Degraded boiling heat transfer from hotwire in ferrofluid due to particle deposition
Article
Article Title | Degraded boiling heat transfer from hotwire in ferrofluid due to particle deposition |
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ERA Journal ID | 3658 |
Article Category | Article |
Authors | Vatani, Ashkan (Author), Woodfield, Peter Lloyd (Author), Dinh, Toan (Author), Phan, Hoang-Phuong (Author), Nguyen, Nam-Trung (Author) and Dao, Dzung (Author) |
Journal Title | Applied Thermal Engineering |
Journal Citation | 142, pp. 255-261 |
Number of Pages | 7 |
Year | 2018 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 1359-4311 |
1873-5606 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.applthermaleng.2018.06.064 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S1359431117369004 |
Abstract | Transient boiling heat transfer from an electrically-heated microwire in Fe3O4/water nanofluid (ferrofluid) was investigated for the first time. The transient temperature rise of the wire for different electrical currents was measured and compared with results for deionized water to highlight the effect of the magnetic particles on the heat transfer. It was observed that below the normal boiling point of water, the ferrofluid enhances the heat transfer. However, above the boiling point, the heat transfer ability of the ferrofluid significantly decays due to deposition of particles on wire. Scanning electron microscope (SEM) images of the wire showed that the ferromagnetic particles form a coating layer on the wire of various morphologies depending on electric current and duration of heating. Parameters affecting both heat transfer and particle deposition such as current, time and concentration of ferrofluid were investigated. It was observed that the rate of particle deposition on wire and the thickness of the coating layer increases by increasing current, time and concentration of ferrofluid. |
Keywords | Boiling heat transfer; Ferrofluid; Particle deposition; Magnetic field; Transient hot-wire |
ANZSRC Field of Research 2020 | 401705. Microelectromechanical systems (MEMS) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Griffith University |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5q1y/degraded-boiling-heat-transfer-from-hotwire-in-ferrofluid-due-to-particle-deposition
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