Experiments are performed to investigate saturation boiling of degassed PF-5060 dielectric liquid on microporous copper dendrite surface layers deposited on Cu substrates. The electrochemically deposited surface layers are of different thicknesses (, , and ). The thickest layer gives the best results: the saturation CHF of occurs at a surface superheat of only 2.9 K and the maximum nucleate boiling heat transfer coefficient, , near the end of the fully developed nucleate boiling region, is . In addition, nucleate boiling ensues at a surface temperature slightly above saturation , with no temperature excursion. The temperature excursions before initiating boiling on the and thick Cu nanodendrite surface layers are small (3.7 K and 6 K), corresponding to surface temperatures of and , respectively. These temperatures are much lower than recommended for reliable operation of most silicon electronics and central processor units.
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Research Papers
Enhancement of Saturation Boiling of PF-5060 on Microporous Copper Dendrite Surfaces
Mohamed S. El-Genk,
Mohamed S. El-Genk
Fellow ASME
Regents’ Professor, Department of Chemical and Nuclear Engineering, and Department of Mechanical Engineering,
e-mail: mgenk@unm.edu
University of New Mexico
, Albuquerque, NM 87131; Director of Institute for Space and Nuclear Power Studies (ISNPS), University of New Mexico
, Albuquerque, NM 87131
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Amir F. Ali
Amir F. Ali
Research Assistant, ISNPS,
University of New Mexico
, Albuquerque, NM 87131; Department of Mechanical Engineering, University of New Mexico
, Albuquerque, NM 87131
Search for other works by this author on:
Mohamed S. El-Genk
Fellow ASME
Regents’ Professor, Department of Chemical and Nuclear Engineering, and Department of Mechanical Engineering,
University of New Mexico
, Albuquerque, NM 87131; Director of Institute for Space and Nuclear Power Studies (ISNPS), University of New Mexico
, Albuquerque, NM 87131e-mail: mgenk@unm.edu
Amir F. Ali
Research Assistant, ISNPS,
University of New Mexico
, Albuquerque, NM 87131; Department of Mechanical Engineering, University of New Mexico
, Albuquerque, NM 87131J. Heat Transfer. Jul 2010, 132(7): 071501 (9 pages)
Published Online: April 28, 2010
Article history
Received:
June 2, 2009
Revised:
November 24, 2009
Online:
April 28, 2010
Published:
April 28, 2010
Citation
El-Genk, M. S., and Ali, A. F. (April 28, 2010). "Enhancement of Saturation Boiling of PF-5060 on Microporous Copper Dendrite Surfaces." ASME. J. Heat Transfer. July 2010; 132(7): 071501. https://doi.org/10.1115/1.4000975
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