Passive Two-Phase Cooling

Unlock your electronics' potential

Empowering the AI, HPC and 5G markets, we lead with cutting-edge technology and consulting services for high-power electronics cooling systems. Our solutions drive efficiency, sustainability and reliability, ensuring peak performance in rapidly evolving landscapes.

Funders and Partners

BRAINE has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 876967





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PHP2 has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 821375
TheMa4HERA Co-funded by the European Union under grant agreement 101102008
SHIFT2DC Co-funded by the European Union under grant agreement 101136131
PCOOLDATA project has received funding from InnoSuisse through Eureka and the Eurostars programme, which is co-funded by the European Commission as part of the European Partnership on Innovative SMEs








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AI VD






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Naturally, the best solution

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Two-phase heat tansfer offers maximum efficiency, ideally suited for high heat flux applications.

No moving part !

No moving part icon

We propose passive solutions to meet your cooling needs, by relying on naturally occuring phenomena.

CONDENSER
Riser
Animation showing the working principle of Loop-Thermosyphon cooling systems.
Downcomer
Evaporator

Loop Thermosyphon (LTS)

  • Gravity-driven cooling
  • Requires elevation between evaporator and condenser
  • Applications include cooling of servers and racks, batteries, avionics, ...
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Condenser
An animation showing the operation principle of pulsating heat pipes.
Evaporator

Pulsating Heat Pipes (PHP)

  • Self-induced flow by pressure fluctuations in the boiling and condensing zones
  • Can operate in earth, micro and hyper gravity, in any orientation
  • Applications include cooling of portable electronics, batteries, avionics, ...
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Interested in compact refrigeration cooling solutions ?

Icon of a piston symbol for compressor based system

We also have extensive experience with vapor compression systems

CONDENSER
Expansion device
Animation showing the working principle of refrigeration cooling systems.
Compressor
Evaporator

Refrigeration systems

  • Mechanically-driven cooling
  • Requires electrical input
  • Applications include air (de)humidification, HVAC&R, thermal management / temperature control of electronics
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Simulate and optimize before prototyping

Icon showing a screen with a mathematical curve and a pen. Symbol for simulation
Our in-house simulation tools can save you weeks in product development and reduce testing costs
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Test, analyse and validate

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Our laboratory is equipped with instruments and facilities to control and characterize cooling systems, from prototype to final product
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Recent work

BRAINE

Big data pRrocessing and Artificial Intelligence at the Network Edge
A 3D representation of JJ Cooling dual loop thermosyphon system

Loop Thermosyphon (LTS)

Compact or dual loop thermosyphon air-cooled for 2U servers
A schematic of a server rack cooled by a loop thermosyphon system.

PCOOLDATA

Advanced Passive Thermal Technology for Cooling High Power Datacenter Racks
Logo of the PHP2 european project.

PHP2

Pulsating Heat Pipes for Hybrid Propulsion Systems

Shift2DC

Smarter, more efficient, and environmentally friendly energy infrastructures through direct current (DC) solutions

TheMa4HERA

Thermal Management for the Hybrid Electric Regional Aircraft

News

Address

EPFL Innovation Park
Building A
CH-1015 Lausanne
Switzerland

Contact

Email: info@jjcooling.com
Phone: +41 78 976 00 18

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© JJ Cooling Innovation Sàrl 2023