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Electrophoretic deposition surfaces to enhance HFE-7200 pool boiling heat transfer and critical heat flux

Cao, Zhen LU ; Wu, Zan LU ; Pham, Anh Duc and Sundén, Bengt LU (2019) In International Journal of Thermal Sciences 146.
Abstract

Modulated nanoparticle-coating surfaces were fabricated by an improved electrophoretic deposition technique in this study. Pool boiling experiments were studied for HFE-7200 on the modulated nanoparticle-coating surfaces, with a smooth surface and uniform coating surfaces as comparison. It was found that the present modulated coating surfaces can enhance the heat transfer coefficient and the critical heat flux by 60% and 20%–40%, respectively, in comparison to the smooth surface, while the uniform coating surface can improve heat transfer coefficients by maximum 100%, but cannot enhance critical heat fluxes. Heat transfer on the modulated nanoparticle-coating surfaces was theoretically analyzed by a mechanistic model which considered... (More)

Modulated nanoparticle-coating surfaces were fabricated by an improved electrophoretic deposition technique in this study. Pool boiling experiments were studied for HFE-7200 on the modulated nanoparticle-coating surfaces, with a smooth surface and uniform coating surfaces as comparison. It was found that the present modulated coating surfaces can enhance the heat transfer coefficient and the critical heat flux by 60% and 20%–40%, respectively, in comparison to the smooth surface, while the uniform coating surface can improve heat transfer coefficients by maximum 100%, but cannot enhance critical heat fluxes. Heat transfer on the modulated nanoparticle-coating surfaces was theoretically analyzed by a mechanistic model which considered free convection, transient conduction and microlayer evaporation. The heat transfer can be predicted by the model, especially at low-to-moderate heat fluxes. Additionally, referring to the bubble visualization at critical heat fluxes, possible mechanisms to trigger critical heat fluxes were discussed. Afterwards, a critical heat flux model originating from the Zuber hydrodynamic instability model, was employed to predict the experimental results, showing a good prediction ability.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bubble dynamics, Critical heat flux, Nanoparticle, Pool boiling
in
International Journal of Thermal Sciences
volume
146
publisher
Elsevier
external identifiers
  • scopus:85072273097
ISSN
1290-0729
DOI
10.1016/j.ijthermalsci.2019.106107
language
English
LU publication?
yes
id
f58fe7f0-2970-4e73-9692-d682bfc025f8
date added to LUP
2019-09-27 14:06:22
date last changed
2019-10-23 06:23:18
@article{f58fe7f0-2970-4e73-9692-d682bfc025f8,
  abstract     = {<p>Modulated nanoparticle-coating surfaces were fabricated by an improved electrophoretic deposition technique in this study. Pool boiling experiments were studied for HFE-7200 on the modulated nanoparticle-coating surfaces, with a smooth surface and uniform coating surfaces as comparison. It was found that the present modulated coating surfaces can enhance the heat transfer coefficient and the critical heat flux by 60% and 20%–40%, respectively, in comparison to the smooth surface, while the uniform coating surface can improve heat transfer coefficients by maximum 100%, but cannot enhance critical heat fluxes. Heat transfer on the modulated nanoparticle-coating surfaces was theoretically analyzed by a mechanistic model which considered free convection, transient conduction and microlayer evaporation. The heat transfer can be predicted by the model, especially at low-to-moderate heat fluxes. Additionally, referring to the bubble visualization at critical heat fluxes, possible mechanisms to trigger critical heat fluxes were discussed. Afterwards, a critical heat flux model originating from the Zuber hydrodynamic instability model, was employed to predict the experimental results, showing a good prediction ability.</p>},
  articleno    = {106107},
  author       = {Cao, Zhen and Wu, Zan and Pham, Anh Duc and Sundén, Bengt},
  issn         = {1290-0729},
  keyword      = {Bubble dynamics,Critical heat flux,Nanoparticle,Pool boiling},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {International Journal of Thermal Sciences},
  title        = {Electrophoretic deposition surfaces to enhance HFE-7200 pool boiling heat transfer and critical heat flux},
  url          = {http://dx.doi.org/10.1016/j.ijthermalsci.2019.106107},
  volume       = {146},
  year         = {2019},
}