• by: Bisola Orimalade
• 0 Comment

A Practical Alternative to Traditional Data Center Cooling

Cooling has become one of the most pressing challenges in modern data centers. As rack densities rise and workloads become more intensive, traditional room-based air cooling is increasingly pushed beyond its limits. Rear Door Heat Exchangers offer a different approach, one that focuses on removing heat exactly where it is generated.

The ColdLogik Rear Door Heat Exchanger (RDHx) is designed to mount directly onto the rear of a server cabinet. Instead of trying to cool an entire room, it captures warm exhaust air as it leaves the rack and transfers that heat into a liquid circuit. The cooled air is then returned to the data hall, keeping temperatures stable without overloading the wider cooling plant.

This method changes how thermal management is handled inside the data center.

Cooling Where It Matters Most

Traditional air-conditioning systems rely on distributing cold air across large spaces. This often leads to uneven airflow, localised hot spots, and higher fan speeds to compensate. RDHx systems work differently. By addressing heat at rack level, ColdLogik removes thermal build-up before it spreads, reducing stress on both IT equipment and mechanical systems.

The result is a more controlled operating environment, particularly useful in high-density and mixed-load deployments.

Improved Equipment Stability

Uneven cooling is a common cause of server throttling and unexpected shutdowns. By maintaining consistent temperatures across racks, RDHx systems help protect hardware from thermal stress. This improves uptime and reduces the likelihood of premature component failure.

In facilities where availability is critical, this stability becomes a key operational benefit.

Built for Growth

ColdLogik RDHx units are modular by design. Cooling capacity can be added rack by rack, rather than through major plant upgrades. This approach supports phased expansion and allows operators to respond to changing density requirements without large upfront spend.

It also makes RDHx suitable for both new facilities and retrofit projects.

Making Better Use of Space

Because the cooling system is integrated into the cabinet itself, there is no need for additional floor-mounted cooling equipment or extensive ducting. This frees up white space for IT deployment and simplifies layout planning, particularly in constrained sites.

How RDHx Compares to Traditional Cooling

Room-based air cooling remains common, but it becomes less effective as density increases. High airflow requirements, rising fan energy, and uneven temperature distribution are frequent challenges.

RDHx systems avoid many of these issues by removing heat directly at rack exit. They typically require less power, fewer moving parts, and less ongoing maintenance than large air systems. Over time, this can reduce both operational spend and environmental impact.

A Cooling Strategy That Fits Modern Data Centers

Rear Door Heat Exchangers provide a practical way to manage heat in today’s higher-density environments. By focusing on efficiency, reliability, and flexibility, ColdLogik RDHx supports long-term data centre operation without forcing major changes to existing infrastructure.

Interested in working together?

If you are reviewing your cooling strategy or planning for higher rack densities, we can help you assess whether RDHx is the right fit for your environment.

Get in touch to discuss your requirements.