CL21 Passive Rear Door Heat Exchanger
Product Description
The ColdLogik CL21 Smart Passive is designed to provide high performance cooling with Zero operational costs. The performance is entirely dependent on the active equipment inside the cabinet, and the available static pressure. At 14° C / 57.2°F Water inlet, the CL21 Smart Passive is able to supply up to 29kW of cooling. Ideal for a bdata centre targeting a highly sustainable operating structure.
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CL20 ProActive Rear Door Heat Exchanger
Product Description
This single source solution replaces the traditional approach to data center cooling and permits load removal of over 90kW per cabinet, therefore has the capability to withstand low medium and the higher density demands experienced today.
The ColdLogik solution means that hot/cold aisles are no longer necessary therefore allowing customers to capitalise on the use of actual real estate within the data hall, permitting alternate room layout and enhanced scalability possibilities.
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CL23 ProActive Rear Door Heat Exchanger
Product Description
Designed to meet the challenging demands of High Performance Compute (HPC) cooling, USystems with its unique RDC has positioned itself alongside water to the chip and immersion cooling technologies, the CL23 HPC which is capable of an unrivalled 200kW of sensible cooling per industry standard rack.
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CL80 300w
Product Description
InRow Coolers ensure efficient thermal and energy performance by removing the heat generated by active equipment, preventing hot exhaust air entering space where it is not permitted.
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CL80 600w
Product Description
The ColdLogik CL80 InRow Cooler provides precision cooling for new or retrofit environments where aisle containment is utilised.
The CL80 also incorporates the award winning ColdLogik Management System to ensure maximum capacity, efficiency and control.
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CDU
Product Description
CDU provides efficient separation of the primary and secondary fluid circuits through a plate heat exchanger. The CDU is designed to operate mainly on RDC/IRC deployments while occupying the space of a standard 42U, 800w, 1200d rack.
Soundproof Rack
Product Description
Designed to deliver the ultimate combination of noise reduction and air-cooled thermal performance. The UCoustic Rack acts as a 1m² server room and allows for a safe and secure deployment of IT equipment whenever and wherever it is needed, saving space, cost, and deployment time.
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Uspace 4210
Product Description
The USpace 42U 600mm x 1000mm 4210 Server Cabinet is the latest premium cabinet range offering from USystems. Smart design and state of the art manufacturing facilities guarantees unbeatable quality, style and innovation associated with USystems.
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Uspace 5210
Product Description
The USpace 5210 Data Rack Solution is a premium comms cabinet range from USystems. Smart design and state of the art manufacturing facilities guarantees the unbeatable quality, style and innovation associated with USystems.
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Uspace 5210 (ODF)
Product Description
The USpace 5210 ODF racks are designed to offer a solution to the challenges of high-density cabling by providing a unique working and access environment within a small footprint that enables you to better manage your high density fibre network, and future-proof it as it evolves.
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Horizontal Aisle Containment
Product Description
Horizontal Aisle Air Containment fully encases the corridor with a rigid enclosure which maximises the efficient use of cold air being fed in through the raised floor. Providing optimum data center cooling without compromising data center design
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Vertical Aisle Containment
Product Description
Vertical containment allows for the integration of raised floor air-conditioning into the standalone warm aisle containment – this way both rows are climatically neutral against the rest of the data center. Here at USystems we provide the very best data center air and water cooling, ensuring your data center is working at its optimum.
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EDGE-3 Soundproof MDC
Product Description
Arguably the best all round performing air-cooled soundproof MDC in the world – the EDGE-3 replaces the need for a dedicated server room and only takes up less than 1m² of valuable office/floor space, allowing localised (Edge) computing in populated or more sensitive locations – especially where there might be a concern of server noise being a distraction or breaching noise at work regulations..
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EDGE-5 Air Conditioned MDC
Product Description
Designed specifically to cater for localised Edge computing demands and associated peripherals as a standalone solution, ideally located in a well ventilated room.
The EDGE -5 is a self-contained air-conditioned MDC and is an ideal solution for projects requiring active cooling without the use of an external condenser.
The cooling is provided by an inverter driven direct expansion system, which under the right conditions is 80% more energy efficient than an non-inverter driven AC unit.
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We engineer for a sustainable tomorrow. View our Coporate Video to find out more 
The market perception of a Rear Door Cooler (RDC) is that it can only be used on a one-to-one basis with the cabinet it is cooling. However, for more than a decade, USystems have consistently disproved this theory. This document will detail how this can be done.
The basic principle surrounding the ColdLogik RDC, is that it controls the whole room environment with built in adaptive intelligence.
During standard operation of the USystems RDC systems, air is discharged evenly in both horizontal planes via EC fans. Due to the fans being equally positioned in the RDC, the air provided across the adjacent cabinets is uniform, therefore enabling USystems RDC solutions to cool multiple cabinets using a single unit.Cooling by Air-Mixing.
