Pool boiling of HFE-7200 on nanoparticle-coating surfaces: Experiments and heat transfer analysis
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/a04df5e7-8d85-4c9f-a62c-2b9a19d35225
- author
- 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
- organization
- publishing date
- 2018-12-21
- 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 Press Ltd.
- 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
- 2023-11-18 08:59:04
@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}}, keywords = {{Pool boiling; Heat transfer; Nanoparticles; Bubble dynamics}}, language = {{eng}}, month = {{12}}, pages = {{548--560}}, publisher = {{Pergamon Press Ltd.}}, 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}}, doi = {{10.1016/j.ijheatmasstransfer.2018.12.140}}, volume = {{133}}, year = {{2018}}, }