Introduction: The Urgent Need for Advanced Cooling Technologies in High-Performance Servers
The escalating demands of High-Performance Computing (HPC), Artificial Intelligence (AI), and machine learning have pushed server rack densities far beyond the capabilities of conventional air cooling. Today’s powerful CPUs and GPUs can generate heat loads exceeding 30 kilowatts per rack, requiring a paradigm shift in thermal management. Simply circulating more cold air is no longer sufficient or energy efficient.
This has spurred the adoption of highly efficient, targeted technologies, such as liquid cooling, which must be seamlessly integrated with reliable room-level environmental control. At Coolnet, we specialize in providing this multi-layered thermal strategy.1 Through our independent Research and Development and production, we offer both cutting-edge liquid cooling solutions and robust server room AC units, all backed by our 1 to 2-year product quality guarantee. We are committed to optimizing efficiency while ensuring data center stability.
Key Features and Technological Advantages of Server Liquid Immersion Cooling System
The server liquid immersion cooling system represents the ultimate solution for extreme heat loads. This technology involves submerging servers and other IT hardware directly into a dielectric, non-conductive fluid.
Our dedicated liquid cooling solutions, including the Immersion Cooling Solution and the Chilled Water Rear Door Heat Exchanger for Data Center Cooling, deliver transformative advantages:
Exceptional Thermal Efficiency: Liquid has a heat capacity far greater than air, allowing the system to remove heat directly from the source, dramatically improving cooling performance compared to air-based methods.
Optimal Heat Transfer: The direct contact of the liquid medium in the Immersion Cooling Solution achieves a highly efficient and homogeneous heat transfer process, making it suitable for high-density, high-power compute environments.
Energy Consumption: By simplifying the cooling loop and reducing the reliance on high-powered traditional air conditioning and server fans, these systems are fundamentally designed to reduce the overall energy demand of the cooling infrastructure.
Noise Reduction and Hardware Lifespan: The removal of server fans drastically reduces ambient noise. Furthermore, the stable, controlled liquid environment prevents dust and humidity exposure, potentially increasing the lifespan and stability of IT components.
The Role of Server Room AC Units in Basic Cooling and Environmental Control
While liquid immersion cooling handles the concentrated heat from high-performance servers, a data center environment still requires robust, dependable air conditioning for two crucial reasons.
Firstly, even with a liquid-cooled deployment, some heat inevitably escapes the tanks into the ambient air, and there is always auxiliary equipment (like network gear, power distribution units, and storage arrays) that remains air-cooled. Secondly, a precision server room AC units system is essential for environmental control, maintaining precise temperature and humidity conditions for personnel, safety equipment, and the facility itself.
Our solution for this large-capacity base-level control is the CyberMaster Series Inverter Type PAC (30.6-100.2kW) DX Unit. This advanced PAC unit is designed for continuous, high-sensible heat operation, making it ideal for large computer rooms and data halls where efficiency is paramount. The CyberMaster Series, with its inverter compressor and Electronic Expansion Valve, provides dynamic capacity output, ranging from a Total Cooling Capacity of 30.6 kilowatts up to 100.2 kilowatts. This adaptive efficiency technology reduces annual energy consumption by an estimated 25 percent compared to fixed-speed units. It is equipped with a high-efficiency backwards curved centrifugal fan, capable of long-distance air delivery to maintain precise temperature control and humidity control for the entire room.
The Synergistic Application Value of Liquid Immersion Cooling and Data Center Air Conditioning
The true value of advanced cooling lies in the synergy between the server liquid immersion cooling system and the highly efficient server room AC units. This is a multi-level cooling strategy that delivers superior performance and redundancy.
Targeted Heat Attack: Solutions like our Immersion Cooling Solution directly remove the heaviest heat loads from the densest servers.6
Environmental Stabilization: The Coolnet CyberMaster PAC unit then manages the residual ambient heat and maintains the strict temperature and humidity parameters required by non-liquid-cooled components and the facility as a whole.
Redundancy and Failover: Should the liquid cooling system require maintenance, the high-capacity PAC units provide a necessary layer of temperature control to prevent rapid thermal runaway, safeguarding the IT assets.
Energy Optimization: This combined approach allows the PAC units to run more efficiently because their primary load (high-density racks) has been transferred to the immersion system. Products like our Chilled Water Rear Door Heat Exchanger also provide an air-side assist to existing PAC units, increasing overall efficiency.
We ensure that these technologies communicate seamlessly, enabling optimized energy use across the entire thermal landscape.
Conclusion: Improving Server Operating Efficiency and Stability through Multi-Level Cooling Solutions
The path to future-proof, sustainable data centers requires integrating multiple cooling technologies tailored to specific heat loads. By combining the hyper-efficient heat removal of our dedicated liquid cooling systems, such as the Immersion Cooling Solution, with the reliable, high-capacity environmental management of our Coolnet server room AC units like the CyberMaster Series, we offer a comprehensive, multi-level cooling solution.
This strategy enhances server operating efficiency, dramatically lowers PUE, and ensures stability for even the most demanding HPC and AI workloads. As an OEM dedicated to independent R&D and production, we empower our partners to achieve maximum density and performance, all guaranteed by our 1 to 2-year quality assurance.
