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Correlations for saturated critical heat flux in microchannels

Wu, Zan LU ; Li, Wei and Ye, Shuang (2011) In International Journal of Heat and Mass Transfer 54(1). p.379-389
Abstract
Experimental results of the saturated-flow boiling critical heat flux (CHF) in microchannels for both multi- and single-channel configurations were obtained from the literature. The collected database contains 629 data points, covering five halogenated refrigerants, nitrogen, and water, for a wide range of operational conditions, and different microchannel dimensions. The whole database was analyzed by using five empirical correlations to verify their respective accuracies. However, none of the existing correlations could predict the entire database precisely. A saturated CHF correlation was proposed by using boiling number, length-to-diameter ratio, and exit quality. Combining with the energy balance equation, the new correlation can... (More)
Experimental results of the saturated-flow boiling critical heat flux (CHF) in microchannels for both multi- and single-channel configurations were obtained from the literature. The collected database contains 629 data points, covering five halogenated refrigerants, nitrogen, and water, for a wide range of operational conditions, and different microchannel dimensions. The whole database was analyzed by using five empirical correlations to verify their respective accuracies. However, none of the existing correlations could predict the entire database precisely. A saturated CHF correlation was proposed by using boiling number, length-to-diameter ratio, and exit quality. Combining with the energy balance equation, the new correlation can predict the overall microchannel database accurately on the whole. It predicts almost 97.0% of the non-aqueous data (except R12 data points located in the macro-scale region) and 94.0% of the water data within the ±30% error band. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Heat and Mass Transfer
volume
54
issue
1
pages
379 - 389
publisher
Pergamon
external identifiers
  • scopus:78449276190
ISSN
0017-9310
language
English
LU publication?
no
id
f40ba869-8b40-41be-8866-a8b6273cd783 (old id 4285432)
date added to LUP
2014-02-06 15:23:18
date last changed
2017-09-24 03:24:04
@article{f40ba869-8b40-41be-8866-a8b6273cd783,
  abstract     = {Experimental results of the saturated-flow boiling critical heat flux (CHF) in microchannels for both multi- and single-channel configurations were obtained from the literature. The collected database contains 629 data points, covering five halogenated refrigerants, nitrogen, and water, for a wide range of operational conditions, and different microchannel dimensions. The whole database was analyzed by using five empirical correlations to verify their respective accuracies. However, none of the existing correlations could predict the entire database precisely. A saturated CHF correlation was proposed by using boiling number, length-to-diameter ratio, and exit quality. Combining with the energy balance equation, the new correlation can predict the overall microchannel database accurately on the whole. It predicts almost 97.0% of the non-aqueous data (except R12 data points located in the macro-scale region) and 94.0% of the water data within the ±30% error band.},
  author       = {Wu, Zan and Li, Wei and Ye, Shuang},
  issn         = {0017-9310},
  language     = {eng},
  number       = {1},
  pages        = {379--389},
  publisher    = {Pergamon},
  series       = {International Journal of Heat and Mass Transfer},
  title        = {Correlations for saturated critical heat flux in microchannels},
  volume       = {54},
  year         = {2011},
}