Brochures and Data Sheets

High Heat Density Solutions For Rack, Spot And Zone Cooling
Mission-critical heat removal systems can now be configured to target
cooling directly at hot spots. Unique equipment designs also enable users
to handle high heat loads without consuming additional floorspace.
Data Center Cooling Solution Starts With The Best
A Liebert DS Mission-Critical Cooling System provides
basic cooling, humidity control and air filtration.
The Liebert XD
™
System Provides
Supplemental Sensible Cooling For High
Heat Density Racks Or Zones.
Product Features Include:
Energy efficient.
Can cool more than 30kW per rack.
Pumped refrigerant solutions are ideal for use around
electronic equipment.
Minimal floorspace requirements.
Flexibility to accommodate various equipment layouts.
Scalable – add or move cooling modules as your needs
change without the need for an HVAC technician.
Space-Saving
Solution That
Cools From The Top
The Liebert XDV
Cooling Module mounts
vertically above or on
the IT rack enclosure,
drawing hot air from
inside the cabinet or
from the hot aisle. It
then cools the air and
discharges it down
to the cold aisle. This
space-saving solution
requires zero floor
space. Available
with Smart Module
integrated control
board, for increased
module control and
monitoring.
A Chiller Designed
For Direct System
Configurations
The Liebert XDC
Chiller is a specially
designed indoor unit
that connects directly
to the Liebert XD
Cooling Modules
and provides chilled
pumped refrigerant
circulation and
control. It ensures
that the refrigerant
is constantly above
the actual dew
point in the room,
eliminating concern
about condensation.
Available with several
heat rejection options.
The Overhead
Cooling Solution
The ceiling-mounted
Liebert XDO Overhead
Cooling Module
mounts directly above
the cold aisle. It draws
in hot air from the
hot aisle and then
discharges cool air
into the cold aisle
where the equipment
air inlets are located.
This energy-efficient
unit takes up no
floor space. Available
with Smart Module
integrated control
board, for increased
module control and
monitoring.
Pumping Unit
Designed For Indirect
Configuration
Applications
When a building chilled
water system is available,
the Liebert XDP with
iCOM Pumping Unit
serves as an isolating
interface between the
building chilled water
system and the pumped
refrigerant circuit. It
circulates refrigerant to
the XD Cooling Modules
at a temperature
always above the actual
dew point to prevent
condensation. Liebert
XDP features Liebert
iCOM controls, enhancing
system reliability and
flexibility.
Total Data Center Cost (less land)
($000)
Cooling System
Data Center Cost (New Construction)
Liebert XD - Supplemental Cooling
Requires less Chiller Capacity
Liebert XD - Supplemental Cooling
with Lower Operating Costs
$30,000
$25,000
$20,000
$15,000
$10,000
$5,000
$0
Building Cost
Less Cooling
50 W/sq.ft
(500 W/m
)
150 W/sq.ft
(1500 W/m )
Fixed Load of 4,000 kW
400 W/sq.ft
(4000 W/m )
Building Size
222
Power Usage
0.00
0.10
0.20
0.30
0.40
0.50
0.60
CW CRAC
at 100%
Capacity
CW CRAC
at 50%
Capacity
Liebert XD
at 100%
Capacity
Liebert XD
at 50%
Capacity
kW power to cool 1 kW of sensible heat
Fan
Pump (XD)
Pump (CW)
Chiller
Chiller Capacity
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
CW CRAC Liebert XD
kW Chiller Capacity per kW
Of Sensible Heat Load
Latent Load
Fan Load
Sensible Load
15% Lower
27% Lower
32% Lower
80,000 sq.ft.
8,000 m
2
27,000 sq.ft.
2,700 m
2
10,000 sq.ft.
1,000 m
2
The smaller chiller
plant and lower
fan load result in
significant energy
savings. A 27%
energy savings is
very conservative.
Row-based Cooling
That’s Right In Line
With Your Needs
The modular Liebert
XDH Horizontal
Row Cooler is placed
directly in line with rack
enclosures. Air from
the hot aisle is drawn in
through the rear of the
unit, cooled, and then
discharged through the
front of the unit into
the cold aisle. Available
with Smart Module
integrated control
board, for increased
module control and
monitoring.
Pumped refrigerant technology is ideal for use around electronic equipment. It operates at
low pressure in the piping circuit and would become a gas at room conditions.
Use of pumped refrigerant also makes the system very energy efficient and it saves space
with smaller piping requirements and the ability to utilize more compact heat exchangers.
Pumped Refrigerant
Approach
10
Supplemental Sensible Cooling