The two-phase cooling market is on the brink of expansion, with projections indicating it could evolve into a multi-billion dollar industry by 2030. Accelsius, a leader in this shift, recently secured $65 million in Series B funding, positioning itself to meet the increasing demand for advanced cooling solutions in data centers driven by powerful AI hardware.
Industry Context and Growth Drivers
As data centers adapt to support NVIDIA's high-density GPU platforms, the demand for efficient cooling technologies is surging. Traditional air cooling methods are proving inadequate for managing the heat generated by new AI accelerators. According to Omdia, liquid cooling is expected to become mainstream within the next two years, with two-phase cooling at the forefront of this transition. This method employs a dielectric fluid that shifts from liquid to vapor upon contact with hot components, effectively managing heat loads directly at the source.
Accelsius's recent initiatives highlight the company's ambition to lead in this market. At Data Center World, it unveiled the NeuCool IR150, a server rack designed for up to 150 kW densities, featuring a coolant distribution unit (CDU) for straightforward installation. Accelsius claims this "plug-and-play" system will make two-phase cooling accessible to both enterprises and hyperscalers, marking a significant advancement toward broader adoption in the sector.
Strategic Partnerships and Innovations
The company's progress is further enhanced by strategic partnerships and innovative research. Recently, Accelsius announced an agreement to deploy its NeuCool technology at a new 300-megawatt data center campus being developed by DarkNX in Ontario, Canada. This deployment is expected to demonstrate the effectiveness of two-phase cooling in large-scale operations.
Additionally, Accelsius has been working with SK Innovation to explore new coolant fluids that aim to improve efficiency and address sustainability challenges in two-phase cooling. The company is also investigating a "universal cold plate" that could simplify transitions between single-phase and two-phase cooling technologies, potentially easing integration for data centers.
The Future of Cooling Technologies
Looking ahead, the rising density of server configurations is set to drive the adoption of liquid cooling technologies. Analysts suggest that as rack densities increase, two-phase cooling will become the preferred solution for efficient heat management. Josh Claman, CEO of Accelsius, emphasized this trend, stating, "Everything is becoming liquid cooled. We think this means the market is coming to our sweet spot."
Historically, immersion cooling has been used in specific applications such as cryptocurrency mining, but its adoption in traditional data centers has been limited. The two-phase direct-to-chip design allows for targeted cooling of the hottest components, facilitating denser configurations and easier maintenance access. This method avoids many complications associated with full immersion systems, such as fluid contamination and equipment compatibility issues.
Market Outlook
With the anticipated shift toward high-density racks and the growing integration of AI workloads in various computing tasks, the liquid cooling market is expected to see substantial growth over the next five years. Vlad Galabov, Senior Research Director at Omdia, notes that while the two-phase direct or immersion cooling market is small now, it is projected to grow significantly, stating, "In 2030, it becomes a multi-billion dollar market."
As Accelsius continues to innovate and forge key partnerships, it is well-positioned to lead this transformation in data center cooling, capitalizing on the increasing demand for effective and efficient cooling solutions in the age of AI.
