As digital infrastructure expands rapidly, efficient thermal management has become critical to ensuring the stability and longevity of IT operations. At Coolnet, we continue to lead in the development of precision cooling technologies that deliver intelligent, energy-efficient solutions for today’s demanding data environments. Among them, DX (Direct Expansion) cooling systems remain a cornerstone for modern IT spaces.
Why DX Cooling?
Unlike chilled water systems that rely on centralized infrastructure, DX systems work by using refrigerant to absorb and discharge heat through a closed-loop process. The refrigerant evaporates in the indoor unit as it absorbs heat from IT equipment, then condenses in the outdoor unit to release that heat, completing the cycle. This design makes DX systems compact, easier to deploy, and ideal for smaller or modular setups.
One of the key advantages of DX cooling is its flexibility. Since there’s no need for chilled water pipes within the data hall, the risk of leaks near sensitive servers is significantly reduced. This makes DX systems particularly well-suited for environments such as telecom shelters, edge computing nodes, and network closets—spaces where space and risk must be tightly controlled.
Smarter, More Efficient Performance
Today’s DX systems have evolved beyond static performance. Variable-speed compressors, intelligent expansion valves, and adaptive fans now allow these systems to respond dynamically to real-time load conditions. Instead of operating at full power constantly, the system adjusts cooling output based on actual demand—driving down energy use while maintaining consistent thermal performance.
Some units in Coolnet’s product line, such as those in the Cool-Smart series, bring this intelligent, compact approach to edge applications and small server rooms. With flexible airflow configurations and remote monitoring capabilities, they support both efficient operation and easy scaling. Meanwhile, for larger-scale or high-load environments, our CyberMaster series DX unit integrates high-performance components and advanced control algorithms. These systems are designed to adapt seamlessly to fluctuating heat loads, maintaining stability in dynamic IT environments while optimizing energy consumption. In high-density applications like modular data centers or rack-intensive deployments, close-coupled cooling becomes essential. That’s where Coolnet’s Cool-Row systems come in—delivering precision airflow directly between server racks to prevent hot and cold air mixing. This approach enhances cooling effectiveness and supports redundancy strategies like N+1 for mission-critical uptime. Supporting Sustainable Operations
One of the most promising developments in DX cooling is the introduction of free cooling modes. When outdoor temperatures are low, the system can bypass the compressor and circulate refrigerant using low-power pumps. This significantly reduces energy consumption and system wear, particularly in cooler climates or during nighttime operation. In optimized configurations and favorable climates, DX cooling systems with free cooling modes can significantly reduce energy consumption, helping data centers move closer to lower PUE targets and sustainability goals.
Adding to this is the rise of centralized smart control platforms, which continuously monitor and adjust system behavior based on IT load, ambient temperature, and humidity. These platforms ensure not just thermal stability, but also prevent overcooling—another major source of energy waste.
Conclusion
As IT environments continue to evolve, the demand for smarter, more responsive, and energy-efficient cooling solutions is becoming increasingly urgent. DX precision cooling systems—equipped with variable-speed components, advanced control algorithms, and free cooling capabilities—present a powerful option for meeting the thermal demands of modern digital infrastructure.
By delivering scalable performance, reducing operational risk, and supporting sustainability goals, these systems are helping IT leaders build more resilient and cost-effective operations.
Interested in how DX cooling can optimize your data center or IT space?
Contact the Coolnet team for expert consultation and tailored solutions.
📧 Email: sales@coolnetpower.com
📞 Tel/Whatsapp: +86- 18326091011
