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Loop Heat Pipe (LHP)

Passive heat transfer as an alternative to pumped water cooling systems

February 2021
Gallery Loop Heat Pipe (LHP) 1
Gallery Loop Heat Pipe (LHP) 1


LHPs are a form of passive liquid cooling developed from the principles of traditional heat pipes. They improve performance while providing considerably more design flexibility than traditional heat pipes. Hence they offer a passive alternative to active (pumped) water cooling systems, removing the reliance on pumps and hence reducing energy consumption and reducing maintenance. LHPs work by creating a capillary pumping effect caused by the porous wick structure within the evaporator. The liquid vaporizes on the copper baseplate and moves around the system due to pressure differences. LHP can be used for the following applications: Power Electronics (IGBTs, MOSFETs, SiC & GaN components), processors and servers, electronics & photonics (LEDs, Lasers, Antennas, Peltier Modules). As a passive solution competing against active (pumped) alternatives, Calyos offers its customers an eco-friendly solution for cooling the latest high power electronic components.

Label Date February 19, 2021
By Calyos
From Belgium
Maturity stage Small scale commercialization
Looking For Network, Visibility, Partners, Credibility

The environmental benefits

  • 100% less energy usage than active (pumped) water heat transfer systems
  • The latent heat of vaporization (two-phase) provides a heat transfer coefficient 250% better than single-phase water
  • Reduce up to 100% of energy usage involved in cooling systems
  • Increase the lifetime of cooling systems up to 40 years, with no maintenance

The Financial benefits

  • ~25% cheaper than mainstream water cooling solutions as there is no requirement for a pump/distribution unit
  • Save over 80% of maintenance costs by removing fans and pumps from cooling systems

Activity Region

  • /
  • Headquarters
  • Activity

Company Profile


We are specialists in taking traditional heat pipe technology to the next level. Let's remove your thermal limitations.

View company profile Solution website
Headquarters 6040 Charleroi, Belgium
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Calyos has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.