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Pool boiling of HFE-7200 on nanoparticle-coating surfaces: Experiments and heat transfer analysis

Cao, Zhen LU ; Wu, Zan LU ; Pham, Anh Duc; Yang, Yanjie LU ; Abbood, Sahar LU ; Falkman, Peter; Ruzgas, Tautgirdas; Albèr, Cathrine and Sundén, Bengt LU (2018) In International Journal of Heat and Mass Transfer 133. p.548-560
Abstract
In the present study, an electrophoretic deposition method was employed to modify copper surfaces with
Cu-Zn (100 nm) nanoparticles. Pool boiling heat transfer of HFE-7200 on the modified surfaces was experimentally studied. The results showed that the heat transfer coefficient on the modified surfaces was significantly enhanced compared with that on a smooth surface, e.g., a maximum 100% enhancement,
while the maximum superheat on the modified surfaces was around 20 K lower than that on the smooth surface. However, the critical heat flux (CHF) was not improved considerably, and supplementary tests indicated that the wickability of HFE-7200 was almost the same on the modified surfaces and the smooth surface. The departure diameters... (More)
In the present study, an electrophoretic deposition method was employed to modify copper surfaces with
Cu-Zn (100 nm) nanoparticles. Pool boiling heat transfer of HFE-7200 on the modified surfaces was experimentally studied. The results showed that the heat transfer coefficient on the modified surfaces was significantly enhanced compared with that on a smooth surface, e.g., a maximum 100% enhancement,
while the maximum superheat on the modified surfaces was around 20 K lower than that on the smooth surface. However, the critical heat flux (CHF) was not improved considerably, and supplementary tests indicated that the wickability of HFE-7200 was almost the same on the modified surfaces and the smooth surface. The departure diameters of bubbles were recorded by a high speed camera, which were compared with several models in literature. Active nucleation site sizes were evaluated by the Hsu nucleation theory and active nucleation site densities were estimated by appropriate correlations.
In addition, a heat transfer model, considering natural convection, re-formation of thermal boundary layer and microlayer evaporation, was formulated to predict the heat transfer on the modified surfaces and the smooth surface. A relatively good prediction was achieved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Pool boiling, Heat transfer, Nanoparticles, Bubble dynamics
in
International Journal of Heat and Mass Transfer
volume
133
pages
12 pages
publisher
Pergamon
external identifiers
  • scopus:85059134443
ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2018.12.140
language
English
LU publication?
yes
id
a04df5e7-8d85-4c9f-a62c-2b9a19d35225
date added to LUP
2019-01-07 10:45:57
date last changed
2019-08-14 04:30:09
@article{a04df5e7-8d85-4c9f-a62c-2b9a19d35225,
  abstract     = {In the present study, an electrophoretic deposition method was employed to modify copper surfaces with<br/>Cu-Zn (100 nm) nanoparticles. Pool boiling heat transfer of HFE-7200 on the modified surfaces was experimentally studied. The results showed that the heat transfer coefficient on the modified surfaces was significantly enhanced compared with that on a smooth surface, e.g., a maximum 100% enhancement,<br/>while the maximum superheat on the modified surfaces was around 20 K lower than that on the smooth surface. However, the critical heat flux (CHF) was not improved considerably, and supplementary tests indicated that the wickability of HFE-7200 was almost the same on the modified surfaces and the smooth surface. The departure diameters of bubbles were recorded by a high speed camera, which were compared with several models in literature. Active nucleation site sizes were evaluated by the Hsu nucleation theory and active nucleation site densities were estimated by appropriate correlations.<br/>In addition, a heat transfer model, considering natural convection, re-formation of thermal boundary layer and microlayer evaporation, was formulated to predict the heat transfer on the modified surfaces and the smooth surface. A relatively good prediction was achieved.},
  author       = {Cao, Zhen and Wu, Zan and Pham, Anh Duc and Yang, Yanjie and Abbood, Sahar and Falkman, Peter and Ruzgas, Tautgirdas and Albèr, Cathrine  and Sundén, Bengt},
  issn         = {0017-9310},
  keyword      = {Pool boiling,Heat transfer,Nanoparticles,Bubble dynamics},
  language     = {eng},
  month        = {12},
  pages        = {548--560},
  publisher    = {Pergamon},
  series       = {International Journal of Heat and Mass Transfer},
  title        = {Pool boiling of HFE-7200 on nanoparticle-coating surfaces: Experiments and heat transfer analysis},
  url          = {http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.12.140},
  volume       = {133},
  year         = {2018},
}