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High Flux Heat Removal With Microchannels: A Roadmap of Challenges and Opportunities (Keynote)

[+] Author Affiliations
Satish G. Kandlikar

Rochester Institute of Technology, Rochester, NY

Paper No. ICMM2005-75086, pp. 59-68; 10 pages
  • ASME 3rd International Conference on Microchannels and Minichannels
  • ASME 3rd International Conference on Microchannels and Minichannels, Parts A and B
  • Toronto, Ontario, Canada, June 13–15, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4185-5 | eISBN: 0-7918-3758-0
  • Copyright © 2005 by ASME


Heat fluxes in IC chips and other electronics equipment have reached the current limits of air cooling technology. Some of the applications require heat fluxes well beyond the limit of 100 W/cm2 , requiring advanced cooling solutions. Liquid cooling technology has been receiving attention as the advances in single-phase liquid cooling in microchannels have shown considerable promise. The extension of compact heat exchanger technology to microscale applications offers many new possibilities. The liquid cooling technology is expected to reach heat dissipation rates as high as 10 MW/m2 (1 kW/cm2 ) with enhanced microchannels (with a junction-to-air temperature difference of 50 °C). The challenges facing flow boiling systems are also evaluated. This paper reviews the fundamental technological developments in liquid cooling as well as in flow boiling, and presents possible solutions in integrating the cooling system with a building’s HVAC unit in a large server type application. The opportunities and challenges are described in an attempt to provide the roadmap of cooling technology for cooling high flux devices in the next decade.

Copyright © 2005 by ASME
Topics: Heat , Microchannels



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