Reliable and sustainable cooling for datacenters. The Installect Group has been realizing solutions since 1998. We are specialized in Aquifer Thermal Energy Storage (ATES). Groundwater bodies are perfect for storing heat and cold. Datacentercooling with ATES is reliable, safe and energy friendly. International awards for green datacentercooling prove it!

1. Reliable sustainability for
datacenters

2. Content
• The Installect Group
• What is ATES?
• Reliability
• ATES and DC’s
• Market developments
• Method and technique
• Project examples
• Points of attention

3. The Installect Group
Concept development & advice
ATES and heat pump systems
Gas engine heat pump systems
Energy management

4. System management
Realization
Concept development
Reliable sustainable energy systems

5. Aquifer Thermal Energy Storage
Aquifer Thermal Energy Storage (ATES) is a method to store
energy in the form of heat or cold in the subterranean
groundwater.
Aquifers (subterranean bodies of water) are very suitable to store heat or cold in. In the
summer the cool groundwater can be used to cool buildings, whilst the warm water is
stored under ground for use in the winter.

6. Reliable
• Make a good well
• Then simply pumping water back and forth.
• Robust (less parts)
• Safe underground thermal storage
• No chillers needed
• No influence from outside temperature

7. ATES for DC (Spring / Autumn)
Spring / Autumn:
Free cooling with cooling tower

8. ATES for DC (Winter)
Winter:
Free cooling and aquifer charging
with cooling tower

9. ATES for DC (Summer)
Summer:
Cooling with cooling tower
and ATES

10. Without ATES, with gas engine heat pump
• Exchanging residual heat with office or residential building
• Gas engine heat pump: cooling and heating simultaneously
• Cooling: used for DC
• Heating: capable of high temperatures (70 degrees Centigrade)

11. Single well and Double well systems
Be aware of “short circuit”

12. • Phased implementation
• 1 well = 1 cooling system
• Wells can reinforce each other
Advantages of single well systems

13. Market development Netherlands
• Amsterdam local government actively enforces:
– EUE 1,4 for existing DC’s
– EUE 1,3 for new DC’s
• This sets the standard for The Netherlands
• Focus on sustainability
– In the market
– By the government

14. DC + ATES = reliable and sustainable
• EUE < 1,1
• Energy efficient cooling and emergency cooling
• Saves emergency power load
• Quick system startup
• No chillers needed
• So: + on both “Power” and “Cooling”

15. Method
• System analysis
• ATES location check (geohydrology)
• Mapping optimizations and phase ability
• Optimizing free cooling
• Determining deployment of free cooling
• Modelling
• Determining system type and size
• Applying knowledge of design, realization and system management

16. Optimizing free cooling and ATES
• Optimizing free cooling deployment
• Storing overcapacity in ATES
• ATES is redundant back-up
• Exchanging residual heat

17. Preconditions for Integration
• Optimizing distribution in delivery system
• Optimizing temperature trajectories
• Controlling computairs on supply air temperature
• Setting airflow for computairs (some overpressure in cold
corridor)
• Simultaneous redundancy for computairs

18. The right choice in free cooling

19. Project example Equinix
• New closed DC, 12 MW
• 3x double well type GD250
• Specific telescope construction
• Emergency cooling
• Underground heat exchange

20. Project example Schuberg Philis
• Closed DC renovation, 800 kW upgraded to 1,2 MW
• 3x single well type GT50
• Realized during operation

21. Points of attention
Always project specific approach
• Residual heat use applicable?
• New or renovation?
• Size
• Location
• ATES balance

22. Questions?
Ronald Smit: +31 (0)6 29 014 601
smit@installect.nl www.installect.nl
Jeffrey Siemes: +31 (0)6 21 546 610
siemes@geocomfort.nl www.geocomfort.nl
Ruben Meijer: +31 (0)6 21 807 296
meijer@reduses.nl www.reduses.nl
Ivo Everts: +31 (0)6 25 189 212
everts@insted.nl www.insted.nl

23. Reliable sustainable cooling for
datacenters
The Installect Group, at your service