Boiling heat transfer characteristics of confined jet impingement on metal foam with different structures.
In: Applied Thermal Engineering, Jg. 251 (2024-08-15), S. N.PAG
academicJournal
Zugriff:
• New data of jet impingement boiling on metal foam covers were obtained. • Effect of metal foam structural parameters on heat transfer was analyzed. • Pore density has the most significant effect on boiling heat transfer. • New correlations considering various metal foam structures were developed. Metal foam has great potential for improving jet impingement boiling heat transfer, and the effect mechanism of metal foam structures is unclear. In this study, the boiling heat transfer characteristics of confined jet impingement on metal foam covered surfaces with different structures were experimentally investigated, and the effects of pore density, porosity, and thickness were analyzed. The results show that, as the pore density varies from 20 PPI to 40 PPI, the heat transfer coefficient increases and then decreases, while the critical heat flux continues to decrease; compared with the metal foam cover with a pore density of 40 PPI, the 20 PPI one has a 17.1 % higher critical heat flux, and the 25 PPI one has a 27.5 % greater maximum heat transfer coefficient; as the porosity decreases from 97 % to 92 %, both the critical heat flux and maximum heat transfer coefficient rise by approximately 10 %; as the thickness increases from 3.0 mm to 5.0 mm, the critical heat flux for 20 PPI rises by 12.0 %, but it declines by 21.2 % for 40 PPI. New correlations for the heat transfer coefficient and critical heat flux of the jet impingement boiling were developed with average deviations of 6.8–8.9 %. [ABSTRACT FROM AUTHOR]
Titel: |
Boiling heat transfer characteristics of confined jet impingement on metal foam with different structures.
|
---|---|
Autor/in / Beteiligte Person: | Hui, Yao ; Li, Xuan ; Lei, Rui ; Hu, Haitao ; Huang, Yonghua |
Zeitschrift: | Applied Thermal Engineering, Jg. 251 (2024-08-15), S. N.PAG |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1359-4311 (print) |
DOI: | 10.1016/j.applthermaleng.2024.123554 |
Schlagwort: |
|
Sonstiges: |
|