Knürr CoolLoop - Knurr USA

1 Rack & Enclosure SystemsKn rr CoolLoop Side-mounted cabinets unit for highly efficient cooling in server cabinets from 10 to 30 kW with significant reductions in data centre energy costsKn rr CoolLoop is the world s first solution for datacentre server cooling that can be operated as both anopen and closed system can be set to either directly cool the adja-cent cabinet (closed system), or to supplement the datacentre cooling (open system). A system of valves en-sures that the correct cooling level is provided for Kn rr CoolLoop is awater-cooled cabinetunit for side mountingon server cabinets. It is a closed unit withwarm air suction fromthe rear and cool air ex-pulsion at the front blown vertically over theentire height of the rr CoolLoop side-mounted modular cooling unit for all server racks from 10 to 30 kWModularityThe Kn rr CoolLoop has a modularsetup that can be equipped with oneto four fan units.

2 Cooling is thereforeadapted to suit the actual require-ment within the data centre. The cool-ing range per Kn rr CoolLoop is 10 30 kW. Selection of the required ca-pacity can be determined by the datacentre operator. This ensures invest-ment security for the data centre op-erator, and only provides the requiredcooling power relative to the heat loadproduced by the data efficiencyThe Kn rr CoolLoop represents thehighest standards in data room cool-ing capacities. The main focus is se-lecting the methods and proceduresthat save the most energy by using themost modern components. This iswhy the tried, tested and proven ECfan technology is used air path is constantly monitoredand adjusted through the heat ex-changers and moisture eliminators,which results in minimum energy con-sumption by the Kn rr CoolLoop not only setsstandards with regard to pressure loss,but relatively high cold water pre runtemperature for optimum server cool-ing also ensures improved use of thecold water system with a high coeffi-cient of performance (COP).

3 The design also enables a high level offree cooling, which facilitates signifi-cant savings potential with cold watergeneration. Short air paths and thearrangement of the fans after the heatexchanger also help to reduce arrangement not only increasesthe useful lifetime of the fans, it alsoincreases the cooling airflow volumeas a result of the higher air in turn conserves resources andfurther reduces energy Kn rr CoolLoop makes no com-promises when it comes to availability,reliability and safety. The fans are con-figured with n+1 redundancy. TwoKn rr CoolLoops can be positionedon one server cabinet to meet thehighest requirements of a tier 4 datacentre. This ensures complete 2n re-dundancy of server cabinet Kn rr CoolLoop sets new stan-dards in control and monitoring. Aregulating valve is used to adjust thecool water volume to optimise serverinput air temperature, which can beregulated by the operator.

4 The speedof the fans is also adjustable to matchthe required air volume of the serverswhich can fluctuate between 0 100percent. A number of sensors ensure the high-est level of safety. The following aremonitored 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 systemAll control and monitoring functionscan be retrieved via an Ethernet inter-face. Integration into higher level networkmanagement systems is also possibleat no significant rr CoolLoop The cooling power can be dividedbetween additional data centre cooling and direct cooling of the server cabinet adjacent to the Kn rr CoolLoop .

5 CoolLoop TThe cooling power is only available as a supplement to the data centre cooling, supporting the computer room air conditioning units (CRAC).Together with the Kn rr CoolFlex , cold aisle containment system, this combination presents the ideal ad-dition for optimum medium power range server LThe most energy saving method of server cooling in data centres is cooling with closed air circuits in-side the server cabinet. Kn rr CoolLoop enables the implementation of this cooling principle, and espe-cially with restrictions in the data centre s structure heights, or with the required division of the cabinetaccess between IT and facility man-agement. Closed solutions also generate very low noise view with water connectionsEffective cool-ing power*10 kW20 kW30 kW30 kWWidth300 mm300 mm300 mm300 mmHeight2000 mm2200 mm2400 mm2000 mm2200 mm2400 mm2000 mm2200 mm2400 mm2000 mm2200 mm2400 mmDepth1200 mm /1300 mm1200 mm /1300 mm1200 mm /1300 mm1200 mm /1300 mmUseableheight42 HE46 HE50 HE42 HE46 HE50 HE42 HE46 HE50 HE42 HE46 HE50 HEWeight(empty)127 kg138 kg149 kg160 kg Electrical con-nection data200 264 VAC50/60 Hz410 watts200 264 VAC50/60 Hz820 watts200 264 VAC50/60 Hz1230 watts200 264 VAC50/60 Hz890 wattsPossible cooling water prerun temperatures:4 to 20 C*Given nominal cooling power:With 12/18 C cooling waterand 20 - 25 C server input airCooling water requirement:1,43 - 4,29 m3/hPressure loss:0,05 - 0,39 barNumber of fans:max.

6 4 Input air temperature:20 - 25 C (front)Ambient temperature:Up to 35 CWater amount:8,6 l Cooling water connection:G 1 1/4 male thread, flat sealingCondensation connection:5/8 tube connectorMax. operating pressure:10 barStandard colors:RAL 7021 or RAL 7035 Last revision: 02/2008 Number offans1233 + 1(n + 1) 5MI408 Printed in Germany Idea, Graphic, Editor: Gropp/Huber Specification subjects to change without rr AGGlobal HeadquartersMariakirchener Stra e 3894424 Arnstorf GermanyTel. +49 (0) 87 23 / 27 - 0 Fax +49 (0) 87 23 / 27 - contacts, please every precaution has been taken to ensure accuracyand completeness in this literature, Kn rr AG assumes noresponsibility, and disclaims all liability for damage resultingfrom use of this information or for any errors or omissions. 2008 Kn rr AG. All rights reserved throughout the subject to change without names referred to are trademarks or registered trade-marks of their respective owners.

7 Kn rr and the Kn rr logo are registered trademarksof Kn rr Network Power is a consistent global technology leader andrecognised expert that helps to secure business-critical processes, and bydoing so contributes to a business-critical continuity .A series of the most diverse applications, including the tried, tested andproven Kn rr rack system solutions and the thermal management con-nected with them, ensure the required network stability with the highesttechnolo-gical adaptability at the same rr system solutions in the world of information and network technolo-gy are part of an adaptive Emerson Network Power architecture, whichflexibly adjusts to all changes concerning security/safety, high-density andall associated capacities. Companies profit in a sustainable and long-termway from the high IT availability, operative flexibility and impressive re-duction in investment and operating rr AG is recognised around the world as one of the leading developers,manufacturers and distributors of rack and enclosure platforms in the in-door and outdoor area, including all relevant active/passive components of19 structures and the technologies connected with them.

8 Kn rr is certified in accordance with EN ISO 9001 and the EN ISO 14001standard. Kn rr s quality management continuously guarantees the high-est level of quality in all areas of the Power SystemsConnectivityDC Power SystemsEmbedded PowerIntegrated Cabinet SolutionsOutside PlantPower Switching & ControlsPrecision CoolingServicesSite MonitoringSurge & Signal ProtectionRack & Enclosure SystemsEmerson Network PowerThe global leader in enabling business-critical rr logo, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. 2008 Emerson Electric Co.