Heat transfer correlations for elongated bubbly flow in flow boiling micro/minichannels
(2016) In Heat Transfer Engineering p.985-993- Abstract
- An improved conventional-to-micro/minichannel criterion was proposed by using the Bond number and the liquid Reynolds number. In micro/minichannels, bubbles tend to be confined and elongated in the channel and the conventional two-phase flow theory loses its applicability. As significant disagreement in experimental trends and heat transfer mechanisms was reported for flow boiling in micro/minichannels in the literature, it is not possible to explain the discrepancy and predict all data points by a single correlation without considering the different flow patterns. In this study, heat transfer correlations for elongated bubbly flow in flow boiling micro/minichannels were developed based on a collected micro/minichannel heat transfer... (More)
- An improved conventional-to-micro/minichannel criterion was proposed by using the Bond number and the liquid Reynolds number. In micro/minichannels, bubbles tend to be confined and elongated in the channel and the conventional two-phase flow theory loses its applicability. As significant disagreement in experimental trends and heat transfer mechanisms was reported for flow boiling in micro/minichannels in the literature, it is not possible to explain the discrepancy and predict all data points by a single correlation without considering the different flow patterns. In this study, heat transfer correlations for elongated bubbly flow in flow boiling micro/minichannels were developed based on a collected micro/minichannel heat transfer database. The newly developed correlations not only can present a decent overall accuracy, but also estimate the parametric trends correctly. More than 97% of the data points can be predicted by the proposed correlations within a ±50% error band for elongated bubbly flow. Also, a flow-pattern-based model can be developed by combining the developed elongated bubbly flow correlations with previous annular flow correlations for predicting flow boiling heat transfer in micro/minichannels. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5424898
- author
- Wu, Zan LU and Sundén, Bengt LU
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Heat Transfer Engineering
- pages
- 985 - 993
- publisher
- Taylor & Francis
- external identifiers
-
- scopus:84958180338
- wos:000370967300009
- ISSN
- 1521-0537
- DOI
- 10.1080/01457632.2015.1098269
- language
- English
- LU publication?
- yes
- id
- 43f88fb3-512c-4a2b-b7c5-e4649dc000f5 (old id 5424898)
- date added to LUP
- 2016-04-04 07:59:49
- date last changed
- 2022-04-23 08:55:59
@article{43f88fb3-512c-4a2b-b7c5-e4649dc000f5,
abstract = {{An improved conventional-to-micro/minichannel criterion was proposed by using the Bond number and the liquid Reynolds number. In micro/minichannels, bubbles tend to be confined and elongated in the channel and the conventional two-phase flow theory loses its applicability. As significant disagreement in experimental trends and heat transfer mechanisms was reported for flow boiling in micro/minichannels in the literature, it is not possible to explain the discrepancy and predict all data points by a single correlation without considering the different flow patterns. In this study, heat transfer correlations for elongated bubbly flow in flow boiling micro/minichannels were developed based on a collected micro/minichannel heat transfer database. The newly developed correlations not only can present a decent overall accuracy, but also estimate the parametric trends correctly. More than 97% of the data points can be predicted by the proposed correlations within a ±50% error band for elongated bubbly flow. Also, a flow-pattern-based model can be developed by combining the developed elongated bubbly flow correlations with previous annular flow correlations for predicting flow boiling heat transfer in micro/minichannels.}},
author = {{Wu, Zan and Sundén, Bengt}},
issn = {{1521-0537}},
language = {{eng}},
pages = {{985--993}},
publisher = {{Taylor & Francis}},
series = {{Heat Transfer Engineering}},
title = {{Heat transfer correlations for elongated bubbly flow in flow boiling micro/minichannels}},
url = {{http://dx.doi.org/10.1080/01457632.2015.1098269}},
doi = {{10.1080/01457632.2015.1098269}},
year = {{2016}},
}