt University. For more information, please visit http://www.airedale.com/dcd

1. George Hannah,
Product Development Director
Better by design, exploring containment
options to optimise every Cooling kW

2. Why Airedale?
Global provider of efficient cooling solutions
Almost 40 years experience in IT industry
Largest UK manufacturer of IT cooling solutions
A pioneer in free-cooling technology
An industry leader in rack level cooling

3. Who Are We?

4. Who Are We?

5. What Do We Do?
50,000 applications since 1974 2011 1,200 last year

6. Business Issues
Footprint
Uptime
And Density
Operational
Efficiency
Costs
Capital
Costs

7. Types of Containment

8. The 2nd 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
TW

9. Open Aisle (500kW Facility)
Temperature (oC)
45
40
35
30
25
Return
20
15
Supply
10
Total heat load 5 kW per Rack
5
Total number of cabinets 100

10. Cold Aisle Containment (500kW Facility)
Temperature (oC)
45
40
35
30
25
20
15
10
Total heat load 5 kW per Rack
5
Total number of cabinets 100

11. Hot Aisle Containment (500kW Facility)
Temperature (oC)
45
40
35
30
25 Additional IT
opportunity =
20 420kW
15
10
Total heat load 10 kW per Rack
5
Total number of cabinets 50

12. InRak Hot Aisle Containment (500kW Facility)
Temperature (oC)
45
40
35
30
25
Additional
20
IT opportunity =
15 420kW
10
Total heat load 9.8 kW per Rack
5
Total number of cabinets 51

13. OnRak Compact Hot Aisle (500kW Facility)
Temperature (oC)
45
40
35 Additional
IT opportunity
30
=1880kW
25
20
15
10
Total heat load 20 kW per Rack
5
Total number of cabinets 25

14. ECHO - Compact Hot Aisle (500kW Facility)
Temperature (oC)
45
40
35
30 Additional IT opportunity =
894kW
25
20
15
10
Total heat load 20 kW per Rack
5
Total number of cabinets 25

15. Supply and Return Temperatures
Temperature (oC)
Supply Return
OnRak 45
40
ECHO
35
InRak 30
25
Hot Aisle 20
15
Cold Aisle
10
Open Aisle 5

16. Supply and Return Temperatures
Temperature 0C
Return Air
45
40
35
30
25
20 Supply Air
15
10
5
0
CRAC
Open Cold Hot
Cold InRak OnRak ECHO
Aisle Aisle Aisle
Aisle

17. What is Free Cooling?
Indirect - AIR Direct - AIR Indirect - WATER
IN
OUT

18. Free Cooling
Open Aisle
Free cooling Concurrent Mode Mechanical
Hours per year
600
1%
300
48% 51%
-6 -2 6 2 10 14 18 22 26 30
Ambient Temperature (ºC)

19. Free Cooling
Cold Aisle
Free cooling Concurrent Mode Mechanical
Hours per year
600
300
6% 62% 32%
-6 -2 6 2 10 14 18 22 26 30
Ambient Temperature (ºC)

20. Free Cooling
Hot Aisle
Free cooling Concurrent Mode Mechanical
Hours per year
600
300
25% 67% 18%
-6 -2 6 2 10 14 18 22 26 30
Ambient Temperature (ºC)

21. Free Cooling
InRak
Free cooling Concurrent Mode Mechanical
Hours per year
600
300
25% 67% 18%
-6 -2 6 2 10 14 18 22 26 30
Ambient Temperature (ºC)

22. Free Cooling
OnRak
Free cooling Concurrent Mode Mechanical
Hours per year
600
300
20% 69% 11%
-6 -2 6 2 10 14 18 22 26 30
Ambient Temperature (ºC)

23. Free Cooling
ECHO
Free cooling Concurrent Mode Mechanical
Hours per year
600
1%
300
89% 10%
-6 -2 6 2 10 14 18 22 26 30
Ambient Temperature (ºC)

24. Free Cooling
Free cooling
Open Aisle Cold Aisle Hot Aisle
Concurrent Mode
Mechanical
InRak OnRak ECHO

25. Technical Matrix
System Space claim Space claim
Free-cooling
efficiency (cooling (IT
opportunity (Annualised equipment equipment
(%) PUE) (m²) (m²)
Open Aisle 49% 1.45 14 60
Cold Aisle 68% 1.38 14 60
Hot Aisle 92% 1.30 14 30
InRak 92% 1.29 12 30
OnRak 89% 1.26 3 15
ECHO 99% 1.24 14 15

26. Commercial Matrix
Month
Operating Total Payback
Capital costs costs operating period
(annualised) £/kW p.a. (months)
Open Aisle £139,996 £291,402 £99 13
Cold Aisle £143,878 £125,869 £84 14
Hot Aisle £124,383 £95,585 £58 16
InRak £190,575 £60,350 £56 14
OnRak £186,620 £57,827 £33 15
ECHO £192,208 £42,992 £27 15

