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Many data ceters are nowadays focusing on high performance computing applications, when doing so, heat loads per cabinet are expected to dramatically increase compared to the tradional, more contained, loads. This is not only already a challenge for new deployments, but can become an extreme hurldle for existing ones that are shifting towards these applications, while the cooling infrastructure is already in place.

ColdLogik Rear Door Coolers enhance the efficiency of most data centers without the need for any changes to their current design. By negating the heat at source, and removing the need for air mixing or containment, you gain the ability to significantly increase the supply water temperature, which means more efficient external heat rejection options become available.

In some scenarios this means that the ColdLogik RDC solution removed all compressor-based cooling therefore promoting the option to free cool all year round.

PURPOSE-BUILT FOR 48VDC ENVIRONMENTS

Engineered to integrate with OCP ORV3 architectures and 48VDC busbar power distribution

DESIGNED FOR HYBRID COOLING ARCHITECTURES

Complements direct-to-chip cooling by managing remaining air-side heat at the rack level

FUTURE-READY FOR HIGH-DENSITY RACKS

Built to support next-generation AI and HPC deployments within OCP-aligned infrastructures

COOLING WITHOUT TOUCHING YOUR POWER SETUP

Operates alongside existing 48VDC architectures without impacting power topology

OCP Hardware For High-Performance Workloads

Discover our OCP ORv3–compliant rack and power architecture designed for high-density AI and HPC deployments, with AC and DC power support beyond 100 kW per rack.

Learn more about Open Compute Products

Active Rear Door Cooler (RDHX)

Ambient air is drawn into the rack via the IT equipment fans. The hot exhaust air is expelled from the equipment and pulled over the heat exchanger assisted by EC fans mounted in the RDC chassis. The exhaust air transfers heat into the coolant within the heat exchanger, and the newly chilled air is expelled into the room at, or just below, the predetermined room ambient temperature designed around sensible cooling. Both processes are managed by the ColdLogik adaptive intelligence present in every active RDC, in this way the Rear Door Cooler uses air assisted liquid-cooling to control the whole room temperature automatically at its most efficient point

CL20 Active

Up to 92kW sensible cooling
42U, 48U and 52U
600w, 750w and 800w

CL23 HPC Active

Up to 200kW sensible cooling
Actual headroom 220 kW+
48U and 52U
800w

Legacy Data Centers

There are many reasons to get more from an existing data center: increasing revenue streams, removing hot spots, offering customers greater flexibility, or extending the data center lifecycle. ColdLogik RDC provides a fully retrofittable solution for legacy data centers.
It can be fitted to any OEM rack, use return water from existing perimeter cooling and chiller systems, and be top- or bottom-fed as standard. It does not affect adjacent bayed racks, preserves full rear rack access, and can be retrofitted into hot aisle containment without changing the floor layout.

Energy and Water savings

The ColdLogik RDC solution can dramatically change the efficiencies of data center environments. From year-round free cooling ability, which can cut energy consumption from cooling in the data center by over 90%. Through to higher water temperatures, in a closed loop system, which can save monumental volumes of water that can then be deployed in communities that need the resource more. The ColdLogik cooling system truly encapsulates the next step in site wide efficiency gains.

Make the Best out of your Real State

Thanks to the space saved in not using containment, CRAC units and related infrastructure, up to a 60% of the space previously reserved for those elements now becomes available again, which can be used for future expansions or used in a different way