Specifications

H
o
t Aisl
e / C
o
l
d Aisl
e Approach
A common way to improve performance of existing raised
floor c
oolin
g applications has been the “hot aisle/cold aisle”
a
p
p
r
o
a
ch. In this configuration, rows of equipment racks are
arranged in alternating "hot" and "cold" aisles. Only the cold
aisle
s h
ave perforated floor tiles that allow cool air to come
u
p fr
om un
de
r the r
ais
ed floor.
The Li
ebert XD units enhance the Hot Aisle / Cold Aisle
approach by filling the cold aisle with air at the temperature
required for proper operation of the electronic equipment.
Feature
Frequently Asked Questions
In many cases, high heat density hot spots or zones require targeted cooling solutions.
The Li
ebert XD systems are specifically designed to address the higher heat loads that
r
esult from implementing blade servers or server consolidation strategies.
A leak in a water piping connection means that water could leak into the data center thus
causing damage to equipment. Instead of water, Liebert uses environmental friendly
refrigerant R-134a as the coolant in the XD cooling modules. The refrigerant would
become a gas if a leak were to occur, thus causing no damage to the equipment within
the space. In addition, the pumping unit (XDC) controls the refrigerant fluid temperature
to always be above the actual dew point in the room so no condensation can occur.
The Liebert XD comes with a 1-year warranty and is available with preventive
maintenance service options to ensures maximum efficiency of your equipment.
The Liebert XD systems are designed as plug-and-play units and can be easily connected
and disconnected to refrigerant lines. They can be easily reconfigured as heat densities in
your computer room change. Additionally, Liebert offers complete installation and
start-up services through the largest service organization in our industry.
I already have a cooling system.
Why do I need XD?
What are the advantages of
pumped refrigerant technology
over water-based solutions?
What is the warranty for the
Liebert XD?
How difficult is installation?
Question Resolution
Competitive Advantages
You may be asked how the Liebert XD systems compare to other cooling methods or competitive products.
Here are some major advantages:
The Liebert XD systems use pumped refrigerant, eliminating risk of leakage that can occur
from using chilled water.
The Liebert XDV and XDH rated capacity of up to 30 kW is achieved at a lower rating point
(lower inlet air temperatures and higher entering fluid temperatures) than other systems,
thereby efficiently providing more capacity than the competition.
The Liebert XD flexible connection piping with quick-connect fittings makes the systems
much easier to re-configure and expand than other types of cooling units that use limited
flexibility plastic piping.
No Risk of Water Leaks
Greater Capacity
Easily Reconfigured
73
V
iews of Computational Fluid Dynamics (CFD) by Fluent.