Two-phase cooling meets rising data center power demands

Two-phase cooling is still a developing liquid cooling technology, but its potential is significant. Through continuous innovation, close customer collaboration and extensive in-house testing, CEJN is part of the development of this ongoing technology to level up cooling capabilities in high-performance data centers. 

Building on our experience and expertise in liquid cooling technology, CEJN is exploring next-generation cooling solutions for future data centers and high-performance computing applications. In collaboration with customers, we are developing reliable and environmentally responsible quick connect solutions for several promising refrigerant types. As processing power at the AI-chip level continues to increase, traditional cooling methods are approaching their practical limits, making technologies such as two-phase cooling increasingly relevant. 

“As power densities in next-generation AI chips pass 1,000 to 1,500 watts, traditional single-phase cooling is hitting a physical limit due to unmanageably high flow rate demands”, says Michael Danielsson, product manager DC-Tech at CEJN.

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Two-phase cooling for high-performance data centers

In-house research, development and testing

As part of this effort, work is underway to evaluate cooling media, system performance, reliability and long-term sustainability. Alongside these evaluations, CEJN is developing solutions based on stainless-steel designs and established quick connect technologies, including screw and blind-mate connections. “As our in-house testing capabilities continue to develop, we are building knowledge of how the technology performs under varying operating conditions and how future cooling requirements can be addressed,” Michael concludes.

While its long-term role is still being defined, two-phase cooling is attracting growing interest across the industry as requirements for cooling capacity and energy efficiency continue to rise.

This is Michael Danielsson

Product Manager DC-Tech at CEJN

With a background in mechanical design engineering and hands-on experience at CEJN as both a test engineer and design engineer, he works as a Product Manager within liquid cooling for data centre infrastructure. Having spent years in testing and design, he values a practical, grounded engineering approach to product development and quality. As thermal demands in data centres continue to evolve, he also explores emerging solutions, including two-phase liquid cooling, to support future requirements for high-performance and reliable thermal management.