Server Cooling

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Server Cooling Reduce your cooling costs by over
90
EcoCooling can reduce the electricity usage and
carbon impact of server room and data centre
cooling systems by over 90
The Concept
An EcoCooler takes external air and passes it to
the void under the raised floor. Below 18C
ambient air is taken and mixed with air
re-circulated from the hot aisle. Above 21C the
EcoCooler uses evaporative cooling to provide air
which never exceeds 22C. The cold aisle
containment optimises the air distribution.

• CRACs
• Can provide very close control of temperature and
  humidity.
• Typically uses energy intensive centrifugal fans.
• In many cases hot spots are present due to poor
  air distribution.
• CRACs are normally large duty items resulting in
  expensive N1 and 2N solutions.
• Energy use varies from 33 to 100 of equipment
  installed capacity.
• Cannot normally be accommodated by UPS.
  Expensive equipment is required for rapid
  recovery from power outage.

• EcoCooling
• Can provide ASHRAE and manufacturer compliant
  conditions.
• Uses low energy axial fan technology.
• Hot and cold aisle arrangements are ideal for
  EcoCooling systems.
• Small modules offer low capital cost solutions to
  differing tiered reliability requirements.
• Energy use is typically 5 of installed capacity
  dependent upon ambient conditions.
• UPS is normally capable of maintaining supply to
  EcoCoolers. In case of power outage cooling
  recovery is practically instantaneous.

Case Study Warwickshire County Council Two
EcoCoolers were installed as part of a balanced
ventilation system at Kings House, Bedworth to
cover a 30KW Load
100 compliance with ASHRAE 18C to 27C
www.ecocooling.org
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A low cost, low carbon, alternative to air
conditioning of server rooms and data centres
EcoCooling can be applied using a range of
installation methods. The example below shows
how a standard EcoCooling Module can be
retrospectively fitted to an existing facility.
As warm air passes over wet filter pads water
naturally evaporates into the air. The air is
cooled as it gives up the heat required to
evaporate the water.
1 Fresh air is brought into the system though
primary filtration and wetted filter pads 2
Water detection provides additional security 3
Filters remove airborne particles 4 Isolation
damper is linked to fire system 5 Cool air is
fed into void under raised floor 6 Temperature
compliant air is fed into cold aisle 7 Warm air
from hot aisle is re-circulated to heat incoming
air when ambient temperatures are below 18C 8
Hot air is extracted and exhausted to outside of
building.
Comprehensive water process controls are employed
to ensure hygienic and efficient operation.
1 EcoCooling evaporative coolers are externally
fixed 2 Modular systems simple compliance with
tiered redundancy levels 3 Existing CRAC
systems can be retained 4 Air is supplied to
raised floor. 5 Standby generators only have to
support 10 of the electricity consumption of the
CRAC systems. 6 UPS rooms are cooled with
simple ventilation systems utilising evaporative
cooling 7 - EcoCoolers are linked to all fire
systems for controlled shut-downs. 8 Typical
roof mounted EcoCooler.
Control philosophy of cooling process.
Capital Cost
CRAC
EcoCooling
Running Cost
Some FAQs How are such savings possible? Free
air systems are widely employed but normally rely
on a refrigeration based system to take over when
ambient temperatures exceed 21C. Evaporative
cooling overcomes this and so removes the need
for any refrigeration equipment. The only
significant energy input is to the air
distribution fans. Why has this technology not
been used before? Modern equipment is much more
robust with regards to both temperature and
humidity. Typical manufacturer's environmental
operating specifications are 10C to 35C and 10
to 95 Relative Humidity. Where are examples of
free air cooling? Intel have completed a proof of
concept study at a high intensity data centre in
New Mexico with 75 savings on cooling energy
use. A joint project between Sun and belgacom
(Belgian Telecom) to build a free air cooled
system in Edinburgh is now operational. See
EcoCooling web site for links to these
studies How can this technology be incorporated
into my business? EcoCoolers can normally be
retrofitted to existing facilities. In many
cases the CRACs are retained to provide a final
level of security. The cooling of UPS rooms is
particularly straightforward.
CRAC
EcoCooling
EcoCooler Specification Air Flow Approx load
managed Max Power input Operating
weight Height Width Depth
3 m3/s 30 kW 1.5 kW 120 KG 1700 mm 1100 mm 1100
mm

• Warranty
• 2 years warranty on all parts

EcoCooling Limited Symonds Business Park,
Newmarket Road, Risby Bury St Edmunds, Suffolk
IP28 6RE Tel [phone] Fax 00 (44)
1284 810 399 Email sales_at_ecocooling.org Web
www.ecocooling.org
www.ecocooling.org