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Press Release
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At Data Center World Paris, Calyos joined forces with Valeo to unveil a cutting-edge hybrid air/two-phase cooled server, presented on Valeo’s stand. The technology marks a significant step forward in data center cooling innovation, combining Calyos’ advanced passive two-phase cooling technology with Valeo’s extensive experience in automotive thermal systems.
Originating from the automotive, energy and personal computing industry, Calyos has a proven track record in developing passive two-phase cooling solutions for high-performance, compact environments. Today, we are leveraging that same engineering expertise to meet the thermal demands of data centers, where efficiency, reliability, and sustainability are highly required.
As server architectures dissipate higher heat flux and become more compact, traditional air cooling reaches its limits. Heat sinks mounted atop processors are restricted by surface area, capping thermal performance. Calyos’ approach is simple yet powerful:
Relocate the heat exchange area.
By extracting heat from larger, more optimal surfaces within the system, the hybrid solution transfers greater thermal loads—without compromising compactness or simplicity.
Integrated passively with air cooling, the system delivers two major and unique benefits:
“The goal isn’t to replace air cooling. It’s to make it better.”
We extend our thanks to Valeo team for their collaboration, and shared vision. Valeo’s deep expertise in automotive-grade thermal systems and commitment to innovation were key in bringing this hybrid demonstration to life.
Together, Calyos and Valeo are demonstrating that cross-sector collaboration—bridging automotive and digital infrastructure—can unlock powerful new solutions for the future of sustainable computing.
Further reading:
Calyos, Valeo & 2CRSI at Data Center World ParisWho We Are
Calyos is a leader in the design and manufacture of two-phase thermal management systems. Building on our heritage from Euro Heat Pipes (EHP) and their space technology expertise, we specialize in innovative cooling solutions that tackle the thermal challenges of tomorrow.
What We Do
We engineer advanced cooling technologies, including loop heat pipes, micro-channel heat pipes, and pulsating heat pipes, to optimize thermal performance across a variety of applications. Typically these include: power electronics, processors, and batteries, but we don't stop there we are continuing to develop and produce fully customizable solutions for other specific needs, for example e-motors and fuel cells.
Where We Operate
Calyos is headquartered in Charleroi, Belgium, where our engineering and production teams work side by side in a state-of-the-art facility. From this base, we serve a global clientele, providing our cutting-edge solutions across North America, Asia, Europe, and South America.
When We Started
Calyos was incorporated in 2014 as a spin-off from Euro Heat Pipes (EHP), which was established in 2001 and has become a major player in the European satellite market. Since then, Calyos has been adapting and evolving EHP's space-grade cooling technologies for terrestrial applications.
Why We Matter
Our mission is to lead the industry towards adopting the most effective and sustainable thermal management solutions. We aim to address the most pressing thermal challenges in the data-driven and electrified environments of today, leveraging passive cooling technologies to achieve superior efficiency and environmental stewardship.
How We Succeed
Our success is driven by our commitment to four core values:
1. Applied Knowledge - Transforming deep technical expertise into market-ready solutions.
2. Better Together - Emphasizing collaboration with all stakeholders to enhance our collective success.
3. Inherent Flexibility - Adapting our solutions and practices to keep pace with evolving market demands.
4. Continuous Research - Persistently innovating to maintain our leadership in thermal technology.
Ben Sutton
Marketing & Business Development Manager
