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Effects of Surfactant on Flow Boiling Heat Transfer of Ethylene Glycol/Water Mixtures in a Minitube

Feng, Zhaozan; Wu, Zan LU ; Li, Wei LU and Sundén, Bengt LU (2016) In Heat Transfer Engineering 37(13-14). p.1126-1135
Abstract

This study investigated effects of surfactant sodium dodecylbenzene sulfonate (SDBS) on flow boiling heat transfer of ethylene glycol/water mixtures in a vertical minitube. Experiments were performed using solutions containing 300 ppm by weight of surfactant and the results were compared with those of pure mixture. Local heat transfer coefficient was measured and found to be dependent on the mass quality. Although the surfactant intensifies the vaporization process, it doesn't necessarily enhance the heat transfer coefficient. Heat transfer coefficients were compared at two different mass fluxes, and the results might be explained based on the local flow pattern and the heat transfer mechanism. After a critical quality, higher quality... (More)

This study investigated effects of surfactant sodium dodecylbenzene sulfonate (SDBS) on flow boiling heat transfer of ethylene glycol/water mixtures in a vertical minitube. Experiments were performed using solutions containing 300 ppm by weight of surfactant and the results were compared with those of pure mixture. Local heat transfer coefficient was measured and found to be dependent on the mass quality. Although the surfactant intensifies the vaporization process, it doesn't necessarily enhance the heat transfer coefficient. Heat transfer coefficients were compared at two different mass fluxes, and the results might be explained based on the local flow pattern and the heat transfer mechanism. After a critical quality, higher quality tends to deteriorate heat transfer due to intermittent dryout, and therefore adding a surfactant to generate more vapor may be of negative effect on the flow boiling heat transfer in a minitube, which is contrary to the experience of enhancing nucleate pool boiling heat transfer with trace surfactants.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Heat Transfer Engineering
volume
37
issue
13-14
pages
10 pages
publisher
Taylor & Francis
external identifiers
  • Scopus:84961214804
  • WOS:000373505800006
ISSN
0145-7632
DOI
10.1080/01457632.2015.1111112
language
English
LU publication?
yes
id
1530a04a-9ee1-4586-98e8-5b2eb5e73ee3
date added to LUP
2016-04-26 12:42:31
date last changed
2016-10-13 05:07:01
@misc{1530a04a-9ee1-4586-98e8-5b2eb5e73ee3,
  abstract     = {<p>This study investigated effects of surfactant sodium dodecylbenzene sulfonate (SDBS) on flow boiling heat transfer of ethylene glycol/water mixtures in a vertical minitube. Experiments were performed using solutions containing 300 ppm by weight of surfactant and the results were compared with those of pure mixture. Local heat transfer coefficient was measured and found to be dependent on the mass quality. Although the surfactant intensifies the vaporization process, it doesn't necessarily enhance the heat transfer coefficient. Heat transfer coefficients were compared at two different mass fluxes, and the results might be explained based on the local flow pattern and the heat transfer mechanism. After a critical quality, higher quality tends to deteriorate heat transfer due to intermittent dryout, and therefore adding a surfactant to generate more vapor may be of negative effect on the flow boiling heat transfer in a minitube, which is contrary to the experience of enhancing nucleate pool boiling heat transfer with trace surfactants.</p>},
  author       = {Feng, Zhaozan and Wu, Zan and Li, Wei and Sundén, Bengt},
  issn         = {0145-7632},
  language     = {eng},
  month        = {09},
  number       = {13-14},
  pages        = {1126--1135},
  publisher    = {ARRAY(0xa91b200)},
  series       = {Heat Transfer Engineering},
  title        = {Effects of Surfactant on Flow Boiling Heat Transfer of Ethylene Glycol/Water Mixtures in a Minitube},
  url          = {http://dx.doi.org/10.1080/01457632.2015.1111112},
  volume       = {37},
  year         = {2016},
}