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Mechanistic Considerations for Enhancing Flow Boiling Heat Transfer in Microchannels

[+] Author Affiliations
Satish G. Kandlikar

Rochester Institute of Technology, Rochester, NY

Paper No. ICNMM2015-48819, pp. V001T07A009; 18 pages
doi:10.1115/ICNMM2015-48819
From:
  • ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
  • ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels
  • San Francisco, California, USA, July 6–9, 2015
  • Conference Sponsors: Heat Transfer Division, Fluids Engineering Division
  • ISBN: 978-0-7918-5687-1
  • Copyright © 2015 by ASME

abstract

Research efforts on flow boiling in microchannels were focused on stabilizing the flow during the early part of the last decade. After achieving that goal through inlet restrictors and distributed nucleation sites, the focus has now shifted on improving its performance for high heat flux dissipation. The recent worldwide efforts described in this paper are aimed at increasing the critical heat flux (CHF) while keeping the pressure drop low, with an implicit goal of dissipating 1 kW/cm2 for meeting the high-end target in electronics cooling application. The underlying mechanisms in these studies are identified and critically evaluated for their potential in meeting the high heat flux dissipation goals. Future need to simultaneously increase the CHF and the heat transfer coefficient (HTC) has been identified and hierarchical integration of nanoscale and microscale technologies is deemed necessary for developing integrated pathways toward meeting this objective.

Copyright © 2015 by ASME

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