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Network Analysis of Non-Uniformly Heated Evaporative Micro-Channel Systems

[+] Author Affiliations
Hee Joon Lee

Rensselaer Polytechnic Institute, Troy, NY

Shi-chune Yao

Carnegie Mellon University, Pittsburgh, PA

Paper No. FEDSM-ICNMM2010-30524, pp. 129-136; 8 pages
doi:10.1115/FEDSM-ICNMM2010-30524
From:
  • ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting
  • ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B
  • Montreal, Quebec, Canada, August 1–5, 2010
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5450-1 | eISBN: 978-0-7918-3880-8
  • Copyright © 2010 by ASME

abstract

A network analysis was established to model the array of evaporative micro-channels with possible non-uniformity heating as well as branching of the channels. Iterative solution of the evaporative micro-channel network can be obtained using the Hardy-Cross method together with accurate two-phase head-loss correlations. Based on the experimental evidence, cross-cutting micro-channels reduce the uneven flow distribution in parallel micro-channels at non-uniform heating. Through this network analysis, it is also evident that cross-cutting grooves on parallel micro-channels are effective in reducing non-uniform heating effects and enhancing the uniform wall temperature distribution.

Copyright © 2010 by ASME

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