Emerson Liebert XD CoolFrame User Manual
Pr
ecision Cooling
f
or Business-Critical Continuity
Liebert XD™CoolFrame
™
Fully Integrated Cooling Solution For The Egenera®BladeFrame®EX System
Working Together To Meet The Challenges
Of Today’s Data Centers
Egenera and Liebert have recognized that many
customers are concerned with rising heat loads in their
acilities and wanted to provide a flexible, cost-effective
f
solution to reduce the stress on existing cooling
systems as additional computing capacity is installed.
The Liebert XD CoolFrame allows the BladeFrame EX to
be placed in a data center environment around other
heat-generating equipment without adding to the heat
load in the room. Use of the Liebert XD CoolFrame also
enables users to place more BladeFrame EX systems
into the data center than would otherwise be possible
without it.
Liebert XD CoolFrame
Liebert XD Pumping Unit
A Cooling Solution For Your Egenera BladeFrameEX
System From The Leader In High Density Heat Removal
The Liebert XD Solution
iebert XD Waterless Coolant—This unique application of an off-the-
Liebert XD Cooling Solutions: An Adaptive
Mission-Critical Cooling Architecture That
Accommodates Changes
L
shelf product makes the Liebert XD solution very energy efficient. The XD
Coolant operates at low pressure and becomes a gas at room
temperatures, making it ideal for use around electronic equipment.
Tighter spacing of racks and higher
component density within each rack
can require a level of cooling that is
much greater than traditional
computer room air conditioning
systems can effectively handle. The
number of cooling units needed and
the energy required to operate them
make this arrangement extremely
inefficient. The Liebert XD CoolFrame
allows a higher density of BladeFrame
EX systems within the data center
than is possible with standard
computer room cooling solutions.
Adding targeted supplemental
cooling is much more costefficient than trying to lower the
temperature of localized hot spots
by increasing the overall room air
conditioning capacity. Liebert
X-treme Density mission-critical
cooling systems are specifically
designed to address the higher
heat loads generated by tightly
packed electronic rack enclosures.
Individual systems can cool hot air
ejected from the enclosure or cool
hot spots or zones near the racks.
There are two reasons the Liebert XD system uses a waterless refrigerant.
First, many data center managers are reluctant to re-introduce water into
their facilities because of the possibility of equipment damage from
leakage. Secondly, the refrigerant used in the Liebert XD system is more
efficient than water and has advantages in system design and reducing
energy costs associated with cooling.
Liebert XDC—A Coolant Chiller
Designed For Direct System
Configurations
The Liebert XDC Coolant Chiller is a
specially designed indoor unit that
connects directly to the Liebert XD
CoolFrame modules and provides
XD Coolant circulation and control.
It ensures that the coolant is
constantly above the dew point in
the room, eliminating concern for
condensation. Available with several
heat rejection options.
H2O H2O
Liebert XDC
Chiller
Liebert XDP— Pumping Unit
Designed For Indirect System
Configurations
When a building chilled water
system is available, the Liebert XDP
Pumping Unit serves as an
intermediary to isolate the building
chilled water circuit from the XD
Coolant circuit. It circulates coolant
to the Liebert XD CoolFrame at a
temperature always above the dew
point to prevent condensation.
Liebert XDP
Pumping Unit
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