| Issue |
E3S Web Conf.
Volume 70, 2018
17th International Conference Heat Transfer and Renewable Sources of Energy (HTRSE-2018)
|
|
|---|---|---|
| Article Number | 02008 | |
| Number of page(s) | 6 | |
| Section | Heat Transfer and Heat Exchangers | |
| DOI | https://doi.org/10.1051/e3sconf/20187002008 | |
| Published online | 03 December 2018 | |
Bubble departure diameter determination for pool boiling on surface with microchannels
Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, al. 1000-lecia Państwa Polskiego 7, PL-25-314 Kielce, Poland
* Corresponding author: tmprp@tu.kielce.pl
The paper presents visualization investigations into pool boiling heat transfer for open microchannel surfaces. The experiments were carried out with saturated water, ethanol, FC-72 and Novec-649 at atmospheric pressure. Parallel microchannels fabricated by machining copper sample were about 0.2 to 0.5 mm wide and 0.2 to 0.5 mm deep. The diameter of departing bubble was calculated for the microchannel surface on the basis of buoyancy force and surface tension force balance. The visualization carried out was aimed at determining the diameters of the departing bubbles at various heat fluxes for four working fluids.
© The Authors, published by EDP Sciences, 2018
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