Knürr CoolLoop® is the world’s first solution for data center server cooling that can be
operated as both an open and closed system.
The system can be set to either directly cool the adjacent cabinet (closed system), or to
supplement the data center cooling (open system).
A system of valves ensures that the correct cooling level is provided for every server.
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The Knürr CoolLoop® is a water-cooled cabinet unit for side mounting on server cabinets.
It is a closed unit with warm air suction from the rear and cool air expulsion at the front –
blown vertically over the entire height of the cabinet.
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Modularity
The Knürr CoolLoop® has a modular setup that can be equipped with one to four fan units. Cooling is therefore adapted to
suit the actual requirement within the data center. The cooling range per Knürr CoolLoop® is 10 to 30 kW. Selection of the
required capacity can be determined by the data center operator. This ensures investment security for the data center
operator, and only provides the required cooling power relative to the heat load produced by the data center.
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Reliability
The Knürr CoolLoop® makes no compro-
mises when it comes to availability, reliability and safety.
The fans are configured with
n+1 redun-
dancy.
Two Knürr CoolLoops® can be posi-
tioned on one server cabinet to meet the highest requirements of a tier 4
data center. This ensures complete 2n redundancy of server cabinet cooling.
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Energy efficiency
The Knürr CoolLoop® represents the highest standards in data room cooling capacities.
The main focus is selecting the methods and procedures that save the most energy by
using the most modern components. This is why the tried, tested and proven EC fan
technology is used consistently.
The air path is constantly monitored and adjusted through the heat exchangers and moisture eliminators, which results in minimum energy consumption by the fans.
The
Knürr CoolLoop® not only sets standards with regard to pressure loss, but relatively
high cold water pre run temperature for optimum server cooling also ensures improved
use of the cold water system with a high coefficient of performance (COP).
The design also enables a high level of free cooling, which facilitates significant savings
potential with cold water generation. Short air paths and the arrangement of the fans after
the heat exchanger also help to reduce energy consumption.
This arrangement not only increases the useful lifetime of the fans, it also in-
creases the cooling airflow volume as a result of the higher air density. This in turn conserves resources and further reduces energy
consumption. |
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Control
The Knürr CoolLoop® sets new standards in control and monitoring. A regulating valve is used to adjust the cool water volume
to optimise server input air temperature, which can be regulated by the operator. The speed of the fans is also adjustable to match
the required air volume of the servers which can fluctuate between 0 – 100 per cent. A number of sensors ensure the highest level
of safety.
The following are monitored via a colour display:
• Server input air temperatures
• Server output air temperatures
• Relative humidity
• Cold water prerun and postrun
temperatures
• Cold water flow rates
• All doors
• Water sensors in the collecting tray
• Smoke detectors
• Warning lights on the cabinets
• Optional early smoke detection and
fire extinguisher system
All control and monitoring functions can be retrieved via an Ethernet interface.
Integration into higher level network management systems is also possible at no significant expense. |
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 Knürr CoolLoop® MicroSite |
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