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Stulz launches the CyberRack heat exchanger door

June 2017 by Emmanuelle Lamandé

Stulz UK launches the CyberRack, a new chilled water rear heat exchanger, with
cooling capacity from 19 to 32kW across the range. Its adapter frame ensures
the system fits most 19" server cabinets.

Stulz is expanding its product portfolio for rack-based cooling systems with
the CyberRack Active Rear Door. The heat exchanger door replaces the back
panel of the rack, and its compact design enables the cooling of all server
cabinets, including high-density systems, directly inside the data centre.
The space in the rack remains fully available for IT equipment. As the depth
of the rack increases by less than 300 mm, the door can also be retrofitted
in existing installations - no repositioning of server racks is needed. Two
versions of this product are available, with a cooling capacity of 19 or 32
kW. Up to five EC fans ensure an optimum airflow. Thanks to its individual
adapter frame, the CyberRack can be installed in all commonly available 19"
cabinets. The frame models are available in heights of 42U and 48U, and
widths of 600 mm and 800 mm.

The cooling capacity of the CyberRack is automatically adapted to the heat
load of the servers. This is achieved either directly through continuous
analysis of the measured temperatures, or indirectly via differential
pressure control. In this instance, the speed of the CyberRack fans is
adjusted in line with the airflow of the servers’ own fans.

By mounting the heat exchanger door directly on the rack, the transfer of
heat takes place inside the server cabinet - isolated from the ambient
environment. This allows a considerably higher temperature on the air and
chilled water side than in other room cooling systems, where the heat is
first emitted into the room and then cooled. Most of the cooling can be
delivered by means of Free Cooling. Combined with a chiller such as the
Stulz CyberCool 2, compressor
cooling is only required to cover the peaks.

In addition to its use as a standalone solution, the CyberRack can also be
used as an add-on for precision air conditioning systems with raised floor.


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