Whilst it is true that to achieve optimum operational efficiency an RDC per cabinet is the most effective method, it can still be an effective proposition to deploy an RDC for every second or every third cabinet. The choice of which comes down to a multitude of factors however it can be easily explained by describing the choice as ‘Optimal energy savings and OpEx vs CapEx’.
To illustrate the CapEx saving potential, this philosophy can be applied to a real-world application. Customer A required a cooling solution where the room temperature was maintained at ASHRAE A1, with a cooling requirement per cabinet of 10kW.
Thestraightforward 1:1 deployment provides the largest opportunity to reduce the OpEx, as operational savings are made through the use of warmer water (reduced mechanical cooling investment required).
However, this also has the largest CapEx, a greater initial venture than originally budgeted for by Customer A.By redesigning the deployment to use a 3:1 method, each RDC produces instead 30kW of cooling duty. This significantly reduces the CapEx down with a 61% saving. While the 3:1 solution has increased mechanical cooling costs due to the use of colder water, the reduced CapEx aligns with Customer A’s budgetary considerations.
Operating with ASHRAE standards for the active equipment internally for the Cabinet means that both the volume of air required by the equipment and the temperature required for the air flow from the door can be used to estimate the anticipated room
temperature. The formulae by which this can be shown is as follows:
At low duties, an RDC may be deployed in every two or three cabinets. While what determines the low duty threshold for Cooling by Air-mixing would vary (based on site-specific parameters, such as fluid temperatures, relative humidity etc), USystems are comfortable in applying a general threshold of 6kW and lower for RDC’s deployed on every third cabinet, and 15kW or lower for every second cabinet. This is not a definitive ceiling, as the adaptive intelligence of the RDC product, and the many variables in designing a data center allow for viable solutions that perform beyond these general models, such as the deployment illustrated for by Customer A. USystems have illustrated the thresholds of 6Kw and 15kW below:
Example A: 3 x Racks to 1 x RDC
In a 3:1 configuration shown here, where the cooling requirement in each cabinet is 6kW, each rear door would have a total cooling requirement of 18kW. this would directly cool the cabinet it is fitted to, and indirectly cool the air from the cabinets on the left and right. The pattern repeats for the full bank.
Where a room temperature of 27°C/80.6°F or below is desired (to keep with ASHRAE A1 class guidelines) USystems would assume the air off from the Cabinets without the RDC to be approximately 40°C/104°F and produce circa 600CFM. If on application this information can be provided, USystems are able to produce more accurate room temperature projections. The RDC in this application would be producing 18kW of cooling, generating 1800CFM, with an air off coil temperature of 20°C/68°F. The data in this example would
populate the formulae as follows:
Example B: 2 x Racks to 1 x RDC
As the required cooling density increases, the ratio of RDC’s to racks generally increases proportionally. In a 2:1 configuration where the cabinets being cooled are producing 15kW each, the following would apply if a room temperature of 27°C/80.6°F is desired. USystems would expect the air off from the Cabinets without the RDC to be approximately 40°C/104°F and produce circa 1500CFM.
The RDC in this application would be producing 30kW of cooling, generating 2250CFM, with an air off coil temperature of 15°C/59°F. The data in this examplewould populate the formulae as follows:
The anticipated room temperature in this case would give a mixed air temperature of 25°C/77°F, which is under the 27°C/80.6°F ASHRAE recommendations.
These examples illustrate the higher densities that can be applied using a 3:1 and 2:1 deployment strategy. With increased airflow requirements at higher duties, it is generally advisable to deploy low duty cabinets between high duty cabinets with RDC’s fitted to best maximise the air mixing strategy. There is also opportunity for growth in the data center to either increase density, or reduce OpEx by adding more RDC’s at a pace to suit CapEx.
The reduced OpEx is achieved by increasing the number of RDC’s which allows an elevation in water temperatures (in most cases supplied by mechanical cooling), therefore reducing overall energy consumption.
When increasing the water temperatures, it typically means: first the external plant can be physically smaller, second, the efficiency per kW cooled will increase, and third, the free cooling that can be utilised on site will increase exponentially dependant on geographic location.
To conclude, the ColdLogik RDC solution is truly unique. Allowing data center stakeholders to utilise a system that is both sustainable in its capacity for future growth, and maximises flexibility with the ability to improve efficiency as density is added.To find out more on how we can make a Cooling by Air Mixing solution work for you, please contact sales@systems.com or visit https://www.coldlogik.com/data-centre-products/cl20proactive#prodeployment for more information.
Up to 92kW sensible cooling 42U, 48U, 52U 600w, 750w, 800w
Up to 200kW (Actual headroom 220kW+) sensible cooling 48U, 52U 800w
Up to 29kW sensible cooling 42U, 47U, 52U 600w, 750w, 800w
Get in touch with us at USystems Ltd to join the journey towards more efficient and sustainable data centers. Our leading and innovative technologies are designed to help you use less energy and reduce your carbon footprint on a global scale. Contact us now to explore how we can work together for a greener future.