Fischer, S. ; Slomski, E. M. ; Stephan, P. ; Oechsner, M. (2024)
Enhancement of nucleate boiling heat transfer by micro-structured chromium nitride surfaces.
In: Journal of Physics: Conference Series, 2012, 395 (1)
doi: 10.26083/tuprints-00020792
Article, Secondary publication, Publisher's Version
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| Item Type: | Article |
|---|---|
| Type of entry: | Secondary publication |
| Title: | Enhancement of nucleate boiling heat transfer by micro-structured chromium nitride surfaces |
| Language: | English |
| Date: | 6 February 2024 |
| Place of Publication: | Darmstadt |
| Year of primary publication: | 2012 |
| Place of primary publication: | Bristol |
| Publisher: | IOP Publishing |
| Journal or Publication Title: | Journal of Physics: Conference Series |
| Volume of the journal: | 395 |
| Issue Number: | 1 |
| Collation: | 8 Seiten |
| DOI: | 10.26083/tuprints-00020792 |
| Corresponding Links: | |
| Origin: | Secondary publication DeepGreen |
| Abstract: | In the present work, the influence of micro-structured chromium nitride (CrN) surfaces on boiling heat transfer during nucleate boiling of FC-72 at saturation temperature was investigated. The CrN thin coatings of 4.5 μm thickness in average were deposited by Physical Vapor Deposition (PVD) as a combination of High Power Impulse Magnetron Sputtering (HiPIMS) and Direct Current Magnetron Sputtering (DCMS) on polished copper surfaces. Due to variation of the applied bias voltage to the substrates different sizes and orientations of the CrN crystals were realized. The typical dimensions of the hereby generated surface structures are in the order of a few hundred nm to a few μm. It was found that all employed micro-structured CrN surfaces yield an increase of the critical heat flux (CHF) compared to an uncoated reference surface. The maximum ratio of the CHF of a CrN structured surface to the CHF of the uncoated copper surface reached within this study was CHFmax/CHFref = 2.5. |
| Identification Number: | Artikel-ID: 012128 |
| Status: | Publisher's Version |
| URN: | urn:nbn:de:tuda-tuprints-207929 |
| Additional Information: | 6th European Thermal Sciences Conference (Eurotherm 2012) 4–7 September 2012, Poitiers, France |
| Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering 600 Technology, medicine, applied sciences > 660 Chemical engineering |
| Divisions: | 16 Department of Mechanical Engineering > Center for Engineering Materials, State Materials Testing Institute Darmstadt (MPA) Chair and Institute for Materials Technology (IfW) 16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD) Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI) |
| Date Deposited: | 06 Feb 2024 10:32 |
| Last Modified: | 06 Feb 2024 10:32 |
| SWORD Depositor: | Deep Green |
| URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/20792 |
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