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

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title = "Electrophoretic deposition surfaces to enhance HFE-7200 pool boiling heat transfer and critical heat flux",
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 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.",
keywords = "Bubble dynamics, Critical heat flux, Nanoparticle, Pool boiling",
author = "Zhen Cao and Zan Wu and Pham, {Anh Duc} and Bengt Sund{\'e}n",
year = "2019",
doi = "10.1016/j.ijthermalsci.2019.106107",
language = "English",
volume = "146",
journal = "Revue Generale de Thermique",
issn = "1290-0729",
publisher = "Elsevier",