Pushing the boundaries
of thermal efficiency

JJ Cooling Innovation is an applied research-oriented company providing consulting services to clients on state-of-the-art cooling systems. With over 25 years of experience in design, prototyping and testing of complete micro-cooling systems, the owners of the company have leveraged the knowledge acquired in the academic domain to real-world and practical cases to provide clients with a key competitive advantage by introducing passive two-phase cooling to low to high power density electronics.


Our Vision

Continuous development of breakthrough technologies that provide a competitive financial edge to our clients and contribute to the development of a sustainable world


Our Mission

Application centered company that develops real and practical solutions from state of the art research


Our Values

  • Continuous innovation
  • Client centric
  • Social and cooperative

Design-oriented in-house simulation codes

  • Thermosyphon/pump/compressor-driven cooling loops
  • Double-sided microchannel plates for single-phase and two-phase cooling
  • Evaporator air coils
  • Air-cooled condenser coils
  • Ultra-Compact heat exchangers with double-side microchannels
  • Tube-in-tube condensers
  • Shell-and-tube flooded and falling film evaporators
  • Plate heat exchangers (PHE's for evaporators and condensers)
  • Pulsating heat pipes (PHP)

About Us

As a spin-off from a world renown laboratory at EPFL,
over 350 unit contributions to the scientific community 






Participations in Events


Supervised Ph.D

Meet Our Team

A team of experienced thermal engineers



Co-Founder & CEO

Biography: Ph.D. in Mechanical Engineering from the Federal University of Santa Catarina.

Skills: Design and development of multiple experimental facilities to characterize thermo-hydraulic performance and control of advanced cooling systems. Development of novel hybrid active and passive cooling systems for high heat flux electronic components.

John R.


Biography: Ph.D. in Mechanical Engineering from Oxford University. Associate professor at University of Michigan State, and consulting engineer for his own firm. Swiss Federal Institute of Technology (EPFL) director for both the Laboratory of Heat and Mass Transfer (LTCM) and Doctoral Program In Energy (EDEY).

Skills: Two-phase flows and heat transfer in microchannels, two-phase flows control for electronics cooling, hybrid cooling cycles. Speed control or oil-free pumps and compressors, passive systems and energy recovery.



Thermal Engineer


Thermal Engineer


Thermal Engineer

Big data pRocessing and Artificial Intelligence at the Network Edge (BRAINE)

Development and implementation of micro-thermosyphon cooling system for innovative Edge Micro Data Center

H2020 – ECSEL program (ongoing)
3-year passive two-phase cooling of datacenters technology development
Partners: 27 from 14 countries
Overall budget: 16M€

Link : braine-project.eu

Pulsating heat pipe for hybrid propulsion systems (PHP2)

Performing numerical simulation of PHPs for aerospace industrial application. 

H2020-Clean Sky2 program (ongoing)
4-year passive two-phase technology development
Partners: Altran and Provides Metalmeccanica
Overall budget 1.5M€

Link : php2-project.eu

Advanced Passive Thermal Technology for Cooling High Power Datacenter Racks (PCOOLDATA)

Eurostars project (ongoing)
3-year passive two-phase cooling of datacenters
Partners: Nokia and Provides Metalmeccanica
Overall budget: 1.8M€

Passive Thermosyphon Cooling of Photonics Telecommunications Transmitters                                               

In association with Nokia Bell Laboratory, USA (completed)

4-year development completed in 2019

Thermal-hydraulic performance of high capacity heat exchangers and compact heat exchangers

Designed and managed the construction of a new high technology laboratory, including experimental facilities, calibration procedures, software for data acquisition and processing, and technical training

Wettability and charge reduction of CO2 heat exchanger

Improved the thermal performance of CO2 heat exchangers while reducing the heat exchanger volume, and consequently reducing the necessary charge of working fluid

Investigation of thermo-hydraulic performance of dry-coolers

Analyzed the dry-coolers energetic performance with an experimental campaign and developed a purpose specific simulation software

Our Clients


Don't hesitate to contact us
We are ready for offers and cooperation


EPFL Innovation Park
Bâtiment A
CH-1015 Lausanne


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