Mitsubishi Electric Develops World’s First Technology to Use Microbubbles to Generate Millimeter-scale Flow in Channel

Will support carbon neutrality by helping to eliminate the need for external pumps in cooling systems

Mitsubishi Electric Corporation (TOKYO: 6503) announced today that it has developed the world’s first technology to generate millimeter-scale flow within a channel by using microbubbles with a diameter of 10μm as the driving source. Developed through joint research with Suzuki & Namura Laboratory at Faculty of Engineering and Graduate School of Engineering, Kyoto University, this technology is expected to reduce power-consuming external pumps for water cooling in electronic equipment, thereby contributing to carbon neutrality.

Thermal management is becoming increasingly important for electronic devices due to their high output and the growing computation load of AI servers as generative AI rapidly spreads. Electronic devices that generate large amounts of heat require water cooling systems, and demand is expanding for cooling systems that circulate liquid through microchannels to achieve greater efficiency than conventional water cooling systems. To further improve the efficiency of microchannel cooling, efforts are being made to reduce the microchannel width to 100μm or less. However, a powerful external pump is required to circulate liquid in microchannels, so the increasing power consumption of these systems has become an issue.

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