| Issue |
EPJ Web Conf.
Volume 358, 2026
EFM25 – Energy & Fluid Mechanics 2025
|
|
|---|---|---|
| Article Number | 01003 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/epjconf/202635801003 | |
| Published online | 12 March 2026 | |
https://doi.org/10.1051/epjconf/202635801003
Determination of bubble diameters during pool boiling on surfaces with minichannels partially filled with porous elements
1 Kielce University of Technology, al. Tysiaclecia Panstwa Polskiego 7, PL-25-314 Kielce, Poland
2 Central Office of Measures, ul. Elektoralna 2, 00-139 Warsaw, Poland
3 Teplárna Liberec, a.s.. Dr. Milady Horákové 641/34a 460 01 Liberec, Czech Republic
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 12 March 2026
Abstract
This article presents experimental studies conducted on enhanced surfaces in the form of minichannels partially filled with porous structures. The experiments were carried out during pool boiling of water for five different surfaces. For the tested samples as well as for the reference surfaces: minichannels without additional porous fillings (MC) and a plain surface, the heat flux and heat transfer coefficient were determined. All samples with additional fillings achieved higher heat fluxes and heat transfer coefficients with lower superheating compared to the MC and flat surface samples. Visualization of the boiling process was performed, enabling the measurement of the bubble diameters at the moment of detachment. Based on modified correlations from the literature, the diameters of the departure bubbles were determined and compared with the experimental data.
© The Authors, published by EDP Sciences, 2026
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