27. Case Study: Open Aisle Containment
System Space claim Space claim
Free-cooling
efficiency (cooling (IT
opportunity (Annualised equipment equipment
(%) PUE) (m²) (m²)
Open Aisle 49% 1.45 14 60
Cold Aisle 68% PUE 1.38 14 60
2.0
Hot Aisle 92% 1.30 14 30
InRak 92% 1.29 12 30
1.5
OnRak 89% 1.26 3 15
ECHO 99%0 1.24 14 15

28. Case Study: Open Aisle Containment
The chillers give us 1500kW n + 1 cooling plus a
stunning reduction in electricity consumption i.e.
2.5 times cooling capacity for 100 – 150kW less
power consumption per day.
Mark Ford
Data Centre Manager

29. Case Study: Cold Aisle Containment
System Space claim Space claim
Free-cooling
efficiency (cooling (IT
opportunity (Annualised equipment equipment
(%) PUE) (m²) (m²)
Open Aisle 49% 1.45 14 60
Cold Aisle 68% 1.38 14 60
Hot Aisle 92% 1.30 14 30
InRak 92% 1.29 12 30
OnRak 89% 1.26 3 15
ECHO 99% 1.24 14 15

30. Case Study: Hot Aisle Containment
System Space claim Space claim
Free-cooling
efficiency (cooling (IT
opportunity (Annualised equipment equipment
(%) PUE) (m²) (m²)
Open Aisle 49% 1.45 14 60
Cold Aisle 68% 1.38 14 60
Hot Aisle 92% 1.30 14 30
InRak 92% 1.29 12 30
---------
---------
OnRak 89% 1.26 ------ 3 15
95%
ECHO 99% 1.24 14 15

31. Case Study: Hot Aisle Containment
Airedale provides us with a fully integrated cooling
solution designed for maximum efficiency and
critical redundancy…Our carbon neutral status helps
our clients take huge steps towards their own
environmental goals and carbon reduction
commitments.
Rob Garbutt
Chief Executive Officer

32. Case Study: InRak Hot Aisle Containment
System Space claim Space claim
Free-cooling
efficiency (cooling (IT
opportunity (Annualised equipment equipment
(%) PUE) (m²) (m²)
Open Aisle 49% 1.45 14 60
Cold Aisle Guaranteed PUE 1.29
68% 1.38 14 60
Hot Aisle 92% 1.30 14 30
InRak 92% 1.29 12 30
OnRak 89% 1.26 3 15
ECHO 99% 1.24 14 15

33. Case Study: InRak Hot Aisle Containment
The InRak is perfectly designed…the units are very
clever; they ‘talk’ to each other and maintain pressure
in the room. ACIS gives us 24/7 control of the
operation and peace of mind.
Mike Marchant
Data Centre Manager

34. Case Study: OnRak Compact Hot Aisle
System Space claim Space claim
Free-cooling
efficiency (cooling (IT
opportunity (Annualised equipment equipment
(%) PUE) (m²) (m²)
Open Aisle 49% 1.45 14 60
Cold Aisle 68% 1.38 14 60
35% savings vs. standard DX
Hot Aisle 92% 1.30 14 30
InRak 92% 1.29 12 30
OnRak 89% 1.26 3 15
ECHO 99% 1.24 14 15

35. Case Study: OnRak Compact Hot Aisle
Our HPC facility at Leeds is growing …by meeting
our space constraints and slotting into our existing
cooling loop, the OnRak units from Airedale have
saved us space in an already densely packed
environment
Dr Jon Summers
Senior Lecturer, School of Mechanical Engineering

36. Increased IT Opportunity
Cooling Additional
Space m2 Rack (m2)
Equipment (m2) Space (m2)
100
30m² 32m² 56m² 45m²
80
60
40
20
0
Open Cold Hot
InRak OnRak ECHO
Aisle Aisle Aisle

37. 3 Year Lifecycle Cost
£ Total Capital Operating
Costs PUE
(millions) Cost (over 3 years)
1.2
1.45 1.38 1.30 1.29 1.26 1.24
1.0
0.8
0.6
0.4
0.2
0
Open Cold Hot
InRak OnRak ECHO
Aisle Aisle Aisle

38. Business Issues
Footprint
And Density Uptime
Operational
Efficiency
Costs
Capital
Costs

39. Contact Us
For more information on any of our products please visit:
www.airedale.com
Or alternatively, call us on + 44 (0)113 239 1000
Connect with us on YouTube, LinkedIn or Flickr:
www.youtube.com/airedalecooling
www.linkedin.com/company/airedale-international-air-conditioning-
ltd?trk=hb_tab_compy_id_110826
www.flickr.com/photos/airedale-air-conditioning/