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Project
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Calyos participates in an innovative project aimed at transforming the thermal management of next-generation power electronics. Conducted in collaboration with Jema, a specialist in power conversion systems, the project focuses on improving the energy efficiency, compactness, and competitiveness of industrial power converters through the integration of disruptive cooling technology.
The project targets plasma-based bovine slurry enrichment systems, which use a new generation of high-power AC-DC converters to power the process.
At lower power levels, these converter systems are typically cooled using forced-air solutions based solely on fans. However, the latest generation of power electronics is reaching power capacities of up to 50 kW. At these levels, forced-air cooling struggles to deliver the required compactness and thermal performance. Moreover, air is a poor heat conductor, limiting cooling efficiency.
As a result, these systems require more advanced cooling solutions to ensure efficiency, compactness, and compatibility with containerized installations.
The traditional way to improve cooling in high-power systems is to add an air-conditioning unit capable of extracting large amounts of heat. Air conditioning cools the entire volume inside the electrical cabinet in order to cool the electronic components.
However, these systems are energy-intensive. They can consume up to 10% of the total system power, representing a direct efficiency loss and a significant operating cost. They are also inherently inefficient because they cool the entire cabinet interior rather than focusing directly on the heat-generating electronics.
This additional energy consumption and cost slows down commercial deployment and large-scale adoption.
While liquid cooling can effectively manage high heat loads, it requires pumps, piping, and external heat exchangers such as chillers. These systems add complexity, maintenance requirements, and additional space constraints.
Calyos' two-phase cooling technology provides an innovative alternative. Thanks to its ability to transport large amounts of heat without pumps, compressors, or moving parts, it enables a simpler, more compact, and more reliable cooling architecture.
By integrating passive two-phase cooling into the converter design, the project aims to replace energy-intensive air-conditioning systems with a highly efficient thermal management solution.
The objective of the collaboration is clear: reduce cooling-related energy consumption and costs by up to 80%. By replacing conventional HVAC-based cooling with a passive thermal management solution, Calyos and Jema aim to:
This project is co-funded by Wallonia (ERDF/FEDER) and the European Union.
With this support, Calyos continues to push the boundaries of thermal innovation, helping industries eliminate unnecessary cooling energy consumption and unlock new levels of performance.
Learn more about the funding here:
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Who 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.
