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Pool Boiling CHF Enhancement on a Zircaloy-4 Surface With Micro/Nano Scale Modification

[+] Author Affiliations
Ho Seon Ahn, Chan Lee, Hang Jin Jo, Soon Ho Kang, Joonwon Kim, Moo Hwan Kim

POSTECH - Pohang University of Science and Technology, Pohang, Republic of Korea

Hyungdae Kim

Massachusetts Institute of Technology, Cambridge, MA

Paper No. MNHMT2009-18311, pp. 525-531; 7 pages
doi:10.1115/MNHMT2009-18311
From:
  • ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer
  • ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1
  • Shanghai, China, December 18–21, 2009
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 978-0-7918-4389-5 | eISBN: 978-0-7918-3864-8
  • Copyright © 2009 by ASME

abstract

The need to operate thermal systems, including those in nuclear power plants, below the critical heat flux (CHF) requires inconvenient compromises between economy and safety. This has led to much research aimed at enhancing the CHF. CHF enhancement was recently noticed in nanofluids where the heating surface was fouled by nanoparticles. We attempted to imitate the micro/nano multi-scale structure of nanoparticle fouling by surface modification. In this study, surface treatment was used to change the surface wettability of a Zircaloy-4 heater. A pool boiling apparatus was developed based on the results of the surface treatment, and an experimental study was performed to investigate the increase in CHF.

Copyright © 2009 by ASME

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