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• Author name

  oscar.hernandez
• January 29, 2025

Overview of Single-Phase Immersion Cooling Systems for Data Centers

Single-phase immersion cooling systems represent an innovative approach to managing heat in data centers, particularly as the demand for energy-efficient solutions continues to grow. This method allows for the direct immersion of electronic hardware in a thermally conductive liquid, which enhances heat dissipation and overall cooling efficiency.

Analysis of Current Patents and Technologies

Recent developments in this area include several patents that focus on the use of hydrocarbons and other materials for immersion cooling:

• Neste Patent (US20230313015A1): Neste has filed a patent for a renewable paraffinic composition specifically designed for direct single-phase immersion cooling. This composition contains at least 80 wt-% paraffins in the C16-C19 range and is notable for its thermal properties, such as a volumetric specific heat ranging from 1.60 MJ/(m³K) to 1.90 MJ/(m³K) and a thermal conductivity between 0.11 W/(m·K) and 0.15 W/(m·K). The system operates effectively within a temperature range of 15°C to 90°C, making it suitable for cooling electronic hardware like servers.


• Baidu Patent (US20200015383A1): This patent outlines an immersion cooling system for data centers developed by Baidu USA LLC. It highlights the growing interest in immersion cooling technologies as a solution to the increasing thermal management challenges faced by modern data centers.


• Cooler Master Patent (US20220225538A1): This patent details a single-phase immersion cooling system and method, showcasing the versatility and advancements in cooling technologies that can be applied in various data center configurations.


• Microsoft Patent (US20220330452A1): This patent focuses on systems and methods for immersion-cooled data centers, emphasizing the ongoing innovation in this field.

Benefits of Single-Phase Immersion Cooling

The advantages of single-phase immersion cooling systems, particularly those utilizing hydrocarbon-based coolants, include:

• Lower Total Cost of Ownership (TCO): Immersion cooling can achieve TCO savings of up to 30% compared to traditional air or liquid cooling systems.


• Reduced Water Consumption: This method supports a 91% reduction in water usage, addressing environmental sustainability concerns.


• Improved Energy Efficiency: Data centers utilizing immersion cooling can achieve a Power Usage Effectiveness (PUE) significantly lower than traditional cooling methods, with some systems reporting PUE values just above 1.


• Enhanced Hardware Longevity: Immersion cooling can extend the lifespan of IT hardware by approximately 20%, reducing replacement costs and downtime.

Conclusion

In conclusion, the advancements in single-phase immersion cooling systems, particularly those employing renewable and hydrocarbon-based compositions, present significant opportunities for data centers to enhance their cooling efficiency while addressing environmental concerns. The patents filed by companies such as Neste and Baidu illustrate the ongoing innovation in this field, paving the way for more sustainable and effective cooling solutions in the rapidly evolving landscape of data centers.